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-rw-r--r--arch/h8300/Kconfig3
-rw-r--r--arch/h8300/boot/compressed/Makefile11
-rw-r--r--arch/h8300/boot/compressed/misc.c6
-rw-r--r--arch/h8300/boot/compressed/vmlinux.lds4
-rw-r--r--arch/h8300/include/asm/io.h8
-rw-r--r--arch/h8300/include/asm/kgdb.h45
-rw-r--r--arch/h8300/include/asm/traps.h2
-rw-r--r--arch/h8300/kernel/Makefile2
-rw-r--r--arch/h8300/kernel/entry.S19
-rw-r--r--arch/h8300/kernel/kgdb.c135
-rw-r--r--arch/h8300/kernel/signal.c8
-rw-r--r--arch/h8300/kernel/traps.c20
12 files changed, 238 insertions, 25 deletions
diff --git a/arch/h8300/Kconfig b/arch/h8300/Kconfig
index 8c7c82586da0..986ea84caaed 100644
--- a/arch/h8300/Kconfig
+++ b/arch/h8300/Kconfig
@@ -17,6 +17,9 @@ config H8300
select HAVE_MEMBLOCK
select CLKSRC_OF
select H8300_TMR8
+ select HAVE_KERNEL_GZIP
+ select HAVE_KERNEL_LZO
+ select HAVE_ARCH_KGDB
config RWSEM_GENERIC_SPINLOCK
def_bool y
diff --git a/arch/h8300/boot/compressed/Makefile b/arch/h8300/boot/compressed/Makefile
index d7bc3fa7f2c6..7643633f1330 100644
--- a/arch/h8300/boot/compressed/Makefile
+++ b/arch/h8300/boot/compressed/Makefile
@@ -28,11 +28,16 @@ $(obj)/vmlinux: $(OBJECTS) $(obj)/piggy.o $(LIBGCC) FORCE
$(obj)/vmlinux.bin: vmlinux FORCE
$(call if_changed,objcopy)
-$(obj)/vmlinux.bin.gz: $(obj)/vmlinux.bin FORCE
- $(call if_changed,gzip)
+suffix-$(CONFIG_KERNEL_GZIP) := gzip
+suffix-$(CONFIG_KERNEL_LZO) := lzo
+
+$(obj)/vmlinux.bin.$(suffix-y): $(obj)/vmlinux.bin FORCE
+ $(call if_changed,$(suffix-y))
LDFLAGS_piggy.o := -r --format binary --oformat elf32-h8300-linux -T
OBJCOPYFLAGS := -O binary
-$(obj)/piggy.o: $(obj)/vmlinux.scr $(obj)/vmlinux.bin.gz FORCE
+$(obj)/piggy.o: $(obj)/vmlinux.scr $(obj)/vmlinux.bin.$(suffix-y) FORCE
$(call if_changed,ld)
+
+CFLAGS_misc.o = -O0
diff --git a/arch/h8300/boot/compressed/misc.c b/arch/h8300/boot/compressed/misc.c
index 6029c5351895..9f64fe8f29ff 100644
--- a/arch/h8300/boot/compressed/misc.c
+++ b/arch/h8300/boot/compressed/misc.c
@@ -32,7 +32,13 @@ extern char output[];
#define HEAP_SIZE 0x10000
+#ifdef CONFIG_KERNEL_GZIP
#include "../../../../lib/decompress_inflate.c"
+#endif
+
+#ifdef CONFIG_KERNEL_LZO
+#include "../../../../lib/decompress_unlzo.c"
+#endif
void *memset(void *s, int c, size_t n)
{
diff --git a/arch/h8300/boot/compressed/vmlinux.lds b/arch/h8300/boot/compressed/vmlinux.lds
index 44fd209db88a..ad848a72fd3f 100644
--- a/arch/h8300/boot/compressed/vmlinux.lds
+++ b/arch/h8300/boot/compressed/vmlinux.lds
