From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 16 Apr 2005 15:20:36 -0700 Subject: Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! --- arch/h8300/kernel/Makefile | 11 + arch/h8300/kernel/asm-offsets.c | 65 +++++ arch/h8300/kernel/gpio.c | 174 +++++++++++++ arch/h8300/kernel/h8300_ksyms.c | 112 ++++++++ arch/h8300/kernel/init_task.c | 43 ++++ arch/h8300/kernel/ints.c | 255 +++++++++++++++++++ arch/h8300/kernel/module.c | 122 +++++++++ arch/h8300/kernel/process.c | 288 +++++++++++++++++++++ arch/h8300/kernel/ptrace.c | 277 ++++++++++++++++++++ arch/h8300/kernel/semaphore.c | 133 ++++++++++ arch/h8300/kernel/setup.c | 248 ++++++++++++++++++ arch/h8300/kernel/signal.c | 552 ++++++++++++++++++++++++++++++++++++++++ arch/h8300/kernel/sys_h8300.c | 282 ++++++++++++++++++++ arch/h8300/kernel/syscalls.S | 340 +++++++++++++++++++++++++ arch/h8300/kernel/time.c | 134 ++++++++++ arch/h8300/kernel/traps.c | 169 ++++++++++++ arch/h8300/kernel/vmlinux.lds.S | 172 +++++++++++++ 17 files changed, 3377 insertions(+) create mode 100644 arch/h8300/kernel/Makefile create mode 100644 arch/h8300/kernel/asm-offsets.c create mode 100644 arch/h8300/kernel/gpio.c create mode 100644 arch/h8300/kernel/h8300_ksyms.c create mode 100644 arch/h8300/kernel/init_task.c create mode 100644 arch/h8300/kernel/ints.c create mode 100644 arch/h8300/kernel/module.c create mode 100644 arch/h8300/kernel/process.c create mode 100644 arch/h8300/kernel/ptrace.c create mode 100644 arch/h8300/kernel/semaphore.c create mode 100644 arch/h8300/kernel/setup.c create mode 100644 arch/h8300/kernel/signal.c create mode 100644 arch/h8300/kernel/sys_h8300.c create mode 100644 arch/h8300/kernel/syscalls.S create mode 100644 arch/h8300/kernel/time.c create mode 100644 arch/h8300/kernel/traps.c create mode 100644 arch/h8300/kernel/vmlinux.lds.S (limited to 'arch/h8300/kernel') diff --git a/arch/h8300/kernel/Makefile b/arch/h8300/kernel/Makefile new file mode 100644 index 00000000000..71b6131e98b --- /dev/null +++ b/arch/h8300/kernel/Makefile @@ -0,0 +1,11 @@ +# +# Makefile for the linux kernel. +# + +extra-y := vmlinux.lds + +obj-y := process.o traps.o ptrace.o ints.o \ + sys_h8300.o time.o semaphore.o signal.o \ + setup.o gpio.o init_task.o syscalls.o + +obj-$(CONFIG_MODULES) += module.o h8300_ksyms.o diff --git a/arch/h8300/kernel/asm-offsets.c b/arch/h8300/kernel/asm-offsets.c new file mode 100644 index 00000000000..b78b82ad28a --- /dev/null +++ b/arch/h8300/kernel/asm-offsets.c @@ -0,0 +1,65 @@ +/* + * This program is used to generate definitions needed by + * assembly language modules. + * + * We use the technique used in the OSF Mach kernel code: + * generate asm statements containing #defines, + * compile this file to assembler, and then extract the + * #defines from the assembly-language output. + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +#define DEFINE(sym, val) \ + asm volatile("\n->" #sym " %0 " #val : : "i" (val)) + +#define BLANK() asm volatile("\n->" : : ) + +int main(void) +{ + /* offsets into the task struct */ + DEFINE(TASK_STATE, offsetof(struct task_struct, state)); + DEFINE(TASK_FLAGS, offsetof(struct task_struct, flags)); + DEFINE(TASK_PTRACE, offsetof(struct task_struct, ptrace)); + DEFINE(TASK_BLOCKED, offsetof(struct task_struct, blocked)); + DEFINE(TASK_THREAD, offsetof(struct task_struct, thread)); + DEFINE(TASK_THREAD_INFO, offsetof(struct task_struct, thread_info)); + DEFINE(TASK_MM, offsetof(struct task_struct, mm)); + DEFINE(TASK_ACTIVE_MM, offsetof(struct task_struct, active_mm)); + + /* offsets into the irq_cpustat_t struct */ + DEFINE(CPUSTAT_SOFTIRQ_PENDING, offsetof(irq_cpustat_t, __softirq_pending)); + + /* offsets into the thread struct */ + DEFINE(THREAD_KSP, offsetof(struct thread_struct, ksp)); + DEFINE(THREAD_USP, offsetof(struct thread_struct, usp)); + DEFINE(THREAD_CCR, offsetof(struct thread_struct, ccr)); + + /* offsets into the pt_regs struct */ + DEFINE(LER0, offsetof(struct pt_regs, er0) - sizeof(long)); + DEFINE(LER1, offsetof(struct pt_regs, er1) - sizeof(long)); + DEFINE(LER2, offsetof(struct pt_regs, er2) - sizeof(long)); + DEFINE(LER3, offsetof(struct pt_regs, er3) - sizeof(long)); + DEFINE(LER4, offsetof(struct pt_regs, er4) - sizeof(long)); + DEFINE(LER5, offsetof(struct pt_regs, er5) - sizeof(long)); + DEFINE(LER6, offsetof(struct pt_regs, er6) - sizeof(long)); + DEFINE(LORIG, offsetof(struct pt_regs, orig_er0) - sizeof(long)); + DEFINE(LCCR, offsetof(struct pt_regs, ccr) - sizeof(long)); + DEFINE(LVEC, offsetof(struct pt_regs, vector) - sizeof(long)); +#if defined(__H8300S__) + DEFINE(LEXR, offsetof(struct pt_regs, exr) - sizeof(long)); +#endif + DEFINE(LRET, offsetof(struct pt_regs, pc) - sizeof(long)); + + DEFINE(PT_PTRACED, PT_PTRACED); + DEFINE(PT_DTRACE, PT_DTRACE); + + return 0; +} diff --git a/arch/h8300/kernel/gpio.c b/arch/h8300/kernel/gpio.c new file mode 100644 index 00000000000..795682b873e --- /dev/null +++ b/arch/h8300/kernel/gpio.c @@ -0,0 +1,174 @@ +/* + * linux/arch/h8300/kernel/gpio.c + * + * Yoshinori Sato + * + */ + +/* + * Internal I/O Port Management + */ + +#include +#include +#include +#include +#include +#include +#include + +#define _(addr) (volatile unsigned char *)(addr) +#if defined(CONFIG_H83007) || defined(CONFIG_H83068) +#include +static volatile unsigned char *ddrs[] = { + _(P1DDR),_(P2DDR),_(P3DDR),_(P4DDR),_(P5DDR),_(P6DDR), + NULL, _(P8DDR),_(P9DDR),_(PADDR),_(PBDDR), +}; +#define MAX_PORT 11 +#endif + + #if defined(CONFIG_H83002) || defined(CONFIG_H8048) +/* Fix me!! */ +#include +static volatile unsigned char *ddrs[] = { + _(P1DDR),_(P2DDR),_(P3DDR),_(P4DDR),_(P5DDR),_(P6DDR), + NULL, _(P8DDR),_(P9DDR),_(PADDR),_(PBDDR), +}; +#define MAX_PORT 11 +#endif + +#if defined(CONFIG_H8S2678) +#include +static volatile unsigned char *ddrs[] = { + _(P1DDR),_(P2DDR),_(P3DDR),NULL ,_(P5DDR),_(P6DDR), + _(P7DDR),_(P8DDR),NULL, _(PADDR),_(PBDDR),_(PCDDR), + _(PDDDR),_(PEDDR),_(PFDDR),_(PGDDR),_(PHDDR), + _(PADDR),_(PBDDR),_(PCDDR),_(PDDDR),_(PEDDR),_(PFDDR), + _(PGDDR),_(PHDDR) +}; +#define MAX_PORT 17 +#endif +#undef _ + +#if !defined(P1DDR) +#error Unsuppoted CPU Selection +#endif + +static struct { + unsigned char used; + unsigned char ddr; +} gpio_regs[MAX_PORT]; + +extern char *_platform_gpio_table(int length); + +int h8300_reserved_gpio(int port, unsigned int bits) +{ + unsigned char *used; + + if (port < 0 || port >= MAX_PORT) + return -1; + used = &(gpio_regs[port].used); + if ((*used & bits) != 0) + return 0; + *used |= bits; + return 1; +} + +int h8300_free_gpio(int port, unsigned int bits) +{ + unsigned char *used; + + if (port < 0 || port >= MAX_PORT) + return -1; + used = &(gpio_regs[port].used); + if ((*used & bits) != bits) + return 0; + *used &= (~bits); + return 1; +} + +int h8300_set_gpio_dir(int port_bit,int dir) +{ + int port = (port_bit >> 8) & 0xff; + int bit = port_bit & 0xff; + + if (ddrs[port] == NULL) + return 0; + if (gpio_regs[port].used & bit) { + if (dir) + gpio_regs[port].ddr |= bit; + else + gpio_regs[port].ddr &= ~bit; + *ddrs[port] = gpio_regs[port].ddr; + return 1; + } else + return 0; +} + +int h8300_get_gpio_dir(int port_bit) +{ + int port = (port_bit >> 8) & 0xff; + int bit = port_bit & 0xff; + + if (ddrs[port] == NULL) + return 0; + if (gpio_regs[port].used & bit) { + return (gpio_regs[port].ddr & bit) != 0; + } else + return -1; +} + +#if defined(CONFIG_PROC_FS) +static char *port_status(int portno) +{ + static char result[10]; + const static char io[2]={'I','O'}; + char *rp; + int c; + unsigned char used,ddr; + + used = gpio_regs[portno].used; + ddr = gpio_regs[portno].ddr; + result[8]='\0'; + rp = result + 7; + for (c = 8; c > 0; c--,rp--,used >>= 1, ddr >>= 1) + if (used & 0x01) + *rp = io[ ddr & 0x01]; + else + *rp = '-'; + return result; +} + +static int gpio_proc_read(char *buf, char **start, off_t offset, + int len, int *unused_i, void *unused_v) +{ + int c,outlen; + const static char port_name[]="123456789ABCDEFGH"; + outlen = 0; + for (c = 0; c < MAX_PORT; c++) { + if (ddrs[c] == NULL) + continue ; + len = sprintf(buf,"P%c: %s\n",port_name[c],port_status(c)); + buf += len; + outlen += len; + } + return outlen; +} + +static __init int register_proc(void) +{ + struct proc_dir_entry *proc_gpio; + + proc_gpio = create_proc_entry("gpio", S_IRUGO, NULL); + if (proc_gpio) + proc_gpio->read_proc = gpio_proc_read; + return proc_gpio != NULL; +} + +__initcall(register_proc); +#endif + +void __init h8300_gpio_init(void) +{ + memcpy(gpio_regs,_platform_gpio_table(sizeof(gpio_regs)),sizeof(gpio_regs)); +} diff --git a/arch/h8300/kernel/h8300_ksyms.c b/arch/h8300/kernel/h8300_ksyms.c new file mode 100644 index 00000000000..5a630233112 --- /dev/null +++ b/arch/h8300/kernel/h8300_ksyms.c @@ -0,0 +1,112 @@ +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include +#include +#include +#include + +//asmlinkage long long __ashrdi3 (long long, int); +//asmlinkage long long __lshrdi3 (long long, int); +extern char h8300_debug_device[]; + +extern void dump_thread(struct pt_regs *, struct user *); + +/* platform dependent support */ + +EXPORT_SYMBOL(dump_thread); +EXPORT_SYMBOL(strnlen); +EXPORT_SYMBOL(strrchr); +EXPORT_SYMBOL(strstr); +EXPORT_SYMBOL(strchr); +EXPORT_SYMBOL(strcat); +EXPORT_SYMBOL(strlen); +EXPORT_SYMBOL(strcmp); +EXPORT_SYMBOL(strncmp); + +EXPORT_SYMBOL(ip_fast_csum); + +EXPORT_SYMBOL(kernel_thread); +EXPORT_SYMBOL(enable_irq); +EXPORT_SYMBOL(disable_irq); + +/* Networking helper routines. */ +EXPORT_SYMBOL(csum_partial_copy); + +/* The following are special because they're not called + explicitly (the C compiler generates them). Fortunately, + their interface isn't gonna change any time soon now, so + it's OK to leave it out of version control. */ +//EXPORT_SYMBOL(__ashrdi3); +//EXPORT_SYMBOL(__lshrdi3); +EXPORT_SYMBOL(memcpy); +EXPORT_SYMBOL(memset); +EXPORT_SYMBOL(memcmp); +EXPORT_SYMBOL(memscan); +EXPORT_SYMBOL(memmove); + +EXPORT_SYMBOL(get_wchan); + +/* + * libgcc functions - functions that are used internally by the + * compiler... (prototypes are not correct though, but that + * doesn't really matter since they're not versioned). + */ +extern void __gcc_bcmp(void); +extern void __ashldi3(void); +extern void __ashrdi3(void); +extern void __cmpdi2(void); +extern void __divdi3(void); +extern void __divsi3(void); +extern void __lshrdi3(void); +extern void __moddi3(void); +extern void __modsi3(void); +extern void __muldi3(void); +extern void __mulsi3(void); +extern void __negdi2(void); +extern void __ucmpdi2(void); +extern void __udivdi3(void); +extern void __udivmoddi4(void); +extern void __udivsi3(void); +extern void __umoddi3(void); +extern void __umodsi3(void); + + /* gcc lib functions */ +EXPORT_SYMBOL(__gcc_bcmp); +EXPORT_SYMBOL(__ashldi3); +EXPORT_SYMBOL(__ashrdi3); +EXPORT_SYMBOL(__cmpdi2); +EXPORT_SYMBOL(__divdi3); +EXPORT_SYMBOL(__divsi3); +EXPORT_SYMBOL(__lshrdi3); +EXPORT_SYMBOL(__moddi3); +EXPORT_SYMBOL(__modsi3); +EXPORT_SYMBOL(__muldi3); +EXPORT_SYMBOL(__mulsi3); +EXPORT_SYMBOL(__negdi2); +EXPORT_SYMBOL(__ucmpdi2); +EXPORT_SYMBOL(__udivdi3); +EXPORT_SYMBOL(__udivmoddi4); +EXPORT_SYMBOL(__udivsi3); +EXPORT_SYMBOL(__umoddi3); +EXPORT_SYMBOL(__umodsi3); + +#ifdef MAGIC_ROM_PTR +EXPORT_SYMBOL(is_in_rom); +#endif + +EXPORT_SYMBOL(h8300_reserved_gpio); +EXPORT_SYMBOL(h8300_free_gpio); +EXPORT_SYMBOL(h8300_set_gpio_dir); diff --git a/arch/h8300/kernel/init_task.c b/arch/h8300/kernel/init_task.c new file mode 100644 index 00000000000..19272c2ac56 --- /dev/null +++ b/arch/h8300/kernel/init_task.c @@ -0,0 +1,43 @@ +/* + * linux/arch/h8300/kernel/init_task.c + */ +#include +#include +#include +#include +#include +#include +#include + +#include +#include + +static struct fs_struct init_fs = INIT_FS; +static struct files_struct init_files = INIT_FILES; +static struct signal_struct init_signals = INIT_SIGNALS(init_signals); +static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand); +struct mm_struct init_mm = INIT_MM(init_mm); + +EXPORT_SYMBOL(init_mm); + +/* + * Initial task structure. + * + * All other task structs will be allocated on slabs in fork.c + */ +__asm__(".align 4"); +struct task_struct init_task = INIT_TASK(init_task); + +EXPORT_SYMBOL(init_task); + +/* + * Initial thread structure. + * + * We need to make sure that this is 8192-byte aligned due to the + * way process stacks are handled. This is done by having a special + * "init_task" linker map entry.. + */ +union thread_union init_thread_union + __attribute__((__section__(".data.init_task"))) = + { INIT_THREAD_INFO(init_task) }; + diff --git a/arch/h8300/kernel/ints.c b/arch/h8300/kernel/ints.c new file mode 100644 index 00000000000..edb3c417001 --- /dev/null +++ b/arch/h8300/kernel/ints.c @@ -0,0 +1,255 @@ +/* + * linux/arch/h8300/platform/h8300h/ints.c + * + * Yoshinori Sato + * + * Based on linux/arch/$(ARCH)/platform/$(PLATFORM)/ints.c + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file COPYING in the main directory of this archive + * for more details. + * + * Copyright 1996 Roman Zippel + * Copyright 1999 D. Jeff Dionne + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include +#include + +/* + * This structure has only 4 elements for speed reasons + */ +typedef struct irq_handler { + irqreturn_t (*handler)(int, void *, struct pt_regs *); + int flags; + int count; + void *dev_id; + const char *devname; +} irq_handler_t; + +static irq_handler_t *irq_list[NR_IRQS]; +static int use_kmalloc; + +extern unsigned long *interrupt_redirect_table; +extern const int h8300_saved_vectors[]; +extern const unsigned long h8300_trap_table[]; +int h8300_enable_irq_pin(unsigned int irq); +void h8300_disable_irq_pin(unsigned int irq); + +#define CPU_VECTOR ((unsigned long *)0x000000) +#define ADDR_MASK (0xffffff) + +#if defined(CONFIG_RAMKERNEL) +static unsigned long __init *get_vector_address(void) +{ + unsigned long *rom_vector = CPU_VECTOR; + unsigned long base,tmp; + int vec_no; + + base = rom_vector[EXT_IRQ0] & ADDR_MASK; + + /* check romvector format */ + for (vec_no = EXT_IRQ1; vec_no <= EXT_IRQ0+EXT_IRQS; vec_no++) { + if ((base+(vec_no - EXT_IRQ0)*4) != (rom_vector[vec_no] & ADDR_MASK)) + return NULL; + } + + /* ramvector base address */ + base -= EXT_IRQ0*4; + + /* writerble check */ + tmp = ~(*(volatile unsigned long *)base); + (*(volatile unsigned long *)base) = tmp; + if ((*(volatile unsigned long *)base) != tmp) + return NULL; + return (unsigned long *)base; +} +#endif + +void __init init_IRQ(void) +{ +#if defined(CONFIG_RAMKERNEL) + int i; + unsigned long *ramvec,*ramvec_p; + const unsigned long *trap_entry; + const int *saved_vector; + + ramvec = get_vector_address(); + if (ramvec == NULL) + panic("interrupt vector serup failed."); + else + printk(KERN_INFO "virtual vector at 0x%08lx\n",(unsigned long)ramvec); + + /* create redirect table */ + ramvec_p = ramvec; + trap_entry = h8300_trap_table; + saved_vector = h8300_saved_vectors; + for ( i = 0; i < NR_IRQS; i++) { + if (i == *saved_vector) { + ramvec_p++; + saved_vector++; + } else { + if ( i < NR_TRAPS ) { + if (*trap_entry) + *ramvec_p = VECTOR(*trap_entry); + ramvec_p++; + trap_entry++; + } else + *ramvec_p++ = REDIRECT(interrupt_entry); + } + } + interrupt_redirect_table = ramvec; +#ifdef DUMP_VECTOR + ramvec_p = ramvec; + for (i = 0; i < NR_IRQS; i++) { + if ((i % 8) == 0) + printk(KERN_DEBUG "\n%p: ",ramvec_p); + printk(KERN_DEBUG "%p ",*ramvec_p); + ramvec_p++; + } + printk(KERN_DEBUG "\n"); +#endif +#endif +} + +int request_irq(unsigned int irq, + irqreturn_t (*handler)(int, void *, struct pt_regs *), + unsigned long flags, const char *devname, void *dev_id) +{ + irq_handler_t *irq_handle; + if (irq < 0 || irq >= NR_IRQS) { + printk(KERN_ERR "Incorrect IRQ %d from %s\n", irq, devname); + return -EINVAL; + } + + if (irq_list[irq] || (h8300_enable_irq_pin(irq) == -EBUSY)) + return -EBUSY; + + if (use_kmalloc) + irq_handle = (irq_handler_t *)kmalloc(sizeof(irq_handler_t), GFP_ATOMIC); + else { + /* use bootmem allocater */ + irq_handle = (irq_handler_t *)alloc_bootmem(sizeof(irq_handler_t)); + irq_handle = (irq_handler_t *)((unsigned long)irq_handle | 0x80000000); + } + + if (irq_handle == NULL) + return -ENOMEM; + + irq_handle->handler = handler; + irq_handle->flags = flags; + irq_handle->count = 0; + irq_handle->dev_id = dev_id; + irq_handle->devname = devname; + irq_list[irq] = irq_handle; + + if (irq_handle->flags & SA_SAMPLE_RANDOM) + rand_initialize_irq(irq); + + enable_irq(irq); + return 0; +} + +EXPORT_SYMBOL(request_irq); + +void free_irq(unsigned int irq, void *dev_id) +{ + if (irq >= NR_IRQS) + return; + + if (!irq_list[irq] || irq_list[irq]->dev_id != dev_id) + printk(KERN_WARNING "Removing probably wrong IRQ %d from %s\n", + irq, irq_list[irq]->devname); + disable_irq(irq); + h8300_disable_irq_pin(irq); + if (((unsigned long)irq_list[irq] & 0x80000000) == 0) { + kfree(irq_list[irq]); + irq_list[irq] = NULL; + } +} + +EXPORT_SYMBOL(free_irq); + +/* + * Do we need these probe functions on the m68k? + */ +unsigned long probe_irq_on (void) +{ + return 0; +} + +EXPORT_SYMBOL(probe_irq_on); + +int probe_irq_off (unsigned long irqs) +{ + return 0; +} + +EXPORT_SYMBOL(probe_irq_off); + +void enable_irq(unsigned int irq) +{ + if (irq >= EXT_IRQ0 && irq <= (EXT_IRQ0 + EXT_IRQS)) + IER_REGS |= 1 << (irq - EXT_IRQ0); +} + +void disable_irq(unsigned int irq) +{ + if (irq >= EXT_IRQ0 && irq <= (EXT_IRQ0 + EXT_IRQS)) + IER_REGS &= ~(1 << (irq - EXT_IRQ0)); +} + +asmlinkage void process_int(int irq, struct pt_regs *fp) +{ + irq_enter(); + h8300_clear_isr(irq); + if (irq >= NR_TRAPS && irq < NR_IRQS) { + if (irq_list[irq]) { + irq_list[irq]->handler(irq, irq_list[irq]->dev_id, fp); + irq_list[irq]->count++; + if (irq_list[irq]->flags & SA_SAMPLE_RANDOM) + add_interrupt_randomness(irq); + } + } else { + BUG(); + } + irq_exit(); +} + +int show_interrupts(struct seq_file *p, void *v) +{ + int i = *(loff_t *) v; + + if ((i < NR_IRQS) && (irq_list[i]!=NULL)) { + seq_printf(p, "%3d: %10u ",i,irq_list[i]->count); + seq_printf(p, "%s\n", irq_list[i]->devname); + } + + return 0; +} + +void init_irq_proc(void) +{ +} + +static int __init enable_kmalloc(void) +{ + use_kmalloc = 1; + return 0; +} +core_initcall(enable_kmalloc); diff --git a/arch/h8300/kernel/module.c b/arch/h8300/kernel/module.c new file mode 100644 index 00000000000..4fd7138a6e0 --- /dev/null +++ b/arch/h8300/kernel/module.c @@ -0,0 +1,122 @@ +#include +#include +#include +#include +#include +#include + +#if 0 +#define DEBUGP printk +#else +#define DEBUGP(fmt...) +#endif + +void *module_alloc(unsigned long size) +{ + if (size == 0) + return NULL; + return vmalloc(size); +} + + +/* Free memory returned from module_alloc */ +void module_free(struct module *mod, void *module_region) +{ + vfree(module_region); + /* FIXME: If module_region == mod->init_region, trim exception + table entries. */ +} + +/* We don't need anything special. */ +int module_frob_arch_sections(Elf_Ehdr *hdr, + Elf_Shdr *sechdrs, + char *secstrings, + struct module *mod) +{ + return 0; +} + +int apply_relocate(Elf32_Shdr *sechdrs, + const char *strtab, + unsigned int symindex, + unsigned int relsec, + struct module *me) +{ + printk(KERN_ERR "module %s: RELOCATION unsupported\n", + me->name); + return -ENOEXEC; +} + +int apply_relocate_add(Elf32_Shdr *sechdrs, + const char *strtab, + unsigned int symindex, + unsigned int relsec, + struct module *me) +{ + unsigned int i; + Elf32_Rela *rela = (void *)sechdrs[relsec].sh_addr; + + DEBUGP("Applying relocate section %u to %u\n", relsec, + sechdrs[relsec].sh_info); + for (i = 0; i < sechdrs[relsec].sh_size / sizeof(*rela); i++) { + /* This is where to make the change */ + uint32_t *loc = (uint32_t *)(sechdrs[sechdrs[relsec].sh_info].sh_addr + + rela[i].r_offset); + /* This is the symbol it is referring to. Note that all + undefined symbols have been resolved. */ + Elf32_Sym *sym = (Elf32_Sym *)sechdrs[symindex].sh_addr + + ELF32_R_SYM(rela[i].r_info); + uint32_t v = sym->st_value + rela[i].r_addend; + + switch (ELF32_R_TYPE(rela[i].r_info)) { + case R_H8_DIR24R8: + loc = (uint32_t *)((uint32_t)loc - 1); + *loc = (*loc & 0xff000000) | ((*loc & 0xffffff) + v); + break; + case R_H8_DIR24A8: + if (ELF32_R_SYM(rela[i].r_info)) + *loc += v; + break; + case R_H8_DIR32: + case R_H8_DIR32A16: + *loc += v; + break; + case R_H8_PCREL16: + v -= (unsigned long)loc + 2; + if ((Elf32_Sword)v > 0x7fff || + (Elf32_Sword)v < -(Elf32_Sword)0x8000) + goto overflow; + else + *(unsigned short *)loc = v; + break; + case R_H8_PCREL8: + v -= (unsigned long)loc + 1; + if ((Elf32_Sword)v > 0x7f || + (Elf32_Sword)v < -(Elf32_Sword)0x80) + goto overflow; + else + *(unsigned char *)loc = v; + break; + default: + printk(KERN_ERR "module %s: Unknown relocation: %u\n", + me->name, ELF32_R_TYPE(rela[i].r_info)); + return -ENOEXEC; + } + } + return 0; + overflow: + printk(KERN_ERR "module %s: relocation offset overflow: %08x\n", + me->name, rela[i].r_offset); + return -ENOEXEC; +} + +int module_finalize(const Elf_Ehdr *hdr, + const Elf_Shdr *sechdrs, + struct module *me) +{ + return 0; +} + +void module_arch_cleanup(struct module *mod) +{ +} diff --git a/arch/h8300/kernel/process.c b/arch/h8300/kernel/process.c new file mode 100644 index 00000000000..134aec1c6d1 --- /dev/null +++ b/arch/h8300/kernel/process.c @@ -0,0 +1,288 @@ +/* + * linux/arch/h8300/kernel/process.c + * + * Yoshinori Sato + * + * Based on: + * + * linux/arch/m68knommu/kernel/process.c + * + * Copyright (C) 1998 D. Jeff Dionne , + * Kenneth Albanowski , + * The Silver Hammer Group, Ltd. + * + * linux/arch/m68k/kernel/process.c + * + * Copyright (C) 1995 Hamish Macdonald + * + * 68060 fixes by Jesper Skov + */ + +/* + * This file handles the architecture-dependent parts of process handling.. