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.

diff --git a/ChangeLog b/ChangeLog
index 63a3668..9fc9234 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,16 @@
+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.
+
 2003-05-30  Jakub Jelinek  <jakub@redhat.com>
 
        * sysdeps/powerpc/powerpc32/elf/start.S: Make code compilable with

diff --git a/sysdeps/generic/sysdep.h b/sysdeps/generic/sysdep.h
index 3223c97..0feed3c 100644 (file)
--- a/sysdeps/generic/sysdep.h
+++ b/sysdeps/generic/sysdep.h
@@ -66,5 +66,31 @@
 #  define cfi_offset(reg, off)
 # endif
 
+#else /* ! ASSEMBLER */
+# ifdef HAVE_ASM_CFI_DIRECTIVES
+#  define CFI_STRINGIFY(Name) CFI_STRINGIFY2 (Name)
+#  define CFI_STRINGIFY2(Name) #Name
+#  define CFI_STARTPROC        ".cfi_startproc"
+#  define CFI_ENDPROC  ".cfi_endproc"
+#  define CFI_DEF_CFA(reg, off)        \
+   ".cfi_def_cfa " CFI_STRINGIFY(reg) "," CFI_STRINGIFY(off)
+#  define CFI_DEF_CFA_REGISTER(reg) \
+   ".cfi_def_cfa_register " CFI_STRINGIFY(reg)
+#  define CFI_DEF_CFA_OFFSET(off) \
+   ".cfi_def_cfa_offset " CFI_STRINGIFY(off)
+#  define CFI_ADJUST_CFA_OFFSET(off) \
+   ".cfi_adjust_cfa_offset " CFI_STRINGIFY(off)
+#  define CFI_OFFSET(reg, off) \
+   ".cfi_offset " CFI_STRINGIFY(reg) "," CFI_STRINGIFY(off)
+# else
+#  define CFI_STARTPROC
+#  define CFI_ENDPROC
+#  define CFI_DEF_CFA(reg, off)
+#  define CFI_DEF_CFA_REGISTER(reg)
+#  define CFI_DEF_CFA_OFFSET(off)
+#  define CFI_ADJUST_CFA_OFFSET(off)
+#  define CFI_OFFSET(reg, off)
+# endif
 
 #endif /* __ASSEMBLER__ */
+

diff --git a/sysdeps/unix/sysv/linux/x86_64/sigaction.c b/sysdeps/unix/sysv/linux/x86_64/sigaction.c
index 1d8ef6f..48cb447 100644 (file)
--- a/sysdeps/unix/sysv/linux/x86_64/sigaction.c
+++ b/sysdeps/unix/sysv/linux/x86_64/sigaction.c
@@ -97,14 +97,15 @@ weak_alias (__libc_sigaction, sigaction)
    appropriate GDB maintainer.  */
 
 #define RESTORE(name, syscall) RESTORE2 (name, syscall)
-#define RESTORE2(name, syscall) \
+# define RESTORE2(name, syscall) \
 asm                                            \
   (                                            \
    ".align 16\n"                               \
+   CFI_STARTPROC "\n"                          \
    "__" #name ":\n"                            \
    "   movq $" #syscall ", %rax\n"             \
    "   syscall\n"                              \
+   CFI_ENDPROC "\n"                            \
    );
-
 /* The return code for realtime-signals.  */
 RESTORE (restore_rt, __NR_rt_sigreturn)

diff --git a/sysdeps/unix/sysv/linux/x86_64/sysdep.h b/sysdeps/unix/sysv/linux/x86_64/sysdep.h
index e88c48a..430ec86 100644 (file)
--- a/sysdeps/unix/sysv/linux/x86_64/sysdep.h
+++ b/sysdeps/unix/sysv/linux/x86_64/sysdep.h
@@ -132,11 +132,13 @@
 0:                                             \
   xorq %rdx, %rdx;                             \
   subq %rax, %rdx;                             \
-  pushq %rdx                                   \
+  pushq %rdx;                                  \
+  cfi_adjust_cfa_offset(8);                    \
   PUSH_ERRNO_LOCATION_RETURN;                  \
   call BP_SYM (__errno_location)@PLT;          \
   POP_ERRNO_LOCATION_RETURN;                   \
   popq %rdx;                                   \
+  cfi_adjust_cfa_offset(-8);                   \
   movl %edx, (%rax);                           \
   orq $-1, %rax;                               \
   jmp L(pseudo_end);

diff --git a/sysdeps/x86_64/dl-machine.h b/sysdeps/x86_64/dl-machine.h
index c2eff57..964a4b4 100644 (file)
--- a/sysdeps/x86_64/dl-machine.h
+++ b/sysdeps/x86_64/dl-machine.h
@@ -24,6 +24,7 @@
 #define ELF_MACHINE_NAME "x86_64"
 