@@ -13,16 +13,18 @@ SECTIONS
{
*(.rodata)
}
+ . = ALIGN(0x4) ;
.data :
{
+ . = ALIGN(0x4) ;
__sdata = . ;
___data_start = . ;
*(.data.*)
}
+ . = ALIGN(0x4) ;
.bss :
{
- . = ALIGN(0x4) ;
__sbss = . ;
*(.bss*)
. = ALIGN(0x4) ;
diff --git a/arch/h8300/include/asm/io.h b/arch/h8300/include/asm/io.h
index f0e14f3a800d..2e221c5f0203 100644
--- a/arch/h8300/include/asm/io.h
+++ b/arch/h8300/include/asm/io.h
@@ -44,17 +44,17 @@ static inline void __raw_writel(u32 b, const volatile void __iomem *addr)
static inline void ctrl_bclr(int b, void __iomem *addr)
{
if (__builtin_constant_p(b))
- __asm__("bclr %1,%0" : "+WU"(*addr): "i"(b));
+ __asm__("bclr %1,%0" : "+WU"(*(u8 *)addr): "i"(b));
else
- __asm__("bclr %w1,%0" : "+WU"(*addr): "r"(b));
+ __asm__("bclr %w1,%0" : "+WU"(*(u8 *)addr): "r"(b));
}
static inline void ctrl_bset(int b, void __iomem *addr)
{
if (__builtin_constant_p(b))
- __asm__("bset %1,%0" : "+WU"(*addr): "i"(b));
+ __asm__("bset %1,%0" : "+WU"(*(u8 *)addr): "i"(b));
else
- __asm__("bset %w1,%0" : "+WU"(*addr): "r"(b));
+ __asm__("bset %w1,%0" : "+WU"(*(u8 *)addr): "r"(b));
}
#include <asm-generic/io.h>
diff --git a/arch/h8300/include/asm/kgdb.h b/arch/h8300/include/asm/kgdb.h
new file mode 100644
index 000000000000..726ff8fdfc18
--- /dev/null
+++ b/arch/h8300/include/asm/kgdb.h
@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2015 Yoshinori Sato <ysato@users.sourceforge.jp>
+ *
+ * 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.
+ */
+
+#ifndef _ASM_H8300_KGDB_H
+#define _ASM_H8300_KGDB_H
+
+#define CACHE_FLUSH_IS_SAFE 1
+#define BUFMAX 2048
+
+enum regnames {
+ GDB_ER0, GDB_ER1, GDB_ER2, GDB_ER3,
+ GDB_ER4, GDB_ER5, GDB_ER6, GDB_SP,
+ GDB_CCR, GDB_PC,
+ GDB_CYCLLE,
+#if defined(CONFIG_CPU_H8S)
+ GDB_EXR,
+#endif
+ GDB_TICK, GDB_INST,
+#if defined(CONFIG_CPU_H8S)
+ GDB_MACH, GDB_MACL,
+#endif
+ /* do not change the last entry or anything below! */
+ GDB_NUMREGBYTES, /* number of registers */
+};
+
+#define GDB_SIZEOF_REG sizeof(u32)
+#if defined(CONFIG_CPU_H8300H)
+#define DBG_MAX_REG_NUM (13)
+#elif defined(CONFIG_CPU_H8S)
+#define DBG_MAX_REG_NUM (14)
+#endif
+#define NUMREGBYTES (DBG_MAX_REG_NUM * GDB_SIZEOF_REG)
+
+#define BREAK_INSTR_SIZE 2
+static inline void arch_kgdb_breakpoint(void)
+{
+ __asm__ __volatile__("trapa #2");
+}
+
+#endif /* _ASM_H8300_KGDB_H */
diff --git a/arch/h8300/include/asm/traps.h b/arch/h8300/include/asm/traps.h
index aa34e75fd767..15e701130b27 100644
--- a/arch/h8300/include/asm/traps.h
+++ b/arch/h8300/include/asm/traps.h