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include + +asmlinkage void ret_from_fork(void); + +/* + * The idle loop on an H8/300.. + */ +#if !defined(CONFIG_H8300H_SIM) && !defined(CONFIG_H8S_SIM) +void default_idle(void) +{ + while(1) { + if (need_resched()) { + local_irq_enable(); + __asm__("sleep"); + local_irq_disable(); + } + schedule(); + } +} +#else +void default_idle(void) +{ + while(1) { + if (need_resched()) + schedule(); + } +} +#endif +void (*idle)(void) = default_idle; + +/* + * The idle thread. There's no useful work to be + * done, so just try to conserve power and have a + * low exit latency (ie sit in a loop waiting for + * somebody to say that they'd like to reschedule) + */ +void cpu_idle(void) +{ + idle(); +} + +void machine_restart(char * __unused) +{ + local_irq_disable(); + __asm__("jmp @@0"); +} + +EXPORT_SYMBOL(machine_restart); + +void machine_halt(void) +{ + local_irq_disable(); + __asm__("sleep"); + for (;;); +} + +EXPORT_SYMBOL(machine_halt); + +void machine_power_off(void) +{ + local_irq_disable(); + __asm__("sleep"); + for (;;); +} + +EXPORT_SYMBOL(machine_power_off); + +void show_regs(struct pt_regs * regs) +{ + printk("\nPC: %08lx Status: %02x", + regs->pc, regs->ccr); + printk("\nORIG_ER0: %08lx ER0: %08lx ER1: %08lx", + regs->orig_er0, regs->er0, regs->er1); + printk("\nER2: %08lx ER3: %08lx ER4: %08lx ER5: %08lx", + regs->er2, regs->er3, regs->er4, regs->er5); + printk("\nER6' %08lx ",regs->er6); + if (user_mode(regs)) + printk("USP: %08lx\n", rdusp()); + else + printk("\n"); +} + +/* + * Create a kernel thread + */ +int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags) +{ + long retval; + long clone_arg; + mm_segment_t fs; + + fs = get_fs(); + set_fs (KERNEL_DS); + clone_arg = flags | CLONE_VM; + __asm__("mov.l sp,er3\n\t" + "sub.l er2,er2\n\t" + "mov.l %2,er1\n\t" + "mov.l %1,er0\n\t" + "trapa #0\n\t" + "cmp.l sp,er3\n\t" + "beq 1f\n\t" + "mov.l %4,er0\n\t" + "mov.l %3,er1\n\t" + "jsr @er1\n\t" + "mov.l %5,er0\n\t" + "trapa #0\n" + "1:\n\t" + "mov.l er0,%0" + :"=r"(retval) + :"i"(__NR_clone),"g"(clone_arg),"g"(fn),"g"(arg),"i"(__NR_exit) + :"er0","er1","er2","er3"); + set_fs (fs); + return retval; +} + +void flush_thread(void) +{ +} + +/* + * "h8300_fork()".. By the time we get here, the + * non-volatile registers have also been saved on the + * stack. We do some ugly pointer stuff here.. (see + * also copy_thread) + */ + +asmlinkage int h8300_fork(struct pt_regs *regs) +{ + return -EINVAL; +} + +asmlinkage int h8300_vfork(struct pt_regs *regs) +{ + return do_fork(CLONE_VFORK | CLONE_VM | SIGCHLD, rdusp(), regs, 0, NULL, NULL); +} + +asmlinkage int h8300_clone(struct pt_regs *regs) +{ + unsigned long clone_flags; + unsigned long newsp; + + /* syscall2 puts clone_flags in er1 and usp in er2 */ + clone_flags = regs->er1; + newsp = regs->er2; + if (!newsp) + newsp = rdusp(); + return do_fork(clone_flags, newsp, regs, 0, NULL, NULL); + +} + +int copy_thread(int nr, unsigned long clone_flags, + unsigned long usp, unsigned long topstk, + struct task_struct * p, struct pt_regs * regs) +{ + struct pt_regs * childregs; + + childregs = ((struct pt_regs *) (THREAD_SIZE + (unsigned long) p->thread_info)) - 1; + + *childregs = *regs; + childregs->retpc = (unsigned long) ret_from_fork; + childregs->er0 = 0; + + p->thread.usp = usp; + p->thread.ksp = (unsigned long)childregs; + + return 0; +} + +/* + * fill in the user structure for a core dump.. + */ +void dump_thread(struct pt_regs * regs, struct user * dump) +{ +/* changed the size calculations - should hopefully work better. lbt */ + dump->magic = CMAGIC; + dump->start_code = 0; + dump->start_stack = rdusp() & ~(PAGE_SIZE - 1); + dump->u_tsize = ((unsigned long) current->mm->end_code) >> PAGE_SHIFT; + dump->u_dsize = ((unsigned long) (current->mm->brk + + (PAGE_SIZE-1))) >> PAGE_SHIFT; + dump->u_dsize -= dump->u_tsize; + dump->u_ssize = 0; + + dump->u_ar0 = (struct user_regs_struct *)(((int)(&dump->regs)) -((int)(dump))); + dump->regs.er0 = regs->er0; + dump->regs.er1 = regs->er1; + dump->regs.er2 = regs->er2; + dump->regs.er3 = regs->er3; + dump->regs.er4 = regs->er4; + dump->regs.er5 = regs->er5; + dump->regs.er6 = regs->er6; + dump->regs.orig_er0 = regs->orig_er0; + dump->regs.ccr = regs->ccr; + dump->regs.pc = regs->pc; +} + +/* + * sys_execve() executes a new program. + */ +asmlinkage int sys_execve(char *name, char **argv, char **envp,int dummy,...) +{ + int error; + char * filename; + struct pt_regs *regs = (struct pt_regs *) ((unsigned char *)&dummy-4); + + lock_kernel(); + filename = getname(name); + error = PTR_ERR(filename); + if (IS_ERR(filename)) + goto out; + error = do_execve(filename, argv, envp, regs); + putname(filename); +out: + unlock_kernel(); + return error; +} + +unsigned long thread_saved_pc(struct task_struct *tsk) +{ + return ((struct pt_regs *)tsk->thread.esp0)->pc; +} + +unsigned long get_wchan(struct task_struct *p) +{ + unsigned long fp, pc; + unsigned long stack_page; + int count = 0; + if (!p || p == current || p->state == TASK_RUNNING) + return 0; + + stack_page = (unsigned long)p; + fp = ((struct pt_regs *)p->thread.ksp)->er6; + do { + if (fp < stack_page+sizeof(struct thread_info) || + fp >= 8184+stack_page) + return 0; + pc = ((unsigned long *)fp)[1]; + if (!in_sched_functions(pc)) + return pc; + fp = *(unsigned long *) fp; + } while (count++ < 16); + return 0; +} diff --git a/arch/h8300/kernel/ptrace.c b/arch/h8300/kernel/ptrace.c new file mode 100644 index 00000000000..5f19d774a28 --- /dev/null +++ b/arch/h8300/kernel/ptrace.c @@ -0,0 +1,277 @@ +/* + * linux/arch/h8300/kernel/ptrace.c + * + * Yoshinori Sato + * + * Based on: + * linux/arch/m68k/kernel/ptrace.c + * + * Copyright (C) 1994 by Hamish Macdonald + * Taken from linux/kernel/ptrace.c and modified for M680x0. + * linux/kernel/ptrace.c is by Ross Biro 1/23/92, edited by Linus Torvalds + * + * This file is subject to the terms and conditions of the GNU General + * Public License. See the file COPYING in the main directory of + * this archive for more details. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include +#include + +/* cpu depend functions */ +extern long h8300_get_reg(struct task_struct *task, int regno); +extern int h8300_put_reg(struct task_struct *task, int regno, unsigned long data); +extern void h8300_disable_trace(struct task_struct *child); +extern void h8300_enable_trace(struct task_struct *child); + +/* + * does not yet catch signals sent when the child dies. + * in exit.c or in signal.c. + */ + +inline +static int read_long(struct task_struct * tsk, unsigned long addr, + unsigned long * result) +{ + *result = *(unsigned long *)addr; + return 0; +} + +void ptrace_disable(struct task_struct *child) +{ + h8300_disable_trace(child); +} + +asmlinkage int sys_ptrace(long request, long pid, long addr, long data) +{ + struct task_struct *child; + int ret; + + lock_kernel(); + ret = -EPERM; + if (request == PTRACE_TRACEME) { + /* are we already being traced? */ + if (current->ptrace & PT_PTRACED) + goto out; + /* set the ptrace bit in the process flags. */ + current->ptrace |= PT_PTRACED; + ret = 0; + goto out; + } + ret = -ESRCH; + read_lock(&tasklist_lock); + child = find_task_by_pid(pid); + if (child) + get_task_struct(child); + read_unlock(&tasklist_lock); + if (!child) + goto out; + + ret = -EPERM; + if (pid == 1) /* you may not mess with init */ + goto out_tsk; + + if (request == PTRACE_ATTACH) { + ret = ptrace_attach(child); + goto out_tsk; + } + ret = ptrace_check_attach(child, request == PTRACE_KILL); + if (ret < 0) + goto out_tsk; + + switch (request) { + case PTRACE_PEEKTEXT: /* read word at location addr. */ + case PTRACE_PEEKDATA: { + unsigned long tmp; + + ret = read_long(child, addr, &tmp); + if (ret < 0) + break ; + ret = put_user(tmp, (unsigned long *) data); + break ; + } + + /* read the word at location addr in the USER area. */ + case PTRACE_PEEKUSR: { + unsigned long tmp = 0; + + if ((addr & 3) || addr < 0 || addr >= sizeof(struct user)) { + ret = -EIO; + break ; + } + + ret = 0; /* Default return condition */ + addr = addr >> 2; /* temporary hack. */ + + if (addr < H8300_REGS_NO) + tmp = h8300_get_reg(child, addr); + else { + switch(addr) { + case 49: + tmp = child->mm->start_code; + break ; + case 50: + tmp = child->mm->start_data; + break ; + case 51: + tmp = child->mm->end_code; + break ; + case 52: + tmp = child->mm->end_data; + break ; + default: + ret = -EIO; + } + } + if (!ret) + ret = put_user(tmp,(unsigned long *) data); + break ; + } + + /* when I and D space are separate, this will have to be fixed. */ + case PTRACE_POKETEXT: /* write the word at location addr. */ + case PTRACE_POKEDATA: + ret = 0; + if (access_process_vm(child, addr, &data, sizeof(data), 1) == sizeof(data)) + break; + ret = -EIO; + break; + + case PTRACE_POKEUSR: /* write the word at location addr in the USER area */ + if ((addr & 3) || addr < 0 || addr >= sizeof(struct user)) { + ret = -EIO; + break ; + } + addr = addr >> 2; /* temporary hack. */ + + if (addr == PT_ORIG_ER0) { + ret = -EIO; + break ; + } + if (addr < H8300_REGS_NO) { + ret = h8300_put_reg(child, addr, data); + break ; + } + ret = -EIO; + break ; + case PTRACE_SYSCALL: /* continue and stop at next (return from) syscall */ + case PTRACE_CONT: { /* restart after signal. */ + ret = -EIO; + if ((unsigned long) data >= _NSIG) + break ; + if (request == PTRACE_SYSCALL) + set_tsk_thread_flag(child, TIF_SYSCALL_TRACE); + else + clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE); + child->exit_code = data; + wake_up_process(child); + /* make sure the single step bit is not set. */ + h8300_disable_trace(child); + ret = 0; + } + +/* + * make the child exit. Best I can do is send it a sigkill. + * perhaps it should be put in the status that it wants to + * exit. + */ + case PTRACE_KILL: { + + ret = 0; + if (child->exit_state == EXIT_ZOMBIE) /* already dead */ + break; + child->exit_code = SIGKILL; + h8300_disable_trace(child); + wake_up_process(child); + break; + } + + case PTRACE_SINGLESTEP: { /* set the trap flag. */ + ret = -EIO; + if ((unsigned long) data > _NSIG) + break; + clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE); + child->exit_code = data; + h8300_enable_trace(child); + wake_up_process(child); + ret = 0; + break; + } + + case PTRACE_DETACH: /* detach a process that was attached. */ + ret = ptrace_detach(child, data); + break; + + case PTRACE_GETREGS: { /* Get all gp regs from the child. */ + int i; + unsigned long tmp; + for (i = 0; i < H8300_REGS_NO; i++) { + tmp = h8300_get_reg(child, i); + if (put_user(tmp, (unsigned long *) data)) { + ret = -EFAULT; + break; + } + data += sizeof(long); + } + ret = 0; + break; + } + + case PTRACE_SETREGS: { /* Set all gp regs in the child. */ + int i; + unsigned long tmp; + for (i = 0; i < H8300_REGS_NO; i++) { + if (get_user(tmp, (unsigned long *) data)) { + ret = -EFAULT; + break; + } + h8300_put_reg(child, i, tmp); + data += sizeof(long); + } + ret = 0; + break; + } + + default: + ret = -EIO; + break; + } +out_tsk: + put_task_struct(child); +out: + unlock_kernel(); + return ret; +} + +asmlinkage void syscall_trace(void) +{ + if (!test_thread_flag(TIF_SYSCALL_TRACE)) + return; + if (!