linux.h (MD_FALLBACK_FRAME_STATE_FOR): Define.
2002-04-19 David S. Miller <davem@redhat.com> * config/sparc/linux.h (MD_FALLBACK_FRAME_STATE_FOR): Define. * config/sparc/linux64.h (MD_FALLBACK_FRAME_STATE_FOR): Likewise. From-SVN: r52546
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David S. Miller
David S. Miller
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1936721505
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db430d2664
@ -1,3 +1,8 @@
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2002-04-19 David S. Miller <davem@redhat.com>
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* config/sparc/linux.h (MD_FALLBACK_FRAME_STATE_FOR): Define.
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* config/sparc/linux64.h (MD_FALLBACK_FRAME_STATE_FOR): Likewise.
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2002-04-19 Jakub Jelinek <jakub@redhat.com>
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PR optimization/3756
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@ -257,3 +257,72 @@ do { \
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/* We use GNU ld so undefine this so that attribute((init_priority)) works. */
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#undef CTORS_SECTION_ASM_OP
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#undef DTORS_SECTION_ASM_OP
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/* Do code reading to identify a signal frame, and set the frame
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state data appropriately. See unwind-dw2.c for the structs. */
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#ifdef IN_LIBGCC2
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#include <signal.h>
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#include <sys/ucontext.h>
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#endif
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#define MD_FALLBACK_FRAME_STATE_FOR(CONTEXT, FS, SUCCESS) \
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do { \
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unsigned int *pc_ = (CONTEXT)->ra; \
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int new_cfa_, i_, oldstyle_; \
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int regs_off_, fpu_save_off_; \
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int fpu_save_, this_cfa_; \
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\
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if (pc_[1] != 0x91d02010) /* ta 0x10 */ \
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break; \
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if (pc_[0] == 0x821020d8) /* mov NR_sigreturn, %g1 */ \
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oldstyle_ = 1; \
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else if (pc_[0] == 0x82102065) /* mov NR_rt_sigreturn, %g1 */ \
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oldstyle_ = 0; \
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else \
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break; \
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if (oldstyle_) \
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{ \
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regs_off_ = 96; \
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fpu_save_off_ = regs_off_ + (4 * 4) + (16 * 4); \
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} \
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else \
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{ \
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regs_off_ = 96 + 128; \
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fpu_save_off_ = regs_off_ + (4 * 4) + (16 * 4) + (2 * 4); \
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} \
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this_cfa_ = (int) (CONTEXT)->cfa; \
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new_cfa_ = *(int *)(((CONTEXT)->cfa) + (regs_off_+(4*4)+(14 * 4))); \
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fpu_save_ = *(int *)((this_cfa_) + (fpu_save_off_)); \
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(FS)->cfa_how = CFA_REG_OFFSET; \
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(FS)->cfa_reg = 14; \
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(FS)->cfa_offset = new_cfa_ - (int) (CONTEXT)->cfa; \
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for (i_ = 1; i_ < 16; ++i_) \
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{ \
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if (i_ == 14) \
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continue; \
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(FS)->regs.reg[i_].how = REG_SAVED_OFFSET; \
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(FS)->regs.reg[i_].loc.offset = \
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this_cfa_ + (regs_off_+(4 * 4)+(i_ * 4)) - new_cfa_; \
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} \
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for (i_ = 0; i_ < 16; ++i_) \
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{ \
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(FS)->regs.reg[i_ + 16].how = REG_SAVED_OFFSET; \
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(FS)->regs.reg[i_ + 16].loc.offset = \
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this_cfa_ + (i_ * 4) - new_cfa_; \
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} \
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if (fpu_save_) \
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{ \
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for (i_ = 0; i_ < 32; ++i_) \
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{ \
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(FS)->regs.reg[i_ + 32].how = REG_SAVED_OFFSET; \
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(FS)->regs.reg[i_ + 32].loc.offset = \
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(fpu_save_ + (i_ * 4)) - new_cfa_; \
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} \
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} \
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/* Stick return address into %g0, same trick Alpha uses. */ \
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(FS)->regs.reg[0].how = REG_SAVED_OFFSET; \
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(FS)->regs.reg[0].loc.offset = this_cfa_+(regs_off_+4)-new_cfa_; \
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(FS)->retaddr_column = 0; \
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goto SUCCESS; \
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} while (0)
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@ -377,3 +377,128 @@ do { \
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/* We use GNU ld so undefine this so that attribute((init_priority)) works. */
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#undef CTORS_SECTION_ASM_OP
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#undef DTORS_SECTION_ASM_OP
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/* Do code reading to identify a signal frame, and set the frame
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state data appropriately. See unwind-dw2.c for the structs. */
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#ifdef IN_LIBGCC2
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#include <signal.h>
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#include <sys/ucontext.h>
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#endif
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/* Handle multilib correctly. */
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#if defined(__arch64__)
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/* 64-bit Sparc version */
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#define MD_FALLBACK_FRAME_STATE_FOR(CONTEXT, FS, SUCCESS) \
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do { \
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unsigned int *pc_ = (CONTEXT)->ra; \
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long new_cfa_, i_; \
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long regs_off_, fpu_save_off_; \
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long this_cfa_, fpu_save_; \
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\
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if (pc_[0] != 0x82102065 /* mov NR_rt_sigreturn, %g1 */ \