 #include <sys/param.h>
+#include <sysdep.h>
 
 /* Return nonzero iff ELF header is compatible with the running host.  */
 static inline int __attribute__ ((unused))
@@ -136,14 +137,17 @@ elf_machine_runtime_setup (struct link_map *l, int lazy, int profile)
        .globl _dl_runtime_resolve\n\
        .type _dl_runtime_resolve, @function\n\
        .align 16\n\
+       " CFI_STARTPROC "\n\
 _dl_runtime_resolve:\n\
-       pushq %rax              # Preserve registers otherwise clobbered.\n\
-       pushq %rcx\n\
-       pushq %rdx\n\
-       pushq %rsi\n\
-       pushq %rdi\n\
-       pushq %r8\n\
-       pushq %r9\n\
+       subq $56,%rsp\n\
+       " CFI_ADJUST_CFA_OFFSET(72)" # Incorporate PLT\n\
+       movq %rax,(%rsp)        # Preserve registers otherwise clobbered.\n\
+       movq %rcx,8(%rsp)\n\
+       movq %rdx,16(%rsp)\n\
+       movq %rsi,24(%rsp)\n\
+       movq %rdi,32(%rsp)\n\
+       movq %r8,40(%rsp)\n\
+       movq %r9,48(%rsp)\n\
        movq 64(%rsp), %rsi     # Copy args pushed by PLT in register.\n\
        movq %rsi,%r11          # Multiply by 24\n\
        addq %r11,%rsi\n\
@@ -152,28 +156,33 @@ _dl_runtime_resolve:\n\
        movq 56(%rsp), %rdi     # %rdi: link_map, %rsi: reloc_offset\n\
        call fixup              # Call resolver.\n\
        movq %rax, %r11         # Save return value\n\
-       popq %r9                # Get register content back.\n\
-       popq %r8\n\
-       popq %rdi\n\
-       popq %rsi\n\
-       popq %rdx\n\
-       popq %rcx\n\
-       popq %rax\n\
-       addq $16,%rsp           # Adjust stack\n\
+       movq 48(%rsp),%r9       # Get register content back.\n\
+       movq 40(%rsp),%r8\n\
+       movq 32(%rsp),%rdi\n\
+       movq 24(%rsp),%rsi\n\
+       movq 16(%rsp),%rdx\n\
+       movq 8(%rsp),%rcx\n\
+       movq (%rsp),%rax\n\
+       addq $72,%rsp           # Adjust stack(PLT did 2 pushes)\n\
+       " CFI_ADJUST_CFA_OFFSET(-72)" \n\
        jmp *%r11               # Jump to function address.\n\
+       " CFI_ENDPROC "\n\
        .size _dl_runtime_resolve, .-_dl_runtime_resolve\n\
 \n\
        .globl _dl_runtime_profile\n\
        .type _dl_runtime_profile, @function\n\
        .align 16\n\
+       " CFI_STARTPROC "\n\
 _dl_runtime_profile:\n\
-       pushq %rax              # Preserve registers otherwise clobbered.\n\
-       pushq %rcx\n\
-       pushq %rdx\n\
-       pushq %rsi\n\
-       pushq %rdi\n\
-       pushq %r8\n\
-       pushq %r9\n\
+       subq $56,%rsp\n\
+       " CFI_ADJUST_CFA_OFFSET(72)" # Incorporate PLT\n\
+       movq %rax,(%rsp)        # Preserve registers otherwise clobbered.\n\
+       movq %rcx,8(%rsp)\n\
+       movq %rdx,16(%rsp)\n\
+       movq %rsi,24(%rsp)\n\
+       movq %rdi,32(%rsp)\n\
+       movq %r8,40(%rsp)\n\
+       movq %r9,48(%rsp)\n\
        movq 72(%rsp), %rdx     # Load return address if needed\n\
        movq 64(%rsp), %rsi     # Copy args pushed by PLT in register.\n\
        movq %rsi,%r11          # Multiply by 24\n\
@@ -183,15 +192,17 @@ _dl_runtime_profile:\n\
        movq 56(%rsp), %rdi     # %rdi: link_map, %rsi: reloc_offset\n\
        call profile_fixup      # Call resolver.\n\
        movq %rax, %r11         # Save return value\n\
-       popq %r9                # Get register content back.\n\
-       popq %r8\n\
-       popq %rdi\n\
-       popq %rsi\n\
-       popq %rdx\n\
-       popq %rcx\n\
-       popq %rax\n\
-       addq $16,%rsp           # Adjust stack\n\
+       movq 48(%rsp),%r9       # Get register content back.\n\
+       movq 40(%rsp),%r8\n\
+       movq 32(%rsp),%rdi\n\
+       movq 24(%rsp),%rsi\n\
+       movq 16(%rsp),%rdx\n\
+       movq 8(%rsp),%rcx\n\
+       movq (%rsp),%rax\n\
+       addq $72,%rsp           # Adjust stack\n\
+       " CFI_ADJUST_CFA_OFFSET(-72)"\n\
        jmp *%r11               # Jump to function address.\n\
+       " CFI_ENDPROC "\n\
        .size _dl_runtime_profile, .-_dl_runtime_profile\n\
        .previous\n\
 ");
@@ -203,6 +214,7 @@ _dl_runtime_profile:\n\
        .type _dl_runtime_resolve, @function\n\
        .type _dl_runtime_profile, @function\n\
        .align 16\n\
+       " CFI_STARTPROC "\n\
 _dl_runtime_resolve:\n\
 _dl_runtime_profile:\n\
        pushq %rax              # Preserve registers otherwise clobbered.\n\
@@ -229,6 +241,7 @@ _dl_runtime_profile:\n\
        popq %rax\n\
        addq $16,%rsp           # Adjust stack\n\
        jmp *%r11               # Jump to function address.\n\
+       " CFI_ENDPROC "\n\
        .size _dl_runtime_resolve, .-_dl_runtime_resolve\n\
        .size _dl_runtime_profile, .-_dl_runtime_profile\n\
        .previous\n\