(current->ptrace & PT_PTRACED)) + return; + ptrace_notify(SIGTRAP | ((current->ptrace & PT_TRACESYSGOOD) + ? 0x80 : 0)); + /* + * this isn't the same as continuing with a signal, but it will do + * for normal use. strace only continues with a signal if the + * stopping signal is not SIGTRAP. -brl + */ + if (current->exit_code) { + send_sig(current->exit_code, current, 1); + current->exit_code = 0; + } +} diff --git a/arch/h8300/kernel/semaphore.c b/arch/h8300/kernel/semaphore.c new file mode 100644 index 00000000000..1ebb79baaa8 --- /dev/null +++ b/arch/h8300/kernel/semaphore.c @@ -0,0 +1,133 @@ +/* + * Generic semaphore code. Buyer beware. Do your own + * specific changes in + */ + +#include +#include +#include +#include + +#ifndef CONFIG_RMW_INSNS +spinlock_t semaphore_wake_lock; +#endif + +/* + * Semaphores are implemented using a two-way counter: + * The "count" variable is decremented for each process + * that tries to sleep, while the "waking" variable is + * incremented when the "up()" code goes to wake up waiting + * processes. + * + * Notably, the inline "up()" and "down()" functions can + * efficiently test if they need to do any extra work (up + * needs to do something only if count was negative before + * the increment operation. + * + * waking_non_zero() (from asm/semaphore.h) must execute + * atomically. + * + * When __up() is called, the count was negative before + * incrementing it, and we need to wake up somebody. + * + * This routine adds one to the count of processes that need to + * wake up and exit. ALL waiting processes actually wake up but + * only the one that gets to the "waking" field first will gate + * through and acquire the semaphore. The others will go back + * to sleep. + * + * Note that these functions are only called when there is + * contention on the lock, and as such all this is the + * "non-critical" part of the whole semaphore business. The + * critical part is the inline stuff in + * where we want to avoid any extra jumps and calls. + */ +void __up(struct semaphore *sem) +{ + wake_one_more(sem); + wake_up(&sem->wait); +} + +/* + * Perform the "down" function. Return zero for semaphore acquired, + * return negative for signalled out of the function. + * + * If called from __down, the return is ignored and the wait loop is + * not interruptible. This means that a task waiting on a semaphore + * using "down()" cannot be killed until someone does an "up()" on + * the semaphore. + * + * If called from __down_interruptible, the return value gets checked + * upon return. If the return value is negative then the task continues + * with the negative value in the return register (it can be tested by + * the caller). + * + * Either form may be used in conjunction with "up()". + * + */ + + +#define DOWN_HEAD(task_state) \ + \ + \ + current->state = (task_state); \ + add_wait_queue(&sem->wait, &wait); \ + \ + /* \ + * Ok, we're set up. sem->count is known to be less than zero \ + * so we must wait. \ + * \ + * We can let go the lock for purposes of waiting. \ + * We re-acquire it after awaking so as to protect \ + * all semaphore operations. \ + * \ + * If "up()" is called before we call waking_non_zero() then \ + * we will catch it right away. If it is called later then \ + * we will have to go through a wakeup cycle to catch it. \ + * \ + * Multiple waiters contend for the semaphore lock to see \ + * who gets to gate through and who has to wait some more. \ + */ \ + for (;;) { + +#define DOWN_TAIL(task_state) \ + current->state = (task_state); \ + } \ + current->state = TASK_RUNNING; \ + remove_wait_queue(&sem->wait, &wait); + +void __sched __down(struct semaphore * sem) +{ + DECLARE_WAITQUEUE(wait, current); + + DOWN_HEAD(TASK_UNINTERRUPTIBLE) + if (waking_non_zero(sem)) + break; + schedule(); + DOWN_TAIL(TASK_UNINTERRUPTIBLE) +} + +int __sched __down_interruptible(struct semaphore * sem) +{ + DECLARE_WAITQUEUE(wait, current); + int ret = 0; + + DOWN_HEAD(TASK_INTERRUPTIBLE) + + ret = waking_non_zero_interruptible(sem, current); + if (ret) + { + if (ret == 1) + /* ret != 0 only if we get interrupted -arca */ + ret = 0; + break; + } + schedule(); + DOWN_TAIL(TASK_INTERRUPTIBLE) + return ret; +} + +int __down_trylock(struct semaphore * sem) +{ + return waking_non_zero_trylock(sem); +} diff --git a/arch/h8300/kernel/setup.c b/arch/h8300/kernel/setup.c new file mode 100644 index 00000000000..f469d916073 --- /dev/null +++ b/arch/h8300/kernel/setup.c @@ -0,0 +1,248 @@ +/* + * linux/arch/h8300/kernel/setup.c + * + * Copyleft ()) 2000 James D. Schettine {james@telos-systems.com} + * Copyright (C) 1999,2000 Greg Ungerer (gerg@snapgear.com) + * Copyright (C) 1998,1999 D. Jeff Dionne + * Copyright (C) 1998 Kenneth Albanowski + * Copyright (C) 1995 Hamish Macdonald + * Copyright (C) 2000 Lineo Inc. (www.lineo.com) + * Copyright (C) 2001 Lineo, Inc. + * + * H8/300 porting Yoshinori Sato + */ + +/* + * This file handles the architecture-dependent parts of system setup + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include + +#ifdef CONFIG_BLK_DEV_INITRD +#include +#endif + +#if defined(__H8300H__) +#define CPU "H8/300H" +#include +#endif + +#if defined(__H8300S__) +#define CPU "H8S" +#include +#endif + +#define STUBSIZE 0xc000; + +unsigned long rom_length; +unsigned long memory_start; +unsigned long memory_end; + +char command_line[COMMAND_LINE_SIZE]; + +extern int _stext, _etext, _sdata, _edata, _sbss, _ebss, _end; +extern int _ramstart, _ramend; +extern char _target_name[]; +extern void h8300_gpio_init(void); + +#if (defined(CONFIG_H8300H_SIM) || defined(CONFIG_H8S_SIM)) \ + && defined(CONFIG_GDB_MAGICPRINT) +/* printk with gdb service */ +static void gdb_console_output(struct console *c, const char *msg, unsigned len) +{ + for (; len > 0; len--) { + asm("mov.w %0,r2\n\t" + "jsr @0xc4"::"r"(*msg++):"er2"); + } +} + +/* + * Setup initial baud/bits/parity. We do two things here: + * - construct a cflag setting for the first rs_open() + * - initialize the serial port + * Return non-zero if we didn't find a serial port. + */ +static int __init gdb_console_setup(struct console *co, char *options) +{ + return 0; +} + +static const struct console gdb_console = { + .name = "gdb_con", + .write = gdb_console_output, + .device = NULL, + .setup = gdb_console_setup, + .flags = CON_PRINTBUFFER, + .index = -1, +}; +#endif + +void __init setup_arch(char **cmdline_p) +{ + int bootmap_size; + + memory_start = (unsigned long) &_ramstart; + + /* allow for ROMFS on the end of the kernel */ + if (memcmp((void *)memory_start, "-rom1fs-", 8) == 0) { +#if defined(CONFIG_BLK_DEV_INITRD) + initrd_start = memory_start; + initrd_end = memory_start += be32_to_cpu(((unsigned long *) (memory_start))[2]); +#else + memory_start += be32_to_cpu(((unsigned long *) memory_start)[2]); +#endif + } + memory_start = PAGE_ALIGN(memory_start); +#if !defined(CONFIG_BLKDEV_RESERVE) + memory_end = (unsigned long) &_ramend; /* by now the stack is part of the init task */ +#if defined(CONFIG_GDB_DEBUG) + memory_end -= STUBSIZE; +#endif +#else + if ((memory_end < CONFIG_BLKDEV_RESERVE_ADDRESS) && + (memory_end > CONFIG_BLKDEV_RESERVE_ADDRESS) + /* overlap userarea */ + memory_end = CONFIG_BLKDEV_RESERVE_ADDRESS; +#endif + + init_mm.start_code = (unsigned long) &_stext; + init_mm.end_code = (unsigned long) &_etext; + init_mm.end_data = (unsigned long) &_edata; + init_mm.brk = (unsigned long) 0; + +#if (defined(CONFIG_H8300H_SIM) || defined(CONFIG_H8S_SIM)) && defined(CONFIG_GDB_MAGICPRINT) + register_console((struct console *)&gdb_console); +#endif + + printk(KERN_INFO "\r\n\nuClinux " CPU "\n"); + printk(KERN_INFO "Target Hardware: %s\n",_target_name); + printk(KERN_INFO "Flat model support (C) 1998,1999 Kenneth Albanowski, D. Jeff Dionne\n"); + printk(KERN_INFO "H8/300 series support by Yoshinori Sato \n"); + +#ifdef DEBUG + printk(KERN_DEBUG "KERNEL -> TEXT=0x%06x-0x%06x DATA=0x%06x-0x%06x " + "BSS=0x%06x-0x%06x\n", (int) &_stext, (int) &_etext, + (int) &_sdata, (int) &_edata, + (int) &_sbss, (int) &_ebss); + printk(KERN_DEBUG "KERNEL -> ROMFS=0x%06x-0x%06x MEM=0x%06x-0x%06x " + "STACK=0x%06x-0x%06x\n", + (int) &_ebss, (int) memory_start, + (int) memory_start, (int) memory_end, + (int) memory_end, (int) &_ramend); +#endif + +#ifdef CONFIG_DEFAULT_CMDLINE + /* set from default command line */ + if (*command_line == '\0') + strcpy(command_line,CONFIG_KERNEL_COMMAND); +#endif + /* Keep a copy of command line */ + *cmdline_p = &command_line[0]; + memcpy(saved_command_line, command_line, COMMAND_LINE_SIZE); + saved_command_line[COMMAND_LINE_SIZE-1] = 0; + +#ifdef DEBUG + if (strlen(*cmdline_p)) + printk(KERN_DEBUG "Command line: '%s'\n", *cmdline_p); +#endif + + /* + * give all the memory to the bootmap allocator, tell it to put the + * boot mem_map at the start of memory + */ + bootmap_size = init_bootmem_node( + NODE_DATA(0), + memory_start >> PAGE_SHIFT, /* map goes here */ + PAGE_OFFSET >> PAGE_SHIFT, /* 0 on coldfire */ + memory_end >> PAGE_SHIFT); + /* + * free the usable memory, we have to make sure we do not free + * the bootmem bitmap so we then reserve it after freeing it :-) + */ + free_bootmem(memory_start, memory_end - memory_start); + reserve_bootmem(memory_start, bootmap_size); + /* + * get kmalloc into gear + */ + paging_init(); + h8300_gpio_init(); +#if defined(CONFIG_H8300_AKI3068NET) && defined(CONFIG_IDE) + { +#define AREABIT(addr) (1 << (((addr) >> 21) & 7)) + /* setup BSC */ + volatile unsigned char *abwcr = (volatile unsigned char *)ABWCR; + volatile unsigned char *cscr = (volatile unsigned char *)CSCR; + *abwcr &= ~(AREABIT(CONFIG_H8300_IDE_BASE) | AREABIT(CONFIG_H8300_IDE_ALT)); + *cscr |= (AREABIT(CONFIG_H8300_IDE_BASE) | AREABIT(CONFIG_H8300_IDE_ALT)) | 0x0f; + } +#endif +#ifdef DEBUG + printk(KERN_DEBUG "Done setup_arch\n"); +#endif +} + +/* + * Get CPU information for use by the procfs. + */ + +static int show_cpuinfo(struct seq_file *m, void *v) +{ + char *cpu; + int mode; + u_long clockfreq; + + cpu = CPU; + mode = *(volatile unsigned char *)MDCR & 0x07; + + clockfreq = CONFIG_CPU_CLOCK; + + seq_printf(m, "CPU:\t\t%s (mode:%d)\n" + "Clock:\t\t%lu.