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SUSE:SLE-12:Update
gcc48-testresults.2996
gcc41-ia64-stack-protector.patch
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File gcc41-ia64-stack-protector.patch of Package gcc48-testresults.2996
2005-07-08 Jakub Jelinek <jakub@redhat.com> * config/ia64/ia64.h (FRAME_GROWS_DOWNWARD): Define to 1 if -fstack-protect. * config/ia64/ia64.c (ia64_compute_frame_size): Make sure size is a multiple of 16 if FRAME_GROWS_DOWNWARD. (ia64_initial_elimination_offset): Support FRAME_GROWS_DOWNWARD layout. * config/ia64/linux.h (TARGET_LIBC_PROVIDES_SSP): Define. * config/ia64/ia64.md (stack_protect_set, stack_protect_test): New expanders. Index: gcc/config/ia64/linux.h =================================================================== --- gcc/config/ia64/linux.h.orig 2012-08-16 13:13:45.000000000 +0200 +++ gcc/config/ia64/linux.h 2012-12-11 12:48:44.759086378 +0100 @@ -77,6 +77,11 @@ do { \ #undef LINK_EH_SPEC #define LINK_EH_SPEC "" +#ifdef TARGET_LIBC_PROVIDES_SSP +/* IA-64 glibc provides __stack_chk_guard in [r13-8]. */ +#define TARGET_THREAD_SSP_OFFSET -8 +#endif + /* Put all *tf routines in libgcc. */ #undef LIBGCC2_HAS_TF_MODE #define LIBGCC2_HAS_TF_MODE 1 Index: gcc/config/ia64/ia64.c =================================================================== --- gcc/config/ia64/ia64.c.orig 2012-12-11 11:56:03.000000000 +0100 +++ gcc/config/ia64/ia64.c 2012-12-11 12:48:44.763086378 +0100 @@ -2879,6 +2879,9 @@ ia64_compute_frame_size (HOST_WIDE_INT s else pretend_args_size = crtl->args.pretend_args_size; + if (FRAME_GROWS_DOWNWARD) + size = IA64_STACK_ALIGN (size); + total_size = (spill_size + extra_spill_size + size + pretend_args_size + crtl->outgoing_args_size); total_size = IA64_STACK_ALIGN (total_size); @@ -2913,9 +2916,9 @@ ia64_can_eliminate (const int from ATTRI HOST_WIDE_INT ia64_initial_elimination_offset (int from, int to) { - HOST_WIDE_INT offset; + HOST_WIDE_INT offset, size = get_frame_size (); - ia64_compute_frame_size (get_frame_size ()); + ia64_compute_frame_size (size); switch (from) { case FRAME_POINTER_REGNUM: @@ -2936,6 +2939,7 @@ ia64_initial_elimination_offset (int fro default: gcc_unreachable (); } + offset += FRAME_GROWS_DOWNWARD ? IA64_STACK_ALIGN (size) : 0; break; case ARG_POINTER_REGNUM: Index: gcc/config/ia64/ia64.md =================================================================== --- gcc/config/ia64/ia64.md.orig 2012-10-19 10:44:15.000000000 +0200 +++ gcc/config/ia64/ia64.md 2012-12-11 12:48:44.764086378 +0100 @@ -5205,6 +5205,43 @@ [(set_attr "itanium_class" "unknown") (set_attr "predicable" "no")]) +;; +;; Stack guard expanders + +(define_expand "stack_protect_set" + [(set (match_operand 0 "memory_operand" "") + (match_operand 1 "memory_operand" ""))] + "" +{ +#ifdef TARGET_THREAD_SSP_OFFSET + rtx thread_pointer_rtx = gen_rtx_REG (Pmode, 13); + rtx canary = gen_rtx_MEM (Pmode, gen_rtx_PLUS (Pmode, thread_pointer_rtx, + GEN_INT (TARGET_THREAD_SSP_OFFSET))); + MEM_VOLATILE_P (canary) = MEM_VOLATILE_P (operands[1]); + operands[1] = canary; +#endif + emit_move_insn (operands[0], operands[1]); + DONE; +}) + +(define_expand "stack_protect_test" + [(match_operand 0 "memory_operand" "") + (match_operand 1 "memory_operand" "") + (match_operand 2 "" "")] + "" +{ +#ifdef TARGET_THREAD_SSP_OFFSET + rtx thread_pointer_rtx = gen_rtx_REG (Pmode, 13); + rtx canary = gen_rtx_MEM (Pmode, gen_rtx_PLUS (Pmode, thread_pointer_rtx, + GEN_INT (TARGET_THREAD_SSP_OFFSET))); + MEM_VOLATILE_P (canary) = MEM_VOLATILE_P (operands[1]); + operands[1] = canary; +#endif + emit_cmp_and_jump_insns (operands[0], operands[1], EQ, NULL_RTX, + ptr_mode, 1, operands[2]); + DONE; +}) + ;; Vector operations (include "vect.md") ;; Atomic operations Index: gcc/config/ia64/ia64.h =================================================================== --- gcc/config/ia64/ia64.h.orig 2012-04-17 12:30:33.000000000 +0200 +++ gcc/config/ia64/ia64.h 2012-12-11 12:48:44.764086378 +0100 @@ -872,7 +872,7 @@ enum reg_class /* Define this macro to nonzero if the addresses of local variable slots are at negative offsets from the frame pointer. */ -#define FRAME_GROWS_DOWNWARD 0 +#define FRAME_GROWS_DOWNWARD (flag_stack_protect != 0) /* Offset from the frame pointer to the first local variable slot to be allocated. */
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