@@ -36,6 +36,6 @@ extern unsigned long *_interrupt_redirect_table;
extern char _start, _etext;
#define check_kernel_text(addr) \
((addr >= (unsigned long)(&_start)) && \
- (addr < (unsigned long)(&_etext)))
+ (addr < (unsigned long)(&_etext)) && !(addr & 1))
#endif /* _H8300_TRAPS_H */
diff --git a/arch/h8300/kernel/Makefile b/arch/h8300/kernel/Makefile
index 5bc33f2fcc08..253f8e322ecc 100644
--- a/arch/h8300/kernel/Makefile
+++ b/arch/h8300/kernel/Makefile
@@ -17,3 +17,5 @@ obj-$(CONFIG_H8S_SIM) += sim-console.o
obj-$(CONFIG_CPU_H8300H) += ptrace_h.o
obj-$(CONFIG_CPU_H8S) += ptrace_s.o
+
+obj-$(CONFIG_KGDB) += kgdb.o
diff --git a/arch/h8300/kernel/entry.S b/arch/h8300/kernel/entry.S
index 797dfa8ddeb2..4f67d4b350d5 100644
--- a/arch/h8300/kernel/entry.S
+++ b/arch/h8300/kernel/entry.S
@@ -188,7 +188,11 @@ _interrupt_redirect_table:
jsr @_interrupt_entry /* NMI */
jmp @_system_call /* TRAPA #0 (System call) */
.long 0
+#if defined(CONFIG_KGDB)
+ jmp @_kgdb_trap
+#else
.long 0
+#endif
jmp @_trace_break /* TRAPA #3 (breakpoint) */
.rept INTERRUPTS-12
jsr @_interrupt_entry
@@ -242,6 +246,7 @@ _system_call:
/* save top of frame */
mov.l sp,er0
jsr @set_esp0
+ andc #0x3f,ccr
mov.l sp,er2
and.w #0xe000,r2
mov.l @(TI_FLAGS:16,er2),er2
@@ -405,6 +410,20 @@ _nmi:
mov.l @sp+, er0
jmp @_interrupt_entry
+#if defined(CONFIG_KGDB)
+_kgdb_trap:
+ subs #4,sp
+ SAVE_ALL
+ mov.l sp,er0
+ add.l #LRET,er0
+ mov.l er0,@(LSP,sp)
+ jsr @set_esp0
+ mov.l sp,er0
+ subs #4,er0
+ jsr @h8300_kgdb_trap
+ jmp @ret_from_exception
+#endif
+
.section .bss
_sw_ksp:
.space 4
diff --git a/arch/h8300/kernel/kgdb.c b/arch/h8300/kernel/kgdb.c
new file mode 100644
index 000000000000..602e478afbd5
--- /dev/null
+++ b/arch/h8300/kernel/kgdb.c
@@ -0,0 +1,135 @@
+/*
+ * H8/300 KGDB support
+ *
+ * Copyright (C) 2015 Yoshinori Sato <ysato@users.sourceforge.jp>
+ *
+ * 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 <linux/ptrace.h>
+#include <linux/kgdb.h>
+#include <linux/kdebug.h>
+#include <linux/io.h>
+
+struct dbg_reg_def_t dbg_reg_def[DBG_MAX_REG_NUM] = {
+ { "er0", GDB_SIZEOF_REG, offsetof(struct pt_regs, er0) },
+ { "er1", GDB_SIZEOF_REG, offsetof(struct pt_regs, er1) },
+ { "er2", GDB_SIZEOF_REG, offsetof(struct pt_regs, er2) },
+ { "er3", GDB_SIZEOF_REG, offsetof(struct pt_regs, er3) },
+ { "er4", GDB_SIZEOF_REG, offsetof(struct pt_regs, er4) },
+ { "er5", GDB_SIZEOF_REG, offsetof(struct pt_regs, er5) },
+ { "er6", GDB_SIZEOF_REG, offsetof(struct pt_regs, er6) },
+ { "sp", GDB_SIZEOF_REG, offsetof(struct pt_regs, sp) },