%1luMHz\n" + "BogoMips:\t%lu.%02lu\n" + "Calibration:\t%lu loops\n", + cpu,mode, + clockfreq/1000,clockfreq%1000, + (loops_per_jiffy*HZ)/500000,((loops_per_jiffy*HZ)/5000)%100, + (loops_per_jiffy*HZ)); + + return 0; +} + +static void *c_start(struct seq_file *m, loff_t *pos) +{ + return *pos < NR_CPUS ? ((void *) 0x12345678) : NULL; +} + +static void *c_next(struct seq_file *m, void *v, loff_t *pos) +{ + ++*pos; + return c_start(m, pos); +} + +static void c_stop(struct seq_file *m, void *v) +{ +} + +struct seq_operations cpuinfo_op = { + .start = c_start, + .next = c_next, + .stop = c_stop, + .show = show_cpuinfo, +}; diff --git a/arch/h8300/kernel/signal.c b/arch/h8300/kernel/signal.c new file mode 100644 index 00000000000..a4799d633ef --- /dev/null +++ b/arch/h8300/kernel/signal.c @@ -0,0 +1,552 @@ +/* + * linux/arch/h8300/kernel/signal.c + * + * Copyright (C) 1991, 1992 Linus Torvalds + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file COPYING in the main directory of this archive + * for more details. + */ + +/* + * uClinux H8/300 support by Yoshinori Sato + * and David McCullough + * + * Based on + * Linux/m68k by Hamish Macdonald + */ + +/* + * ++roman (07/09/96): implemented signal stacks (specially for tosemu on + * Atari :-) Current limitation: Only one sigstack can be active at one time. + * If a second signal with SA_ONSTACK set arrives while working on a sigstack, + * SA_ONSTACK is ignored. This behaviour avoids lots of trouble with nested + * signal handlers! + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include + +#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP))) + +asmlinkage int do_signal(struct pt_regs *regs, sigset_t *oldset); + +/* + * Atomically swap in the new signal mask, and wait for a signal. + */ +asmlinkage int do_sigsuspend(struct pt_regs *regs) +{ + old_sigset_t mask = regs->er3; + sigset_t saveset; + + mask &= _BLOCKABLE; + spin_lock_irq(¤t->sighand->siglock); + saveset = current->blocked; + siginitset(¤t->blocked, mask); + recalc_sigpending(); + spin_unlock_irq(¤t->sighand->siglock); + + regs->er0 = -EINTR; + while (1) { + current->state = TASK_INTERRUPTIBLE; + schedule(); + if (do_signal(regs, &saveset)) + return -EINTR; + } +} + +asmlinkage int +do_rt_sigsuspend(struct pt_regs *regs) +{ + sigset_t *unewset = (sigset_t *)regs->er1; + size_t sigsetsize = (size_t)regs->er2; + sigset_t saveset, newset; + + /* XXX: Don't preclude handling different sized sigset_t's. */ + if (sigsetsize != sizeof(sigset_t)) + return -EINVAL; + + if (copy_from_user(&newset, unewset, sizeof(newset))) + return -EFAULT; + sigdelsetmask(&newset, ~_BLOCKABLE); + + spin_lock_irq(¤t->sighand->siglock); + saveset = current->blocked; + current->blocked = newset; + recalc_sigpending(); + spin_unlock_irq(¤t->sighand->siglock); + + regs->er0 = -EINTR; + while (1) { + current->state = TASK_INTERRUPTIBLE; + schedule(); + if (do_signal(regs, &saveset)) + return -EINTR; + } +} + +asmlinkage int +sys_sigaction(int sig, const struct old_sigaction *act, + struct old_sigaction *oact) +{ + struct k_sigaction new_ka, old_ka; + int ret; + + if (act) { + old_sigset_t mask; + if (!access_ok(VERIFY_READ, act, sizeof(*act)) || + __get_user(new_ka.sa.sa_handler, &act->sa_handler) || + __get_user(new_ka.sa.sa_restorer, &act->sa_restorer)) + return -EFAULT; + __get_user(new_ka.sa.sa_flags, &act->sa_flags); + __get_user(mask, &act->sa_mask); + siginitset(&new_ka.sa.sa_mask, mask); + } + + ret = do_sigaction(sig, act ? &new_ka : NULL, oact ? &old_ka : NULL); + + if (!ret && oact) { + if (!access_ok(VERIFY_WRITE, oact, sizeof(*oact)) || + __put_user(old_ka.sa.sa_handler, &oact->sa_handler) || + __put_user(old_ka.sa.sa_restorer, &oact->sa_restorer)) + return -EFAULT; + __put_user(old_ka.sa.sa_flags, &oact->sa_flags); + __put_user(old_ka.sa.sa_mask.sig[0], &oact->sa_mask); + } + + return ret; +} + +asmlinkage int +sys_sigaltstack(const stack_t *uss, stack_t *uoss) +{ + return do_sigaltstack(uss, uoss, rdusp()); +} + + +/* + * Do a signal return; undo the signal stack. + * + * Keep the return code on the stack quadword aligned! + * That makes the cache flush below easier. + */ + +struct sigframe +{ + long dummy_er0; + long dummy_vector; +#if defined(CONFIG_CPU_H8S) + short dummy_exr; +#endif + long dummy_pc; + char *pretcode; + unsigned char retcode[8]; + unsigned long extramask[_NSIG_WORDS-1]; + struct sigcontext sc; + int sig; +} __attribute__((aligned(2),packed)); + +struct rt_sigframe +{ + long dummy_er0; + long dummy_vector; +#if defined(CONFIG_CPU_H8S) + short dummy_exr; +#endif + long dummy_pc; + char *pretcode; + struct siginfo *pinfo; + void *puc; + unsigned char retcode[8]; + struct siginfo info; + struct ucontext uc; + int sig; +} __attribute__((aligned(2),packed)); + +static inline int +restore_sigcontext(struct pt_regs *regs, struct sigcontext *usc, + int *pd0) +{ + int err = 0; + unsigned int ccr; + unsigned int usp; + unsigned int er0; + + /* Always make any pending restarted system calls return -EINTR */ + current_thread_info()->restart_block.fn = do_no_restart_syscall; + +#define COPY(r) err |= __get_user(regs->r, &usc->sc_##r) /* restore passed registers */ + COPY(er1); + COPY(er2); + COPY(er3); + COPY(er5); + COPY(pc); + ccr = regs->ccr & 0x10; + COPY(ccr); +#undef COPY + regs->ccr &= 0xef; + regs->ccr |= ccr; + regs->orig_er0 = -1; /* disable syscall checks */ + err |= __get_user(usp, &usc->sc_usp); + wrusp(usp); + + err |= __get_user(er0, &usc->sc_er0); + *pd0 = er0; + return err; +} + +asmlinkage int do_sigreturn(unsigned long __unused,...) +{ + struct pt_regs *regs = (struct pt_regs *) (&__unused - 1); + unsigned long usp = rdusp(); + struct sigframe *frame = (struct sigframe *)(usp - 4); + sigset_t set; + int er0; + + if (!access_ok(VERIFY_READ, frame, sizeof(*frame))) + goto badframe; + if (__get_user(set.sig[0], &frame->sc.sc_mask) || + (_NSIG_WORDS > 1 && + __copy_from_user(&set.sig[1], &frame->extramask, + sizeof(frame->extramask)))) + goto badframe; + + sigdelsetmask(&set, ~_BLOCKABLE); + spin_lock_irq(¤t->sighand->siglock); + current->blocked = set; + recalc_sigpending(); + spin_unlock_irq(¤t->sighand->siglock); + + if (restore_sigcontext(regs, &frame->sc, &er0)) + goto badframe; + return er0; + +badframe: + force_sig(SIGSEGV, current); + return 0; +} + +asmlinkage int do_rt_sigreturn(unsigned long __unused,...) +{ + struct pt_regs *regs = (struct pt_regs *) &__unused; + unsigned long usp = rdusp(); + struct rt_sigframe *frame = (struct rt_sigframe *)(usp - 4); + sigset_t set; + int er0; + + if (!access_ok(VERIFY_READ, frame, sizeof(*frame))) + goto badframe; + if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set))) + goto badframe; + + sigdelsetmask(&set, ~_BLOCKABLE); + spin_unlock_irq(¤t->sighand->siglock); + current->blocked = set; + recalc_sigpending(); + spin_lock_irq(¤t->sighand->siglock); + + if (restore_sigcontext(regs, &frame->uc.uc_mcontext, &er0)) + goto badframe; + + if (do_sigaltstack(&frame->uc.uc_stack, NULL, usp) == -EFAULT) + goto badframe; + + return er0; + +badframe: + force_sig(SIGSEGV, current); + return 0; +} + +static int setup_sigcontext(struct sigcontext __user *sc, struct pt_regs *regs, + unsigned long mask) +{ + int err = 0; + + err |= __put_user(regs->er0, &sc->sc_er0); + err |= __put_user(regs->er1, &sc->sc_er1); + err |= __put_user(regs->er2, &sc->sc_er2); + err |= __put_user(regs->er3, &sc->sc_er3); + err |= __put_user(regs->er4, &sc->sc_er4); + err |= __put_user(regs->er5, &sc->sc_er5); + err |= __put_user(regs->er6, &sc->sc_er6); + err |= __put_user(rdusp(), &sc->sc_usp); + err |= __put_user(regs->pc, &sc->sc_pc); + err |= __put_user(regs->ccr, &sc->sc_ccr); + err |= __put_user(mask, &sc->sc_mask); + + return err; +} + +static inline void * +get_sigframe(struct k_sigaction *ka, struct pt_regs *regs, size_t frame_size) +{ + unsigned long usp; + + /* Default to using normal stack. */ + usp = rdusp(); + + /* This is the X/Open sanctioned signal stack switching. */ + if (ka->sa.sa_flags & SA_ONSTACK) { + if (!on_sig_stack(usp)) + usp = current->sas_ss_sp + current->sas_ss_size; + } + return (void *)((usp - frame_size) & -8UL); +} + +static void setup_frame (int sig, struct k_sigaction *ka, + sigset_t *set, struct pt_regs *regs) +{ + struct sigframe *frame; + int err = 0; + int usig; + unsigned char *ret; + + frame = get_sigframe(ka, regs, sizeof(*frame)); + + if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame))) + goto give_sigsegv; + + usig = current_thread_info()->exec_domain + && current_thread_info()->exec_domain->signal_invmap + && sig < 32 + ? current_thread_info()->exec_domain->signal_invmap[sig] + : sig; + + err |= __put_user(usig, &frame->sig); + if (err) + goto give_sigsegv; + + err |= setup_sigcontext(&frame->sc, regs, set->sig[0]); + if (err) + goto give_sigsegv; + + if (_NSIG_WORDS > 1) { + err |= copy_to_user(frame->extramask, &set->sig[1], + sizeof(frame->extramask)); + if (err) + goto give_sigsegv; + } + + ret = frame->retcode; + if (ka->sa.sa_flags & SA_RESTORER) + ret = (unsigned char *)(ka->sa.sa_restorer); + else { + /* sub.l er0,er0; mov.b #__NR_sigreturn,r0l; trapa #0 */ + err != __put_user(0x1a80f800 + (__NR_sigreturn & 0xff), + (unsigned long *)(frame->retcode + 0)); + err |= __put_user(0x5700, (unsigned short *)(frame->retcode + 4)); + } + + /* Set up to return from userspace. */ + err |= __put_user(ret, &frame->pretcode); + + if (err) + goto give_sigsegv; + + /* Set up registers for signal handler */ + wrusp ((unsigned long) frame); + regs->pc = (unsigned long) ka->sa.sa_handler; + regs->er0 = (current_thread_info()->exec_domain + && current_thread_info()->exec_domain->signal_invmap + && sig < 32 + ? current_thread_info()->exec_domain->signal_invmap[sig] + : sig); + regs->er1 = (unsigned long)&(frame->sc); + regs->er5 = current->mm->start_data; /* GOT base */ + + return; + +give_sigsegv: + force_sigsegv(sig, current); +} + +static void setup_rt_frame (int sig, struct k_sigaction *ka, siginfo_t *info, + sigset_t *set, struct pt_regs *regs) +{ + struct rt_sigframe *frame; + int err = 0; + int usig; + unsigned char *ret; + + frame = get_sigframe(ka, regs, sizeof(*frame)); + + if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame))) + goto give_sigsegv; + + usig = current_thread_info()->exec_domain + && current_thread_info()->exec_domain->signal_invmap + && sig < 32 + ? current_thread_info()->exec_domain->signal_invmap[sig] + : sig; + + err |= __put_user(usig, &frame->sig); + if (err) + goto give_sigsegv; + + err |= __put_user(&frame->info, &frame->pinfo); + err |= __put_user(&frame->uc, &frame->puc); + err |= copy_siginfo_to_user(&frame->info, info); + if (err) + goto give_sigsegv; + + /* Create the ucontext. */ + err |= __put_user(0, &frame->uc.uc_flags); + err |= __put_user(0, &frame->uc.uc_link); + err |= __put_user((void *)current->sas_ss_sp, + &frame->uc.uc_stack.ss_sp); + err |= __put_user(sas_ss_flags(rdusp()), + &frame->uc.uc_stack.ss_flags); + err |= __put_user(current->sas_ss_size, &frame->uc.uc_stack.ss_size); + err |= setup_sigcontext(&frame->uc.uc_mcontext, regs, set->sig[0]); + err |= copy_to_user (&frame->uc.uc_sigmask, set, sizeof(*set)); + if (err) + goto give_sigsegv; + + /* Set up to return from userspace. */ + ret = frame->retcode; + if (ka->sa.sa_flags & SA_RESTORER) + ret = (unsigned char *)(ka->sa.sa_restorer); + else { + /* sub.l er0,er0; mov.b #__NR_sigreturn,r0l; trapa #0 */ + err != __put_user(0x1a80f800 + (__NR_sigreturn & 0xff), + (unsigned long *)(frame->retcode + 0)); + err |= __put_user(0x5700, (unsigned short *)(frame->retcode + 4)); + } + err |= __put_user(ret, &frame->pretcode); + + if (err) + goto give_sigsegv; + + /* Set up registers for signal handler */ + wrusp ((unsigned long) frame); + regs->pc = (unsigned long) ka->sa.sa_handler; + regs->er0 = (current_thread_info()->exec_domain + && current_thread_info()->exec_domain->signal_invmap + && sig < 32 + ? current_thread_info()->exec_domain->signal_invmap[sig] + : sig); + regs->er1 = (unsigned long)&(frame->info); + regs->er2 = (unsigned long)&frame->uc; + regs->er5 = current->mm->start_data; /* GOT base */ + + return; + +give_sigsegv: + force_sigsegv(sig, current); +} + +/* + * OK, we're invoking a handler + */ +static void +handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka, + sigset_t *oldset, struct pt_regs * regs) +{ + /* are we from a system call? */ + if (regs->orig_er0 >= 0) { + switch (regs->er0) { + case -ERESTART_RESTARTBLOCK: + case -ERESTARTNOHAND: + regs->er0 = -EINTR; + break; + + case -ERESTARTSYS: + if (!(ka->sa.sa_flags & SA_RESTART)) { + regs->er0 = -EINTR; + break; + } + /* fallthrough */ + case -ERESTARTNOINTR: + regs->er0 = regs->orig_er0; + regs->pc -= 2; + } + } + + /* set up the stack frame */ + if (ka->sa.sa_flags & SA_SIGINFO) + setup_rt_frame(sig, ka, info, oldset, regs); + else + setup_frame(sig, ka, oldset, regs); + + if (!(ka->sa.sa_flags & SA_NODEFER)) { + spin_lock_irq(¤t->sighand->siglock); + sigorsets(¤t->blocked,¤t->blocked,&ka->sa.sa_mask); + sigaddset(¤t->blocked,sig); + recalc_sigpending(); + spin_unlock_irq(¤t->sighand->siglock); + } +} + +/* + * Note that 'init' is a special process: it doesn't get signals it doesn't + * want to handle. Thus you cannot kill init even with a SIGKILL even by + * mistake. + */ +asmlinkage int do_signal(struct pt_regs *regs, sigset_t *oldset) +{ + siginfo_t info; + int signr; + struct k_sigaction ka; + + /* + * We want the common case to go fast, which + * is why we may in certain cases get here from + * kernel mode. Just return without doing anything + * if so. + */ + if ((regs->ccr & 0x10)) + return 1; + + if (current->flags & PF_FREEZE) { + refrigerator(0); + goto no_signal; + } + + current->thread.esp0 = (unsigned long) regs; + + if (!oldset) + oldset = ¤t->blocked; + + signr = get_signal_to_deliver(&info, &ka, regs, NULL); + if (signr > 0) { + /* Whee! Actually deliver the signal. */ + handle_signal(signr, &info, &ka, oldset, regs); + return 1; + } + no_signal: + /* Did we come from a system call? */ + if (regs->orig_er0 >= 0) { + /* Restart the system call - no handlers present */ + if (regs->er0 == -ERESTARTNOHAND || + regs->er0 == -ERESTARTSYS || + regs->er0 == -ERESTARTNOINTR) { + regs->er0 = regs->orig_er0; + regs->pc -= 2; + } + if (regs->er0 == -ERESTART_RESTARTBLOCK){ + regs->er0 = __NR_restart_syscall; + regs->pc -= 2; + } + } + return 0; +} diff --git a/arch/h8300/kernel/sys_h8300.c b/arch/h8300/kernel/sys_h8300.c new file mode 100644 index 00000000000..0f61b7ad69a --- /dev/null +++ b/arch/h8300/kernel/sys_h8300.c @@ -0,0 +1,282 @@ +/* + * linux/arch/h8300/kernel/sys_h8300.c + * + * This file contains various random system calls that + * have a non-standard calling sequence on the H8/300 + * platform. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include + +/* + * sys_pipe() is the normal C calling standard for creating + * a pipe. It's not the way unix traditionally does this, though. + */ +asmlinkage int sys_pipe(unsigned long * fildes) +{ + int fd[2]; + int error; + + error = do_pipe(fd); + if (!error) { + if (copy_to_user(fildes, fd, 2*sizeof(int))) + error = -EFAULT; + } + return error; +} + +/* common code for old and new mmaps */ +static inline long do_mmap2( + unsigned long addr, unsigned long len, + unsigned long prot, unsigned long flags, + unsigned long fd, unsigned long pgoff) +{ + int error = -EBADF; + struct file * file = NULL; + + flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE); + if (!(flags & MAP_ANONYMOUS)) { + file = fget(fd); + if (!file) + goto out; + } + + down_write(¤t->mm->mmap_sem); + error = do_mmap_pgoff(file, addr, len, prot, flags, pgoff); + up_write(¤t->mm->mmap_sem); + + if (file) + fput(file); +out: + return error; +} + +asmlinkage long sys_mmap2(unsigned long addr, unsigned long len, + unsigned long prot, unsigned long flags, + unsigned long fd, unsigned long pgoff) +{ + return do_mmap2(addr, len, prot, flags, fd, pgoff); +} + +/* + * Perform the select(nd, in, out, ex, tv) and mmap() system + * calls. Linux/m68k cloned Linux/i386, which didn't use to be able to + * handle more than 4 system call parameters, so these system calls + * used a memory block for parameter passing.. + */ + +struct mmap_arg_struct { + unsigned long addr; + unsigned long len; + unsigned long prot; + unsigned long flags; + unsigned long fd; + unsigned long offset; +}; + +asmlinkage int old_mmap(struct mmap_arg_struct *arg) +{ + struct mmap_arg_struct a; + int error = -EFAULT; + + if (copy_from_user(&a, arg, sizeof(a))) + goto out; + + error = -EINVAL; + if (a.offset & ~PAGE_MASK) + goto out; + + a.flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE); + + error = do_mmap2(a.addr, a.len, a.prot, a.flags, a.fd, a.offset >> PAGE_SHIFT); +out: + return error; +} + +#if 0 /* DAVIDM - do we want this */ +struct mmap_arg_struct64 { + __u32 addr; + __u32 len; + __u32 prot; + __u32 flags; + __u64 offset; /* 64 bits */ + __u32 fd; +}; + +asmlinkage long sys_mmap64(struct mmap_arg_struct64 *arg) +{ + int error = -EFAULT; + struct file * file = NULL; + struct mmap_arg_struct64 a; + unsigned long pgoff; + + if (copy_from_user(&a, arg, sizeof(a))) + return -EFAULT; + + if ((long)a.offset & ~PAGE_MASK) + return -EINVAL; + + pgoff = a.offset >> PAGE_SHIFT; + if ((a.offset >> PAGE_SHIFT) != pgoff) + return -EINVAL; + + if (!(a.flags & MAP_ANONYMOUS)) { + error = -EBADF; + file = fget(a.fd); + if (!file) + goto out; + } + a.flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE); + + down_write(¤t->mm->mmap_sem); + error = do_mmap_pgoff(file, a.addr, a.len, a.prot, a.flags, pgoff); + up_write(¤t->mm->mmap_sem); + if (file) + fput(file); +out: + return error; +} +#endif + +struct sel_arg_struct { + unsigned long n; + fd_set *inp, *outp, *exp; + struct timeval *tvp; +}; + +asmlinkage int old_select(struct sel_arg_struct *arg) +{ + struct sel_arg_struct a; + + if (copy_from_user(&a, arg, sizeof(a))) + return -EFAULT; + /* sys_select() does the appropriate kernel locking */ + return sys_select(a.n, a.inp, a.outp, a.exp, a.tvp); +} + +/* + * sys_ipc() is the de-multiplexer for the SysV IPC calls.. + * + * This is really horribly ugly. + */ +asmlinkage int sys_ipc (uint call, int first, int second, + int third, void *ptr, long fifth) +{ + int version, ret; + + version = call >> 16; /* hack for backward compatibility */ + call &= 0xffff; + + if (call <= SEMCTL) + switch (call) { + case SEMOP: + return sys_semop (first, (struct sembuf *)ptr, second); + case SEMGET: + return sys_semget (first, second, third); + case SEMCTL: { + union semun fourth; + if (!ptr) + return -EINVAL; + if (get_user(fourth.__pad, (void **) ptr)) + return -EFAULT; + return sys_semctl (first, second, third, fourth); + } + default: + return -EINVAL; + } + if (call <= MSGCTL) + switch (call) { + case MSGSND: + return sys_msgsnd (first, (struct msgbuf *) ptr, + second, third); + case MSGRCV: + switch (version) { + case 0: { + struct ipc_kludge tmp; + if (!ptr) + return -EINVAL; + if (copy_from_user (&tmp, + (struct ipc_kludge *)ptr, + sizeof (tmp))) + return -EFAULT; + return sys_msgrcv (first, tmp.msgp, second, + tmp.msgtyp, third); + } + default: + return sys_msgrcv (first, + (struct msgbuf *) ptr, + second, fifth, third); + } + case MSGGET: + return sys_msgget ((key_t) first, second); + case MSGCTL: + return sys_msgctl (first, second, + (struct msqid_ds *) ptr); + default: + return -EINVAL; + } + if (call <= SHMCTL) + switch (call) { + case SHMAT: + switch (version) { + default: { + ulong raddr; + ret = do_shmat (first, (char *) ptr, + second, &raddr); + if (ret) + return ret; + return put_user (raddr, (ulong *) third); + } + } + case SHMDT: + return sys_shmdt ((char *)ptr); + case SHMGET: + return sys_shmget (first, second, third); + case SHMCTL: + return sys_shmctl (first, second, + (struct shmid_ds *) ptr); + default: + return -EINVAL; + } + + return -EINVAL; +} + +/* sys_cacheflush -- no support. */ +asmlinkage int +sys_cacheflush (unsigned long addr, int scope, int cache, unsigned long len) +{ + return -EINVAL; +} + +asmlinkage int sys_getpagesize(void) +{ + return PAGE_SIZE; +} + +#if defined(CONFIG_SYSCALL_PRINT) +asmlinkage void syscall_print(void *dummy,...) +{ + struct pt_regs *regs = (struct pt_regs *) ((unsigned char *)&dummy-4); + printk("call %06lx:%ld 1:%08lx,2:%08lx,3:%08lx,ret:%08lx\n", + ((regs->pc)&0xffffff)-2,regs->orig_er0,regs->er1,regs->er2,regs->er3,regs->er0); +} +#endif diff --git a/arch/h8300/kernel/syscalls.S b/arch/h8300/kernel/syscalls.S new file mode 100644 index 00000000000..79b3bda5c6e --- /dev/null +++ b/arch/h8300/kernel/syscalls.S @@ -0,0 +1,340 @@ +/* Systemcall Entry Table */ +#include +#include +#include +#include + +.globl SYMBOL_NAME(sys_call_table) + +#if defined(CONFIG_CPU_H8300H) + .h8300h +#endif +#if defined(CONFIG_CPU_H8S) + .h8300s +#endif + .section .text + .align 2 +SYMBOL_NAME_LABEL(sys_call_table) + .long SYMBOL_NAME(sys_ni_syscall) /* 0 - old "setup()" system call*/ + .long SYMBOL_NAME(sys_exit) + .long SYMBOL_NAME(sys_fork) + .long SYMBOL_NAME(sys_read) + .long SYMBOL_NAME(sys_write) + .long SYMBOL_NAME(sys_open) /* 5 */ + .long SYMBOL_NAME(sys_close) + .long SYMBOL_NAME(sys_waitpid) + .long SYMBOL_NAME(sys_creat) + .long SYMBOL_NAME(sys_link) + .long SYMBOL_NAME(sys_unlink) /* 10 */ + .long SYMBOL_NAME(sys_execve) + .long SYMBOL_NAME(sys_chdir) + .long SYMBOL_NAME(sys_time) + .long SYMBOL_NAME(sys_mknod) + .long SYMBOL_NAME(sys_chmod) /* 15 */ + .long SYMBOL_NAME(sys_chown16) + .long