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|| pc_[1] != 0x91d0206d) /* ta 0x6d */ \
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break; \
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regs_off_ = 192 + 128; \
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fpu_save_off_ = regs_off_ + (16 * 8) + (3 * 8) + (2 * 4); \
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this_cfa_ = (long) (CONTEXT)->cfa; \
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new_cfa_ = *(long *)(((CONTEXT)->cfa) + (regs_off_ + (14 * 8))); \
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fpu_save_ = *(long *)((this_cfa_) + (fpu_save_off_)); \
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(FS)->cfa_how = CFA_REG_OFFSET; \
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(FS)->cfa_reg = 14; \
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(FS)->cfa_offset = new_cfa_ - (long) (CONTEXT)->cfa; \
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for (i_ = 1; i_ < 16; ++i_) \
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{ \
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if (i_ == 14) \
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continue; \
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(FS)->regs.reg[i_].how = REG_SAVED_OFFSET; \
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(FS)->regs.reg[i_].loc.offset = \
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this_cfa_ + (regs_off_ + (i_ * 8)) - new_cfa_; \
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} \
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for (i_ = 0; i_ < 16; ++i_) \
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{ \
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(FS)->regs.reg[i_ + 16].how = REG_SAVED_OFFSET; \
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(FS)->regs.reg[i_ + 16].loc.offset = \
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this_cfa_ + (i_ * 8) - new_cfa_; \
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} \
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if (fpu_save_) \
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{ \
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for (i_ = 0; i_ < 64; ++i_) \
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{ \
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if (i_ > 32 && (i_ & 0x1)) \
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continue; \
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(FS)->regs.reg[i_ + 32].how = REG_SAVED_OFFSET; \
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(FS)->regs.reg[i_ + 32].loc.offset = \
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(fpu_save_ + (i_ * 4)) - new_cfa_; \
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} \
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} \
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/* Stick return address into %g0, same trick Alpha uses. */ \
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(FS)->regs.reg[0].how = REG_SAVED_OFFSET; \
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(FS)->regs.reg[0].loc.offset = \
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this_cfa_ + (regs_off_ + (16 * 8) + 8) - new_cfa_; \
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(FS)->retaddr_column = 0; \
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goto SUCCESS; \
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} while (0)
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#else
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/* 32-bit Sparc version */
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#define MD_FALLBACK_FRAME_STATE_FOR(CONTEXT, FS, SUCCESS) \
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do { \
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unsigned int *pc_ = (CONTEXT)->ra; \
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int new_cfa_, i_, oldstyle_; \
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int regs_off_, fpu_save_off_; \
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int fpu_save_, this_cfa_; \
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\
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if (pc_[1] != 0x91d02010) /* ta 0x10 */ \
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break; \
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if (pc_[0] == 0x821020d8) /* mov NR_sigreturn, %g1 */ \
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oldstyle_ = 1; \
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else if (pc_[0] == 0x82102065) /* mov NR_rt_sigreturn, %g1 */ \
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oldstyle_ = 0; \
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else \
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break; \
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if (oldstyle_) \
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{ \
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regs_off_ = 96; \
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fpu_save_off_ = regs_off_ + (4 * 4) + (16 * 4); \
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} \
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else \
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{ \
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regs_off_ = 96 + 128; \
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fpu_save_off_ = regs_off_ + (4 * 4) + (16 * 4) + (2 * 4); \
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} \
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this_cfa_ = (int) (CONTEXT)->cfa; \
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new_cfa_ = *(int *)(((CONTEXT)->cfa) + (regs_off_+(4*4)+(14 * 4))); \
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fpu_save_ = *(int *)((this_cfa_) + (fpu_save_off_)); \
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(FS)->cfa_how = CFA_REG_OFFSET; \
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(FS)->cfa_reg = 14; \
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(FS)->cfa_offset = new_cfa_ - (int) (CONTEXT)->cfa; \
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for (i_ = 1; i_ < 16; ++i_) \
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{ \
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if (i_ == 14) \
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continue; \
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(FS)->regs.reg[i_].how = REG_SAVED_OFFSET; \
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(FS)->regs.reg[i_].loc.offset = \
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this_cfa_ + (regs_off_+(4 * 4)+(i_ * 4)) - new_cfa_; \
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} \
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for (i_ = 0; i_ < 16; ++i_) \
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{ \
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(FS)->regs.reg[i_ + 16].how = REG_SAVED_OFFSET; \
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(FS)->regs.reg[i_ + 16].loc.offset = \
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this_cfa_ + (i_ * 4) - new_cfa_; \
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} \
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if (fpu_save_) \
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{ \
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for (i_ = 0; i_ < 32; ++i_) \
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{ \
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(FS)->regs.reg[i_ + 32].how = REG_SAVED_OFFSET; \
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(FS)->regs.reg[i_ + 32].loc.offset = \
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(fpu_save_ + (i_ * 4)) - new_cfa_; \
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} \
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} \
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/* Stick return address into %g0, same trick Alpha uses. */ \
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(FS)->regs.reg[0].how = REG_SAVED_OFFSET; \
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(FS)->regs.reg[0].loc.offset = this_cfa_+(regs_off_+4)-new_cfa_; \
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(FS)->retaddr_column = 0; \
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goto SUCCESS; \
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} while (0)
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#endif
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