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Update.
2003-05-30 Andreas Jaeger <aj@suse.de> * sysdeps/x86_64/dl-machine.h (ELF_MACHINE_RUNTIME_TRAMPOLINE): Add CFI directives. * sysdeps/unix/sysv/linux/x86_64/sigaction.c (RESTORE2): Add CFI directives. * sysdeps/generic/sysdep.h: Add CFI_* macros for C files. * sysdeps/unix/sysv/linux/x86_64/sysdep.h (SYSCALL_ERROR_HANDLER): Add CFI directives.
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Andreas Jaeger
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2b1c0eeae3
13
ChangeLog
13
ChangeLog
@ -1,3 +1,16 @@
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2003-05-30 Andreas Jaeger <aj@suse.de>
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* sysdeps/x86_64/dl-machine.h (ELF_MACHINE_RUNTIME_TRAMPOLINE):
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Add CFI directives.
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* sysdeps/unix/sysv/linux/x86_64/sigaction.c (RESTORE2): Add CFI
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directives.
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* sysdeps/generic/sysdep.h: Add CFI_* macros for C files.
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* sysdeps/unix/sysv/linux/x86_64/sysdep.h (SYSCALL_ERROR_HANDLER):
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Add CFI directives.
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2003-05-30 Jakub Jelinek <jakub@redhat.com>
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* sysdeps/powerpc/powerpc32/elf/start.S: Make code compilable with
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@ -66,5 +66,31 @@
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# define cfi_offset(reg, off)
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# endif
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#else /* ! ASSEMBLER */
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# ifdef HAVE_ASM_CFI_DIRECTIVES
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# define CFI_STRINGIFY(Name) CFI_STRINGIFY2 (Name)
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# define CFI_STRINGIFY2(Name) #Name
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# define CFI_STARTPROC ".cfi_startproc"
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# define CFI_ENDPROC ".cfi_endproc"
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# define CFI_DEF_CFA(reg, off) \
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".cfi_def_cfa " CFI_STRINGIFY(reg) "," CFI_STRINGIFY(off)
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# define CFI_DEF_CFA_REGISTER(reg) \
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".cfi_def_cfa_register " CFI_STRINGIFY(reg)
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# define CFI_DEF_CFA_OFFSET(off) \
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".cfi_def_cfa_offset " CFI_STRINGIFY(off)
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# define CFI_ADJUST_CFA_OFFSET(off) \
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".cfi_adjust_cfa_offset " CFI_STRINGIFY(off)
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# define CFI_OFFSET(reg, off) \
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".cfi_offset " CFI_STRINGIFY(reg) "," CFI_STRINGIFY(off)
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# else
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# define CFI_STARTPROC
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# define CFI_ENDPROC
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# define CFI_DEF_CFA(reg, off)
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# define CFI_DEF_CFA_REGISTER(reg)
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# define CFI_DEF_CFA_OFFSET(off)
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# define CFI_ADJUST_CFA_OFFSET(off)
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# define CFI_OFFSET(reg, off)
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# endif
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#endif /* __ASSEMBLER__ */
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@ -97,14 +97,15 @@ weak_alias (__libc_sigaction, sigaction)
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appropriate GDB maintainer. */
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#define RESTORE(name, syscall) RESTORE2 (name, syscall)
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#define RESTORE2(name, syscall) \
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# define RESTORE2(name, syscall) \
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asm \
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( \
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".align 16\n" \
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CFI_STARTPROC "\n" \
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"__" #name ":\n" \
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" movq $" #syscall ", %rax\n" \
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" syscall\n" \
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CFI_ENDPROC "\n" \
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);
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/* The return code for realtime-signals. */
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RESTORE (restore_rt, __NR_rt_sigreturn)
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@ -132,11 +132,13 @@
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0: \
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xorq %rdx, %rdx; \
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subq %rax, %rdx; \
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pushq %rdx \
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pushq %rdx; \
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cfi_adjust_cfa_offset(8); \
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PUSH_ERRNO_LOCATION_RETURN; \
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call BP_SYM (__errno_location)@PLT; \
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POP_ERRNO_LOCATION_RETURN; \
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popq %rdx; \
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cfi_adjust_cfa_offset(-8); \
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movl %edx, (%rax); \
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orq $-1, %rax; \
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jmp L(pseudo_end);
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@ -24,6 +24,7 @@
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#define ELF_MACHINE_NAME "x86_64"
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#include <sys/param.h>
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#include <sysdep.h>
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/* Return nonzero iff ELF header is compatible with the running host. */
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static inline int __attribute__ ((unused))
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@ -136,14 +137,17 @@ elf_machine_runtime_setup (struct link_map *l, int lazy, int profile)
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.globl _dl_runtime_resolve\n\
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.type _dl_runtime_resolve, @function\n\
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.align 16\n\
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" CFI_STARTPROC "\n\
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_dl_runtime_resolve:\n\
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pushq %rax # Preserve registers otherwise clobbered.\n\
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pushq %rcx\n\
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pushq %rdx\n\
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pushq %rsi\n\
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pushq %rdi\n\
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pushq %r8\n\
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pushq %r9\n\
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subq $56,%rsp\n\
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" CFI_ADJUST_CFA_OFFSET(72)" # Incorporate PLT\n\
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movq %rax,(%rsp) # Preserve registers otherwise clobbered.\n\