SYMBOL_NAME(sys_ni_syscall) /* old break syscall holder */ + .long SYMBOL_NAME(sys_stat) + .long SYMBOL_NAME(sys_lseek) + .long SYMBOL_NAME(sys_getpid) /* 20 */ + .long SYMBOL_NAME(sys_mount) + .long SYMBOL_NAME(sys_oldumount) + .long SYMBOL_NAME(sys_setuid16) + .long SYMBOL_NAME(sys_getuid16) + .long SYMBOL_NAME(sys_stime) /* 25 */ + .long SYMBOL_NAME(sys_ptrace) + .long SYMBOL_NAME(sys_alarm) + .long SYMBOL_NAME(sys_fstat) + .long SYMBOL_NAME(sys_pause) + .long SYMBOL_NAME(sys_utime) /* 30 */ + .long SYMBOL_NAME(sys_ni_syscall) /* old stty syscall holder */ + .long SYMBOL_NAME(sys_ni_syscall) /* old gtty syscall holder */ + .long SYMBOL_NAME(sys_access) + .long SYMBOL_NAME(sys_nice) + .long SYMBOL_NAME(sys_ni_syscall) /* 35 */ /* old ftime syscall holder */ + .long SYMBOL_NAME(sys_sync) + .long SYMBOL_NAME(sys_kill) + .long SYMBOL_NAME(sys_rename) + .long SYMBOL_NAME(sys_mkdir) + .long SYMBOL_NAME(sys_rmdir) /* 40 */ + .long SYMBOL_NAME(sys_dup) + .long SYMBOL_NAME(sys_pipe) + .long SYMBOL_NAME(sys_times) + .long SYMBOL_NAME(sys_ni_syscall) /* old prof syscall holder */ + .long SYMBOL_NAME(sys_brk) /* 45 */ + .long SYMBOL_NAME(sys_setgid16) + .long SYMBOL_NAME(sys_getgid16) + .long SYMBOL_NAME(sys_signal) + .long SYMBOL_NAME(sys_geteuid16) + .long SYMBOL_NAME(sys_getegid16) /* 50 */ + .long SYMBOL_NAME(sys_acct) + .long SYMBOL_NAME(sys_umount) /* recycled never used phys() */ + .long SYMBOL_NAME(sys_ni_syscall) /* old lock syscall holder */ + .long SYMBOL_NAME(sys_ioctl) + .long SYMBOL_NAME(sys_fcntl) /* 55 */ + .long SYMBOL_NAME(sys_ni_syscall) /* old mpx syscall holder */ + .long SYMBOL_NAME(sys_setpgid) + .long SYMBOL_NAME(sys_ni_syscall) /* old ulimit syscall holder */ + .long SYMBOL_NAME(sys_ni_syscall) + .long SYMBOL_NAME(sys_umask) /* 60 */ + .long SYMBOL_NAME(sys_chroot) + .long SYMBOL_NAME(sys_ustat) + .long SYMBOL_NAME(sys_dup2) + .long SYMBOL_NAME(sys_getppid) + .long SYMBOL_NAME(sys_getpgrp) /* 65 */ + .long SYMBOL_NAME(sys_setsid) + .long SYMBOL_NAME(sys_sigaction) + .long SYMBOL_NAME(sys_sgetmask) + .long SYMBOL_NAME(sys_ssetmask) + .long SYMBOL_NAME(sys_setreuid16) /* 70 */ + .long SYMBOL_NAME(sys_setregid16) + .long SYMBOL_NAME(sys_sigsuspend) + .long SYMBOL_NAME(sys_sigpending) + .long SYMBOL_NAME(sys_sethostname) + .long SYMBOL_NAME(sys_setrlimit) /* 75 */ + .long SYMBOL_NAME(sys_old_getrlimit) + .long SYMBOL_NAME(sys_getrusage) + .long SYMBOL_NAME(sys_gettimeofday) + .long SYMBOL_NAME(sys_settimeofday) + .long SYMBOL_NAME(sys_getgroups16) /* 80 */ + .long SYMBOL_NAME(sys_setgroups16) + .long SYMBOL_NAME(old_select) + .long SYMBOL_NAME(sys_symlink) + .long SYMBOL_NAME(sys_lstat) + .long SYMBOL_NAME(sys_readlink) /* 85 */ + .long SYMBOL_NAME(sys_uselib) + .long SYMBOL_NAME(sys_swapon) + .long SYMBOL_NAME(sys_reboot) + .long SYMBOL_NAME(old_readdir) + .long SYMBOL_NAME(old_mmap) /* 90 */ + .long SYMBOL_NAME(sys_munmap) + .long SYMBOL_NAME(sys_truncate) + .long SYMBOL_NAME(sys_ftruncate) + .long SYMBOL_NAME(sys_fchmod) + .long SYMBOL_NAME(sys_fchown16) /* 95 */ + .long SYMBOL_NAME(sys_getpriority) + .long SYMBOL_NAME(sys_setpriority) + .long SYMBOL_NAME(sys_ni_syscall) /* old profil syscall holder */ + .long SYMBOL_NAME(sys_statfs) + .long SYMBOL_NAME(sys_fstatfs) /* 100 */ + .long SYMBOL_NAME(sys_ni_syscall) /* ioperm for i386 */ + .long SYMBOL_NAME(sys_socketcall) + .long SYMBOL_NAME(sys_syslog) + .long SYMBOL_NAME(sys_setitimer) + .long SYMBOL_NAME(sys_getitimer) /* 105 */ + .long SYMBOL_NAME(sys_newstat) + .long SYMBOL_NAME(sys_newlstat) + .long SYMBOL_NAME(sys_newfstat) + .long SYMBOL_NAME(sys_ni_syscall) + .long SYMBOL_NAME(sys_ni_syscall) /* iopl for i386 */ /* 110 */ + .long SYMBOL_NAME(sys_vhangup) + .long SYMBOL_NAME(sys_ni_syscall) /* obsolete idle() syscall */ + .long SYMBOL_NAME(sys_ni_syscall) /* vm86old for i386 */ + .long SYMBOL_NAME(sys_wait4) + .long SYMBOL_NAME(sys_swapoff) /* 115 */ + .long SYMBOL_NAME(sys_sysinfo) + .long SYMBOL_NAME(sys_ipc) + .long SYMBOL_NAME(sys_fsync) + .long SYMBOL_NAME(sys_sigreturn) + .long SYMBOL_NAME(sys_clone) /* 120 */ + .long SYMBOL_NAME(sys_setdomainname) + .long SYMBOL_NAME(sys_newuname) + .long SYMBOL_NAME(sys_cacheflush) /* modify_ldt for i386 */ + .long SYMBOL_NAME(sys_adjtimex) + .long SYMBOL_NAME(sys_ni_syscall) /* 125 sys_mprotect */ + .long SYMBOL_NAME(sys_sigprocmask) + .long SYMBOL_NAME(sys_ni_syscall) /* sys_create_module */ + .long SYMBOL_NAME(sys_init_module) + .long SYMBOL_NAME(sys_delete_module) + .long SYMBOL_NAME(sys_ni_syscall) /* 130 sys_get_kernel_syms */ + .long SYMBOL_NAME(sys_quotactl) + .long SYMBOL_NAME(sys_getpgid) + .long SYMBOL_NAME(sys_fchdir) + .long SYMBOL_NAME(sys_bdflush) + .long SYMBOL_NAME(sys_sysfs) /* 135 */ + .long SYMBOL_NAME(sys_personality) + .long SYMBOL_NAME(sys_ni_syscall) /* for afs_syscall */ + .long SYMBOL_NAME(sys_setfsuid16) + .long SYMBOL_NAME(sys_setfsgid16) + .long SYMBOL_NAME(sys_llseek) /* 140 */ + .long SYMBOL_NAME(sys_getdents) + .long SYMBOL_NAME(sys_select) + .long SYMBOL_NAME(sys_flock) + .long SYMBOL_NAME(sys_ni_syscall) /* sys_msync */ + .long SYMBOL_NAME(sys_readv) /* 145 */ + .long SYMBOL_NAME(sys_writev) + .long SYMBOL_NAME(sys_getsid) + .long SYMBOL_NAME(sys_fdatasync) + .long SYMBOL_NAME(sys_sysctl) + .long SYMBOL_NAME(sys_ni_syscall) /* 150 sys_mlock */ + .long SYMBOL_NAME(sys_ni_syscall) /* sys_munlock */ + .long SYMBOL_NAME(sys_ni_syscall) /* sys_mlockall */ + .long SYMBOL_NAME(sys_ni_syscall) /* sys_munlockall */ + .long SYMBOL_NAME(sys_sched_setparam) + .long SYMBOL_NAME(sys_sched_getparam) /* 155 */ + .long SYMBOL_NAME(sys_sched_setscheduler) + .long SYMBOL_NAME(sys_sched_getscheduler) + .long SYMBOL_NAME(sys_sched_yield) + .long SYMBOL_NAME(sys_sched_get_priority_max) + .long SYMBOL_NAME(sys_sched_get_priority_min) /* 160 */ + .long SYMBOL_NAME(sys_sched_rr_get_interval) + .long SYMBOL_NAME(sys_nanosleep) + .long SYMBOL_NAME(sys_ni_syscall) /* sys_mremap */ + .long SYMBOL_NAME(sys_setresuid16) + .long SYMBOL_NAME(sys_getresuid16) /* 165 */ + .long SYMBOL_NAME(sys_ni_syscall) /* for vm86 */ + .long SYMBOL_NAME(sys_ni_syscall) /* sys_query_module */ + .long SYMBOL_NAME(sys_poll) + .long SYMBOL_NAME(sys_nfsservctl) + .long SYMBOL_NAME(sys_setresgid16) /* 170 */ + .long SYMBOL_NAME(sys_getresgid16) + .long SYMBOL_NAME(sys_prctl) + .long SYMBOL_NAME(sys_rt_sigreturn) + .long SYMBOL_NAME(sys_rt_sigaction) + .long SYMBOL_NAME(sys_rt_sigprocmask) /* 175 */ + .long SYMBOL_NAME(sys_rt_sigpending) + .long SYMBOL_NAME(sys_rt_sigtimedwait) + .long SYMBOL_NAME(sys_rt_sigqueueinfo) + .long SYMBOL_NAME(sys_rt_sigsuspend) + .long SYMBOL_NAME(sys_pread64) /* 180 */ + .long SYMBOL_NAME(sys_pwrite64) + .long SYMBOL_NAME(sys_lchown16); + .long SYMBOL_NAME(sys_getcwd) + .long SYMBOL_NAME(sys_capget) + .long SYMBOL_NAME(sys_capset) /* 185 */ + .long SYMBOL_NAME(sys_sigaltstack) + .long SYMBOL_NAME(sys_sendfile) + .long SYMBOL_NAME(sys_ni_syscall) /* streams1 */ + .long SYMBOL_NAME(sys_ni_syscall) /* streams2 */ + .long SYMBOL_NAME(sys_vfork) /* 190 */ + .long SYMBOL_NAME(sys_getrlimit) + .long SYMBOL_NAME(sys_mmap2) + .long SYMBOL_NAME(sys_truncate64) + .long SYMBOL_NAME(sys_ftruncate64) + .long SYMBOL_NAME(sys_stat64) /* 195 */ + .long SYMBOL_NAME(sys_lstat64) + .long SYMBOL_NAME(sys_fstat64) + .long SYMBOL_NAME(sys_chown) + .long SYMBOL_NAME(sys_getuid) + .long SYMBOL_NAME(sys_getgid) /* 200 */ + .long SYMBOL_NAME(sys_geteuid) + .long SYMBOL_NAME(sys_getegid) + .long SYMBOL_NAME(sys_setreuid) + .long SYMBOL_NAME(sys_setregid) + .long SYMBOL_NAME(sys_getgroups) /* 205 */ + .long SYMBOL_NAME(sys_setgroups) + .long SYMBOL_NAME(sys_fchown) + .long SYMBOL_NAME(sys_setresuid) + .long SYMBOL_NAME(sys_getresuid) + .long SYMBOL_NAME(sys_setresgid) /* 210 */ + .long SYMBOL_NAME(sys_getresgid) + .long SYMBOL_NAME(sys_lchown) + .long SYMBOL_NAME(sys_setuid) + .long SYMBOL_NAME(sys_setgid) + .long SYMBOL_NAME(sys_setfsuid) /* 215 */ + .long SYMBOL_NAME(sys_setfsgid) + .long SYMBOL_NAME(sys_pivot_root) + .long SYMBOL_NAME(sys_ni_syscall) + .long SYMBOL_NAME(sys_ni_syscall) + .long SYMBOL_NAME(sys_getdents64) /* 220 */ + .long SYMBOL_NAME(sys_fcntl64) + .long SYMBOL_NAME(sys_ni_syscall) /* reserved for TUX */ + .long SYMBOL_NAME(sys_ni_syscall) + .long SYMBOL_NAME(sys_gettid) + .long SYMBOL_NAME(sys_ni_syscall) /* 225 */ /* sys_readahead */ + .long SYMBOL_NAME(sys_setxattr) + .long SYMBOL_NAME(sys_lsetxattr) + .long SYMBOL_NAME(sys_fsetxattr) + .long SYMBOL_NAME(sys_getxattr) + .long SYMBOL_NAME(sys_lgetxattr) /* 230 */ + .long SYMBOL_NAME(sys_fgetxattr) + .long SYMBOL_NAME(sys_listxattr) + .long SYMBOL_NAME(sys_llistxattr) + .long SYMBOL_NAME(sys_flistxattr) + .long SYMBOL_NAME(sys_removexattr) /* 235 */ + .long SYMBOL_NAME(sys_lremovexattr) + .long SYMBOL_NAME(sys_fremovexattr) + .long SYMBOL_NAME(sys_tkill) + .long SYMBOL_NAME(sys_sendfile64) + .long SYMBOL_NAME(sys_futex) /* 240 */ + .long SYMBOL_NAME(sys_sched_setaffinity) + .long SYMBOL_NAME(sys_sched_getaffinity) + .long SYMBOL_NAME(sys_ni_syscall) /* sys_set_thread_area */ + .long SYMBOL_NAME(sys_ni_syscall) /* sys_get_thread_area */ + .long SYMBOL_NAME(sys_io_setup) /* 245 */ + .long SYMBOL_NAME(sys_io_destroy) + .long SYMBOL_NAME(sys_io_getevents) + .long SYMBOL_NAME(sys_io_submit) + .long SYMBOL_NAME(sys_io_cancel) + .long SYMBOL_NAME(sys_fadvise64) /* 250 */ + .long SYMBOL_NAME(sys_ni_syscall) + .long SYMBOL_NAME(sys_exit_group) + .long SYMBOL_NAME(sys_lookup_dcookie) + .long SYMBOL_NAME(sys_epoll_create) + .long SYMBOL_NAME(sys_epoll_ctl) /* 255 */ + .long SYMBOL_NAME(sys_epoll_wait) + .long SYMBOL_NAME(sys_ni_syscall) /* sys_remap_file_pages */ + .long SYMBOL_NAME(sys_set_tid_address) + .long SYMBOL_NAME(sys_timer_create) + .long SYMBOL_NAME(sys_timer_settime) /* 260 */ + .long SYMBOL_NAME(sys_timer_gettime) + .long SYMBOL_NAME(sys_timer_getoverrun) + .long SYMBOL_NAME(sys_timer_delete) + .long SYMBOL_NAME(sys_clock_settime) + .long SYMBOL_NAME(sys_clock_gettime) /* 265 */ + .long SYMBOL_NAME(sys_clock_getres) + .long SYMBOL_NAME(sys_clock_nanosleep) + .long SYMBOL_NAME(sys_statfs64) + .long SYMBOL_NAME(sys_fstatfs64) + .long SYMBOL_NAME(sys_tgkill) /* 270 */ + .long SYMBOL_NAME(sys_utimes) + .long SYMBOL_NAME(sys_fadvise64_64) + .long SYMBOL_NAME(sys_ni_syscall) /* sys_vserver */ + .long SYMBOL_NAME(sys_mbind) + .long SYMBOL_NAME(sys_get_mempolicy) + .long SYMBOL_NAME(sys_set_mempolicy) + .long SYMBOL_NAME(sys_mq_open) + .long SYMBOL_NAME(sys_mq_unlink) + .long SYMBOL_NAME(sys_mq_timedsend) + .long SYMBOL_NAME(sys_mq_timedreceive) /* 280 */ + .long SYMBOL_NAME(sys_mq_notify) + .long SYMBOL_NAME(sys_mq_getsetattr) + .long SYMBOL_NAME(sys_ni_syscall) /* reserved for kexec */ + .long SYMBOL_NAME(sys_waitid) + .long SYMBOL_NAME(sys_ni_syscall) /* 285 */ /* available */ + .long SYMBOL_NAME(sys_add_key) + .long SYMBOL_NAME(sys_request_key) + .long SYMBOL_NAME(sys_keyctl) + + .rept NR_syscalls-(.