+ { "ccr", GDB_SIZEOF_REG, offsetof(struct pt_regs, ccr) },
+ { "pc", GDB_SIZEOF_REG, offsetof(struct pt_regs, pc) },
+ { "cycles", GDB_SIZEOF_REG, -1 },
+#if defined(CONFIG_CPU_H8S)
+ { "exr", GDB_SIZEOF_REG, offsetof(struct pt_regs, exr) },
+#endif
+ { "tick", GDB_SIZEOF_REG, -1 },
+ { "inst", GDB_SIZEOF_REG, -1 },
+};
+
+char *dbg_get_reg(int regno, void *mem, struct pt_regs *regs)
+{
+ if (regno >= DBG_MAX_REG_NUM || regno < 0)
+ return NULL;
+
+ switch (regno) {
+ case GDB_CCR:
+#if defined(CONFIG_CPU_H8S)
+ case GDB_EXR:
+#endif
+ *(u32 *)mem = *(u16 *)((void *)regs +
+ dbg_reg_def[regno].offset);
+ break;
+ default:
+ if (dbg_reg_def[regno].offset >= 0)
+ memcpy(mem, (void *)regs + dbg_reg_def[regno].offset,
+ dbg_reg_def[regno].size);
+ else
+ memset(mem, 0, dbg_reg_def[regno].size);
+ break;
+ }
+ return dbg_reg_def[regno].name;
+}
+
+int dbg_set_reg(int regno, void *mem, struct pt_regs *regs)
+{
+ if (regno >= DBG_MAX_REG_NUM || regno < 0)
+ return -EINVAL;
+
+ switch (regno) {
+ case GDB_CCR:
+#if defined(CONFIG_CPU_H8S)
+ case GDB_EXR:
+#endif
+ *(u16 *)((void *)regs +
+ dbg_reg_def[regno].offset) = *(u32 *)mem;
+ break;
+ default:
+ memcpy((void *)regs + dbg_reg_def[regno].offset, mem,
+ dbg_reg_def[regno].size);
+ }
+ return 0;
+}
+
+asmlinkage void h8300_kgdb_trap(struct pt_regs *regs)
+{
+ regs->pc &= 0x00ffffff;
+ if (kgdb_handle_exception(10, SIGTRAP, 0, regs))
+ return;
+ if (*(u16 *)(regs->pc) == *(u16 *)&arch_kgdb_ops.gdb_bpt_instr)
+ regs->pc += BREAK_INSTR_SIZE;
+ regs->pc |= regs->ccr << 24;
+}
+
+void sleeping_thread_to_gdb_regs(unsigned long *gdb_regs, struct task_struct *p)
+{
+ memset((char *)gdb_regs, 0, NUMREGBYTES);
+ gdb_regs[GDB_SP] = p->thread.ksp;
+ gdb_regs[GDB_PC] = KSTK_EIP(p);
+}
+
+void kgdb_arch_set_pc(struct pt_regs *regs, unsigned long pc)
+{
+ regs->pc = pc;
+}
+
+int kgdb_arch_handle_exception(int vector, int signo, int err_code,
+ char *remcom_in_buffer, char *remcom_out_buffer,
+ struct pt_regs *regs)
+{
+ char *ptr;
+ unsigned long addr;
+
+ switch (remcom_in_buffer[0]) {
+ case 's':
+ case 'c':
+ /* handle the optional parameters */
+ ptr = &remcom_in_buffer[1];
+ if (kgdb_hex2long(&ptr, &addr))
+ regs->pc = addr;
+
+ return 0;
+ }
+
+ return -1; /* this means that we do not want to exit from the handler */
+}
+
+int kgdb_arch_init(void)
+{
+ return 0;
+}
+
+void kgdb_arch_exit(void)
+{
+ /* Nothing to do */
+}
+
+const struct kgdb_arch arch_kgdb_ops = {
+ /* Breakpoint instruction: trapa #2 */
