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Diffstat (limited to 'gcc/config/sh/linux.h')
-rw-r--r--gcc/config/sh/linux.h195
1 files changed, 195 insertions, 0 deletions
diff --git a/gcc/config/sh/linux.h b/gcc/config/sh/linux.h
index 1a3948386fc..c4f6171a5d0 100644
--- a/gcc/config/sh/linux.h
+++ b/gcc/config/sh/linux.h
@@ -23,6 +23,22 @@ Boston, MA 02111-1307, USA. */
#undef TARGET_VERSION
#define TARGET_VERSION fputs (" (SH GNU/Linux with ELF)", stderr);
+/* We're not SYSVR4, not having /usr/ccs */
+#undef MD_EXEC_PREFIX
+#undef MD_STARTFILE_PREFIX
+
+/* This was defined in linux.h. Define it here also. */
+#define HANDLE_PRAGMA_PACK_PUSH_POP
+
+/* Enable DWARF 2 exceptions. */
+#undef DWARF2_UNWIND_INFO
+#define DWARF2_UNWIND_INFO 1
+
+#define ASM_PREFERRED_EH_DATA_FORMAT(CODE, GLOBAL) \
+ (flag_pic \
+ ? ((GLOBAL) ? DW_EH_PE_indirect : 0) | DW_EH_PE_pcrel | DW_EH_PE_sdata4 \
+ : DW_EH_PE_absptr)
+
#undef SUBTARGET_CPP_SPEC
#define SUBTARGET_CPP_SPEC "\
%{posix:-D_POSIX_SOURCE} \
@@ -55,9 +71,15 @@ do { \
#undef LIB_SPEC
#define LIB_SPEC \
"%{shared: -lc} \
+ %{!static:-rpath-link %R/lib:%R/usr/lib} \
%{!shared: %{pthread:-lthread} \
%{profile:-lc_p} %{!profile: -lc}}"
+#if defined(HAVE_LD_EH_FRAME_HDR)
+#undef LINK_EH_SPEC
+#define LINK_EH_SPEC "%{!static:--eh-frame-hdr} "
+#endif
+
#undef STARTFILE_SPEC
#define STARTFILE_SPEC \
"%{!shared: \
@@ -65,3 +87,176 @@ do { \
%{!p:%{profile:gcrt1.o%s} \
%{!profile:crt1.o%s}}}} \
crti.o%s %{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}"
+
+/* Output assembler code to STREAM to call the profiler. */
+
+#undef FUNCTION_PROFILER
+#define FUNCTION_PROFILER(STREAM,LABELNO) \
+ do { \
+ if (flag_pic) \
+ { \
+ fprintf (STREAM, "\tmov.l\t3f,r1\n"); \
+ fprintf (STREAM, "\tmova\t3f,r0\n"); \
+ fprintf (STREAM, "\tadd\tr1,r0\n"); \
+ fprintf (STREAM, "\tmov.l\t1f,r1\n"); \
+ fprintf (STREAM, "\tmov.l\t@(r0,r1),r1\n"); \
+ } \
+ else \
+ fprintf (STREAM, "\tmov.l\t1f,r1\n"); \
+ fprintf (STREAM, "\tsts.l\tpr,@-r15\n"); \
+ fprintf (STREAM, "\tmova\t2f,r0\n"); \
+ fprintf (STREAM, "\tjmp\t@r1\n"); \
+ fprintf (STREAM, "\tlds\tr0,pr\n"); \
+ fprintf (STREAM, "\t.align\t2\n"); \
+ if (flag_pic) \
+ { \
+ fprintf (STREAM, "1:\t.long\tmcount@GOT\n"); \
+ fprintf (STREAM, "3:\t.long\t_GLOBAL_OFFSET_TABLE_\n"); \
+ } \
+ else \
+ fprintf (STREAM, "1:\t.long\tmcount\n"); \