-SYMBOL_NAME(sys_call_table))/4 + .long SYMBOL_NAME(sys_ni_syscall) + .endr + + .macro call_sp addr + mov.l #SYMBOL_NAME(\addr),er6 + bra SYMBOL_NAME(syscall_trampoline):8 + .endm + +SYMBOL_NAME_LABEL(sys_clone) + call_sp h8300_clone + +SYMBOL_NAME_LABEL(sys_sigsuspend) + call_sp do_sigsuspend + +SYMBOL_NAME_LABEL(sys_rt_sigsuspend) + call_sp do_rt_sigsuspend + +SYMBOL_NAME_LABEL(sys_sigreturn) + call_sp do_sigreturn + +SYMBOL_NAME_LABEL(sys_rt_sigreturn) + call_sp do_rt_sigreturn + +SYMBOL_NAME_LABEL(sys_fork) + call_sp h8300_fork + +SYMBOL_NAME_LABEL(sys_vfork) + call_sp h8300_vfork + +SYMBOL_NAME_LABEL(syscall_trampoline) + mov.l sp,er0 + jmp @er6 diff --git a/arch/h8300/kernel/time.c b/arch/h8300/kernel/time.c new file mode 100644 index 00000000000..8a600218334 --- /dev/null +++ b/arch/h8300/kernel/time.c @@ -0,0 +1,134 @@ +/* + * linux/arch/h8300/kernel/time.c + * + * Yoshinori Sato + * + * Copied/hacked from: + * + * linux/arch/m68k/kernel/time.c + * + * Copyright (C) 1991, 1992, 1995 Linus Torvalds + * + * This file contains the m68k-specific time handling details. + * Most of the stuff is located in the machine specific files. + * + * 1997-09-10 Updated NTP code according to technical memorandum Jan '96 + * "A Kernel Model for Precision Timekeeping" by Dave Mills + */ + +#include /* CONFIG_HEARTBEAT */ +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include + +#define TICK_SIZE (tick_nsec / 1000) + +u64 jiffies_64; + +EXPORT_SYMBOL(jiffies_64); + +/* + * timer_interrupt() needs to keep up the real-time clock, + * as well as call the "do_timer()" routine every clocktick + */ +static void timer_interrupt(int irq, void *dummy, struct pt_regs * regs) +{ + /* may need to kick the hardware timer */ + platform_timer_eoi(); + + do_timer(regs); +#ifndef CONFIG_SMP + update_process_times(user_mode(regs)); +#endif + profile_tick(CPU_PROFILING, regs); +} + +void time_init(void) +{ + unsigned int year, mon, day, hour, min, sec; + + /* FIX by dqg : Set to zero for platforms that don't have tod */ + /* without this time is undefined and can overflow time_t, causing */ + /* very stange errors */ + year = 1980; + mon = day = 1; + hour = min = sec = 0; + platform_gettod (&year, &mon, &day, &hour, &min, &sec); + + if ((year += 1900) < 1970) + year += 100; + xtime.tv_sec = mktime(year, mon, day, hour, min, sec); + xtime.tv_nsec = 0; + + platform_timer_setup(timer_interrupt); +} + +/* + * This version of gettimeofday has near microsecond resolution. + */ +void do_gettimeofday(struct timeval *tv) +{ + unsigned long flags; + unsigned long usec, sec; + + read_lock_irqsave(&xtime_lock, flags); + usec = 0; + sec = xtime.tv_sec; + usec += (xtime.tv_nsec / 1000); + read_unlock_irqrestore(&xtime_lock, flags); + + while (usec >= 1000000) { + usec -= 1000000; + sec++; + } + + tv->tv_sec = sec; + tv->tv_usec = usec; +} + +EXPORT_SYMBOL(do_gettimeofday); + +int do_settimeofday(struct timespec *tv) +{ + if ((unsigned long)tv->tv_nsec >= NSEC_PER_SEC) + return -EINVAL; + + write_lock_irq(&xtime_lock); + /* This is revolting. We need to set the xtime.tv_usec + * correctly. However, the value in this location is + * is value at the last tick. + * Discover what correction gettimeofday + * would have done, and then undo it! + */ + while (tv->tv_nsec < 0) { + tv->tv_nsec += NSEC_PER_SEC; + tv->tv_sec--; + } + + xtime.tv_sec = tv->tv_sec; + xtime.tv_nsec = tv->tv_nsec; + time_adjust = 0; /* stop active adjtime() */ + time_status |= STA_UNSYNC; + time_maxerror = NTP_PHASE_LIMIT; + time_esterror = NTP_PHASE_LIMIT; + write_sequnlock_irq(&xtime_lock); + clock_was_set(); + return 0; +} + +EXPORT_SYMBOL(do_settimeofday); + +unsigned long long sched_clock(void) +{ + return (unsigned long long)jiffies * (1000000000 / HZ); + +} diff --git a/arch/h8300/kernel/traps.c b/arch/h8300/kernel/traps.c new file mode 100644 index 00000000000..300e3279ca5 --- /dev/null +++ b/arch/h8300/kernel/traps.c @@ -0,0 +1,169 @@ +/* + * linux/arch/h8300/boot/traps.c -- general exception handling code + * H8/300 support Yoshinori Sato + * + * Cloned from Linux/m68k. + * + * No original Copyright holder listed, + * Probabily original (C) Roman Zippel (assigned DJD, 1999) + * + * Copyright 1999-2000 D. Jeff Dionne, + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file COPYING in the main directory of this archive + * for more details. + */ + +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include + +/* + * this must be called very early as the kernel might + * use some instruction that are emulated on the 060 + */ + +void __init base_trap_init(void) +{ +} + +void __init trap_init (void) +{ +} + +asmlinkage void set_esp0 (unsigned long ssp) +{ + current->thread.esp0 = ssp; +} + +/* + * Generic dumping code. Used for panic and debug. + */ + +static void dump(struct pt_regs *fp) +{ + unsigned long *sp; + unsigned char *tp; + int i; + + printk("\nCURRENT PROCESS:\n\n"); + printk("COMM=%s PID=%d\n", current->comm, current->pid); + if (current->mm) { + printk("TEXT=%08x-%08x DATA=%08x-%08x BSS=%08x-%08x\n", + (int) current->mm->start_code, + (int) current->mm->end_code, + (int) current->mm->start_data, + (int) current->mm->end_data, + (int) current->mm->end_data, + (int) current->mm->brk); + printk("USER-STACK=%08x KERNEL-STACK=%08lx\n\n", + (int) current->mm->start_stack, + (int) PAGE_SIZE+(unsigned long)current); + } + + show_regs(fp); + printk("\nCODE:"); + tp = ((unsigned char *) fp->pc) - 0x20; + for (sp = (unsigned long *) tp, i = 0; (i < 0x40); i += 4) { + if ((i % 0x10) == 0) + printk("\n%08x: ", (int) (tp + i)); + printk("%08x ", (int) *sp++); + } + printk("\n"); + + printk("\nKERNEL STACK:"); + tp = ((unsigned char *) fp) - 0x40; + for (sp = (unsigned long *) tp, i = 0; (i < 0xc0); i += 4) { + if ((i % 0x10) == 0) + printk("\n%08x: ", (int) (tp + i)); + printk("%08x ", (int) *sp++); + } + printk("\n"); + if (STACK_MAGIC != *(unsigned long *)((unsigned long)current+PAGE_SIZE)) + printk("(Possibly corrupted stack page??)\n"); + + printk("\n\n"); +} + +void die_if_kernel (char *str, struct pt_regs *fp, int nr) +{ + extern int console_loglevel; + + if (!(fp->ccr & PS_S)) + return; + + console_loglevel = 15; + dump(fp); + + do_exit(SIGSEGV); +} + +extern char _start, _etext; +#define check_kernel_text(addr) \ + ((addr >= (unsigned long)(&_start)) && \ + (addr < (unsigned long)(&_etext))) + +static int kstack_depth_to_print = 24; + +void show_stack(struct task_struct *task, unsigned long *esp) +{ + unsigned long *stack, addr; + int i; + + if (esp == NULL) + esp = (unsigned long *) &esp; + + stack = esp; + + printk("Stack from %08lx:", (unsigned long)stack); + for (i = 0; i < kstack_depth_to_print; i++) { + if (((unsigned long)stack & (THREAD_SIZE - 1)) == 0) + break; + if (i % 8 == 0) + printk("\n "); + printk(" %08lx", *stack++); + } + + printk("\nCall Trace:"); + i = 0; + stack = esp; + while (((unsigned long)stack & (THREAD_SIZE - 1)) == 0) { + addr = *stack++; + /* + * If the address is either in the text segment of the + * kernel, or in the region which contains vmalloc'ed + * memory, it *may* be the address of a calling + * routine; if so, print it so that someone tracing + * down the cause of the crash will be able to figure + * out the call path that was taken. + */ + if (check_kernel_text(addr)) { + if (i % 4 == 0) + printk("\n "); + printk(" [<%08lx>]", addr); + i++; + } + } + printk("\n"); +} + +void show_trace_task(struct task_struct *tsk) +{ + show_stack(tsk,(unsigned long *)tsk->thread.esp0); +} + +void dump_stack(void) +{ + show_stack(NULL,NULL); +} + +EXPORT_SYMBOL(dump_stack); diff --git a/arch/h8300/kernel/vmlinux.lds.S b/arch/h8300/kernel/vmlinux.lds.S new file mode 100644 index 00000000000..17fa11da1e4 --- /dev/null +++ b/arch/h8300/kernel/vmlinux.lds.S @@ -0,0 +1,172 @@ +#define VMLINUX_SYMBOL(_sym_) _##_sym_ +#include +#include + +/* target memory map */ +#ifdef CONFIG_H8300H_GENERIC +#define ROMTOP 0x000000 +#define ROMSIZE 0x400000 +#define RAMTOP 0x400000 +#define RAMSIZE 0x400000 +#endif + +#ifdef CONFIG_H8300H_AKI3068NET +#define ROMTOP 0x000000 +#define ROMSIZE 0x080000 +#define RAMTOP 0x400000 +#define RAMSIZE 0x200000 +#endif + +#ifdef CONFIG_H8300H_H8MAX +#define ROMTOP 0x000000 +#define ROMSIZE 0x080000 +#define RAMTOP 0x400000 +#define RAMSIZE 0x200000 +#endif + +#ifdef CONFIG_H8300H_SIM +#define ROMTOP 0x000000 +#define ROMSIZE 0x400000 +#define RAMTOP 0x400000 +#define RAMSIZE 0x400000 +#endif + +#ifdef CONFIG_H8S_SIM +#define ROMTOP 0x000000 +#define ROMSIZE 0x400000 +#define RAMTOP 0x400000 +#define RAMSIZE 0x800000 +#endif + +#ifdef CONFIG_H8S_EDOSK2674 +#define ROMTOP 0x000000 +#define ROMSIZE 0x400000 +#define RAMTOP 0x400000 +#define RAMSIZE 0x800000 +#endif + +#if defined(CONFIG_H8300H_SIM) || defined(CONFIG_H8S_SIM) +INPUT(romfs.o) +#endif + +_jiffies = _jiffies_64 + 4; + +ENTRY(__start) + +SECTIONS +{ +#if defined(CONFIG_ROMKERNEL) + . = ROMTOP; + .vectors : + { + __vector = . ; + *(.vectors*) + } +#else + . = RAMTOP; + .bootvec : + { + *(.bootvec) + } +#endif + .text : + { +#if defined(CONFIG_ROMKERNEL) + *(.int_redirect) +#endif + __stext = . ; + *(.text) + SCHED_TEXT + LOCK_TEXT + __etext = . ; + . = ALIGN(16); /* Exception table */ + ___start___ex_table = .; + *(__ex_table) + ___stop___ex_table = .; + } + + RODATA +#if defined(CONFIG_ROMKERNEL) + SECURITY_INIT +#endif + ROEND = .; +#if defined(CONFIG_ROMKERNEL) + . = RAMTOP; + .data : AT(ROEND) +#else + .data : +#endif + { + __sdata = . ; + ___data_start = . ; + + . = ALIGN(0x2000) ; + *(.data.init_task) + . = ALIGN(0x4) ; + *(.data) + . = ALIGN(0x4) ; + *(.data.*) + + . = ALIGN(0x4) ; + ___init_begin = .; + __sinittext = .; + *(.init.text) + __einittext = .; + *(.init.data) + . = ALIGN(0x4) ; + ___setup_start = .; + *(.init.setup) + . = ALIGN(0x4) ; + ___setup_end = .; + ___initcall_start = .; + *(.initcall1.init) + *(.initcall2.init) + *(.initcall3.init) + *(.initcall4.init) + *(.initcall5.init) + *(.initcall6.init) + *(.initcall7.init) + ___initcall_end = .; + ___con_initcall_start = .; + *(.con_initcall.init) + ___con_initcall_end = .; + *(.exit.text) + *(.exit.data) + . = ALIGN(4); + ___initramfs_start = .; + *(.init.ramfs) + ___initramfs_end = .; + . = ALIGN(0x4) ; + ___init_end = .; + __edata = . ; + } +#if defined(CONFIG_RAMKERNEL) + SECURITY_INIT +#endif + __begin_data = LOADADDR(.data); + .bss : + { + . = ALIGN(0x4) ; + __sbss = . ; + *(.bss*) + . = ALIGN(0x4) ; + *(COMMON) + . = ALIGN(0x4) ; + __ebss = . ; + __end = . ; + __ramstart = .; + } + /DISCARD/ : { + *(.exitcall.exit) + } + .romfs : + { + *(.romfs*) + } + . = RAMTOP+RAMSIZE; + .dummy : + { + COMMAND_START = . - 0x200 ; + __ramend = . ; + } +} -- cgit v1.2.3