+ .gdb_bpt_instr = { 0x57, 0x20 },
+};
diff --git a/arch/h8300/kernel/signal.c b/arch/h8300/kernel/signal.c
index 380fffd081b2..ad1f81f574e5 100644
--- a/arch/h8300/kernel/signal.c
+++ b/arch/h8300/kernel/signal.c
@@ -95,7 +95,7 @@ restore_sigcontext(struct sigcontext *usc, int *pd0)
regs->ccr |= ccr;
regs->orig_er0 = -1; /* disable syscall checks */
err |= __get_user(usp, &usc->sc_usp);
- wrusp(usp);
+ regs->sp = usp;
err |= __get_user(er0, &usc->sc_er0);
*pd0 = er0;
@@ -180,7 +180,7 @@ static int setup_rt_frame(struct ksignal *ksig, sigset_t *set,
return -EFAULT;
/* Set up to return from userspace. */
- ret = frame->retcode;
+ ret = (unsigned char *)&frame->retcode;
if (ksig->ka.sa.sa_flags & SA_RESTORER)
ret = (unsigned char *)(ksig->ka.sa.sa_restorer);
else {
@@ -196,8 +196,8 @@ static int setup_rt_frame(struct ksignal *ksig, sigset_t *set,
return -EFAULT;
/* Set up registers for signal handler */
- wrusp((unsigned long) frame);
- regs->pc = (unsigned long) ksig->ka.sa.sa_handler;
+ regs->sp = (unsigned long)frame;
+ regs->pc = (unsigned long)ksig->ka.sa.sa_handler;
regs->er0 = ksig->sig;
regs->er1 = (unsigned long)&(frame->info);
regs->er2 = (unsigned long)&frame->uc;
diff --git a/arch/h8300/kernel/traps.c b/arch/h8300/kernel/traps.c
index 1b2d7cdd6591..044a36125846 100644
--- a/arch/h8300/kernel/traps.c
+++ b/arch/h8300/kernel/traps.c
@@ -125,17 +125,18 @@ void show_stack(struct task_struct *task, unsigned long *esp)
pr_info("Stack from %08lx:", (unsigned long)stack);
for (i = 0; i < kstack_depth_to_print; i++) {
- if (((unsigned long)stack & (THREAD_SIZE - 1)) == 0)
+ if (((unsigned long)stack & (THREAD_SIZE - 1)) >=
+ THREAD_SIZE-4)
break;
if (i % 8 == 0)
- pr_info("\n ");
- pr_info(" %08lx", *stack++);
+ pr_info(" ");
+ pr_cont(" %08lx", *stack++);
}
- pr_info("\nCall Trace:");
+ pr_info("\nCall Trace:\n");
i = 0;
stack = esp;
- while (((unsigned long)stack & (THREAD_SIZE - 1)) != 0) {
+ while (((unsigned long)stack & (THREAD_SIZE - 1)) < THREAD_SIZE-4) {
addr = *stack++;
/*
* If the address is either in the text segment of the
@@ -147,15 +148,10 @@ void show_stack(struct task_struct *task, unsigned long *esp)
*/
if (check_kernel_text(addr)) {
if (i % 4 == 0)
- pr_info("\n ");
- pr_info(" [<%08lx>]", addr);
+ pr_info(" ");
+ pr_cont(" [<%08lx>]", addr);
i++;
}
}
pr_info("\n");
}
-
-void show_trace_task(struct task_struct *tsk)
-{
- show_stack(tsk, (unsigned long *)tsk->thread.esp0);
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-24 20:56:28 +0000