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movq %rcx,8(%rsp)\n\
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movq %rdx,16(%rsp)\n\
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movq %rsi,24(%rsp)\n\
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movq %rdi,32(%rsp)\n\
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movq %r8,40(%rsp)\n\
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movq %r9,48(%rsp)\n\
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movq 64(%rsp), %rsi # Copy args pushed by PLT in register.\n\
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movq %rsi,%r11 # Multiply by 24\n\
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addq %r11,%rsi\n\
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@ -152,28 +156,33 @@ _dl_runtime_resolve:\n\
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movq 56(%rsp), %rdi # %rdi: link_map, %rsi: reloc_offset\n\
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call fixup # Call resolver.\n\
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movq %rax, %r11 # Save return value\n\
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popq %r9 # Get register content back.\n\
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popq %r8\n\
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popq %rdi\n\
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popq %rsi\n\
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popq %rdx\n\
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popq %rcx\n\
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popq %rax\n\
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addq $16,%rsp # Adjust stack\n\
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movq 48(%rsp),%r9 # Get register content back.\n\
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movq 40(%rsp),%r8\n\
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movq 32(%rsp),%rdi\n\
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movq 24(%rsp),%rsi\n\
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movq 16(%rsp),%rdx\n\
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movq 8(%rsp),%rcx\n\
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movq (%rsp),%rax\n\
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addq $72,%rsp # Adjust stack(PLT did 2 pushes)\n\
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" CFI_ADJUST_CFA_OFFSET(-72)" \n\
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jmp *%r11 # Jump to function address.\n\
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" CFI_ENDPROC "\n\
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.size _dl_runtime_resolve, .-_dl_runtime_resolve\n\
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\n\
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.globl _dl_runtime_profile\n\
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.type _dl_runtime_profile, @function\n\
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.align 16\n\
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" CFI_STARTPROC "\n\
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_dl_runtime_profile:\n\
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pushq %rax # Preserve registers otherwise clobbered.\n\
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pushq %rcx\n\
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pushq %rdx\n\
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pushq %rsi\n\
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pushq %rdi\n\
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pushq %r8\n\
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pushq %r9\n\
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subq $56,%rsp\n\
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" CFI_ADJUST_CFA_OFFSET(72)" # Incorporate PLT\n\
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movq %rax,(%rsp) # Preserve registers otherwise clobbered.\n\
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movq %rcx,8(%rsp)\n\
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movq %rdx,16(%rsp)\n\
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movq %rsi,24(%rsp)\n\
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movq %rdi,32(%rsp)\n\
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movq %r8,40(%rsp)\n\
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movq %r9,48(%rsp)\n\
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movq 72(%rsp), %rdx # Load return address if needed\n\
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movq 64(%rsp), %rsi # Copy args pushed by PLT in register.\n\
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movq %rsi,%r11 # Multiply by 24\n\
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@ -183,15 +192,17 @@ _dl_runtime_profile:\n\
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movq 56(%rsp), %rdi # %rdi: link_map, %rsi: reloc_offset\n\
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call profile_fixup # Call resolver.\n\
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movq %rax, %r11 # Save return value\n\
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popq %r9 # Get register content back.\n\
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popq %r8\n\
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popq %rdi\n\
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popq %rsi\n\
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popq %rdx\n\
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popq %rcx\n\
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popq %rax\n\
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addq $16,%rsp # Adjust stack\n\
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movq 48(%rsp),%r9 # Get register content back.\n\
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movq 40(%rsp),%r8\n\
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movq 32(%rsp),%rdi\n\
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movq 24(%rsp),%rsi\n\
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movq 16(%rsp),%rdx\n\
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movq 8(%rsp),%rcx\n\
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movq (%rsp),%rax\n\
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addq $72,%rsp # Adjust stack\n\
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" CFI_ADJUST_CFA_OFFSET(-72)"\n\
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jmp *%r11 # Jump to function address.\n\
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" CFI_ENDPROC "\n\
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.size _dl_runtime_profile, .-_dl_runtime_profile\n\
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.previous\n\
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");
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@ -203,6 +214,7 @@ _dl_runtime_profile:\n\
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.type _dl_runtime_resolve, @function\n\
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.type _dl_runtime_profile, @function\n\
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.align 16\n\
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" CFI_STARTPROC "\n\
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_dl_runtime_resolve:\n\
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_dl_runtime_profile:\n\
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pushq %rax # Preserve registers otherwise clobbered.\n\
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@ -229,6 +241,7 @@ _dl_runtime_profile:\n\
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popq %rax\n\
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addq $16,%rsp # Adjust stack\n\
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jmp *%r11 # Jump to function address.\n\
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" CFI_ENDPROC "\n\
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.size _dl_runtime_resolve, .-_dl_runtime_resolve\n\
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.size _dl_runtime_profile, .-_dl_runtime_profile\n\
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.previous\n\
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