+ fprintf (STREAM, "2:\tlds.l\t@r15+,pr\n"); \
+ } while (0)
+
+/* Do code reading to identify a signal frame, and set the frame
+ state data appropriately. See unwind-dw2.c for the structs. */
+
+#ifdef IN_LIBGCC2
+#include <signal.h>
+#include <sys/ucontext.h>
+#include "insn-constants.h"
+
+# if defined (__SH5__)
+#define SH_DWARF_FRAME_GP0 0
+#define SH_DWARF_FRAME_FP0 (__SH5__ == 32 ? 245 : 77)
+#define SH_DWARF_FRAME_XD0 289
+#define SH_DWARF_FRAME_BT0 68
+#define SH_DWARF_FRAME_PR 241
+#define SH_DWARF_FRAME_PR_MEDIA 18
+#define SH_DWARF_FRAME_GBR 238
+#define SH_DWARF_FRAME_MACH 239
+#define SH_DWARF_FRAME_MACL 240
+#define SH_DWARF_FRAME_PC 64
+#define SH_DWARF_FRAME_SR 65
+#define SH_DWARF_FRAME_FPUL 244
+#define SH_DWARF_FRAME_FPSCR 243
+#else
+#define SH_DWARF_FRAME_GP0 0
+#define SH_DWARF_FRAME_FP0 25
+#define SH_DWARF_FRAME_XD0 87
+#define SH_DWARF_FRAME_PR 17
+#define SH_DWARF_FRAME_GBR 19
+#define SH_DWARF_FRAME_MACH 20
+#define SH_DWARF_FRAME_MACL 21
+#define SH_DWARF_FRAME_PC 16
+#define SH_DWARF_FRAME_SR 22
+#define SH_DWARF_FRAME_FPUL 23
+#define SH_DWARF_FRAME_FPSCR 24
+#endif /* defined (__SH5__) */
+
+#if defined (__SH5__) && __SH5__ != 32
+/* MD_FALLBACK_FRAME_STATE_FOR is not yet defiened for SHMEDIA. */
+#else /* defined (__SH5__) && __SH5__ != 32 */
+
+#if defined (__SH3E__) || defined (__SH4__) || defined (__SH5__)
+#define SH_FALLBACK_FRAME_FLOAT_STATE(SC, FS, CFA) \
+ do { \
+ int i_, r_; \
+ \
+ r_ = SH_DWARF_FRAME_FP0; \
+ for (i_ = 0; i_ < 16; i_++) \
+ { \
+ (FS)->regs.reg[r_+i_].how = REG_SAVED_OFFSET; \
+ (FS)->regs.reg[r_+i_].loc.offset \
+ = (long)&((SC)->sc_fpregs[i_]) - (CFA); \
+ } \
+ \
+ r_ = SH_DWARF_FRAME_XD0 ; \
+ for (i_ = 0; i_ < 8; i_++) \
+ { \
+ (FS)->regs.reg[i_].how = REG_SAVED_OFFSET; \
+ (FS)->regs.reg[i_].loc.offset \
+ = (long)&((SC)->sc_xfpregs[2*i_]) - (CFA); \
+ } \
+ \
+ (FS)->regs.reg[SH_DWARF_FRAME_FPUL].how = REG_SAVED_OFFSET; \
+ (FS)->regs.reg[SH_DWARF_FRAME_FPUL].loc.offset \
+ = (long)&((SC)->sc_fpul) - (CFA); \
+ (FS)->regs.reg[SH_DWARF_FRAME_FPSCR].how = REG_SAVED_OFFSET; \
+ (FS)->regs.reg[SH_DWARF_FRAME_FPSCR].loc.offset \
+ = (long)&((SC)->sc_fpscr) - (CFA); \
+ } while (0)
+
+#else
+#define SH_FALLBACK_FRAME_FLOAT_STATE(SC, FS, CFA)
+#endif
+
+#define MD_FALLBACK_FRAME_STATE_FOR(CONTEXT, FS, SUCCESS) \
+ do { \
+ unsigned char *pc_ = (CONTEXT)->ra; \
+ struct sigcontext *sc_; \
+ long new_cfa_; \
+ int i_; \
+ \
+ /* mov.w 1f,r3; trapa #0x10; 1: .short 0x77 (sigreturn) */ \
+ /* mov.w 1f,r3; trapa #0x10; 1: .short 0xad (rt_sigreturn) */ \
+ if ((*(unsigned short *) (pc_+0) == 0x9300) \
+ && (*(unsigned short *) (pc_+2) == 0xc310) \
+ && (*(unsigned short *) (pc_+4) == 0x0077)) \
+ sc_ = (CONTEXT)->cfa; \
+ else if ((*(unsigned short *) (pc_+0) == 0x9300) \
+ && (*(unsigned short *) (pc_+2) == 0xc310) \
+ && (*(unsigned short *) (pc_+4) == 0x00ad)) \
+ { \
+ struct rt_sigframe { \
+ struct siginfo info; \
+ struct ucontext uc; \
+ } *rt_ = (CONTEXT)->cfa; \
+ sc_ = (struct sigcontext *) &rt_->uc.uc_mcontext; \
+ } \
+ else \
+ break; \
+ \
+ new_cfa_ = sc_->sc_regs[15]; \
+ (FS)->cfa_how = CFA_REG_OFFSET; \
+ (FS)->cfa_reg = 15; \
+ (FS)->cfa_offset = new_cfa_ - (long) (CONTEXT)->cfa; \
+ \
+ for (i_ = 0; i_ < 15; i_++) \
+ { \
+ (FS)->regs.reg[i_].how = REG_SAVED_OFFSET; \
+ (FS)->regs.reg[i_].loc.offset \
+ = (long)&(sc_->sc_regs[i_]) - new_cfa_; \
+ } \
+ \
+ (FS)->regs.reg[SH_DWARF_FRAME_PR].how = REG_SAVED_OFFSET; \
+ (FS)->regs.reg[SH_DWARF_FRAME_PR].loc.offset \
+ = (long)&(sc_->sc_pr) - new_cfa_; \
+ (FS)->regs.reg[SH_DWARF_FRAME_SR].how = REG_SAVED_OFFSET; \
+ (FS)->regs.reg[SH_DWARF_FRAME_SR].loc.offset \
+ = (long)&(sc_->sc_sr) - new_cfa_; \
+ (FS)->regs.reg[SH_DWARF_FRAME_GBR].how = REG_SAVED_OFFSET; \
+ (FS)->regs.reg[SH_DWARF_FRAME_GBR].loc.offset \
+ = (long)&(sc_->sc_gbr) - new_cfa_; \
+ (FS)->regs.reg[SH_DWARF_FRAME_MACH].how = REG_SAVED_OFFSET; \
+ (FS)->regs.reg[SH_DWARF_FRAME_MACH].loc.offset \
+ = (long)&(sc_->sc_mach) - new_cfa_; \
+ (FS)->regs.reg[SH_DWARF_FRAME_MACL].how = REG_SAVED_OFFSET; \
+ (FS)->regs.reg[SH_DWARF_FRAME_MACL].loc.offset \
+ = (long)&(sc_->sc_macl) - new_cfa_; \
+ \
+ SH_FALLBACK_FRAME_FLOAT_STATE(sc_, (FS), new_cfa_); \
+ \
+ /* The unwinder expects the PC to point to the following insn, \
+ whereas the kernel returns the address of the actual \
+ faulting insn. */ \
+ sc_->sc_pc += 2; \
+ (FS)->regs.reg[SH_DWARF_FRAME_PC].how = REG_SAVED_OFFSET; \
+ (FS)->regs.reg[SH_DWARF_FRAME_PC].loc.offset \
+ = (long)&(sc_->sc_pc) - new_cfa_; \
+ (FS)->retaddr_column = SH_DWARF_FRAME_PC; \
+ goto SUCCESS; \
+ } while (0)
+
+#endif /* defined (__SH5__) && __SH5__ != 32 */
+#endif /* IN_LIBGCC2 */
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