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| author | Roland McGrath <roland@hack.frob.com> | 2013-04-26 14:23:58 -0700 |
|---|---|---|
| committer | Roland McGrath <roland@hack.frob.com> | 2013-04-26 14:23:58 -0700 |
| commit | 28db0546beb292b42481d99505be3ff8f291dc96 (patch) | |
| tree | 1b3971368aa5c8def49c9d635a3f02226add2f60 | |
| parent | 9457fd952cafc701375fc9fae575a4aca1374de3 (diff) | |
| download | glibc-roland/x86_64-crt1-cfi.tar.gz | |
BZ#15407: Complete CFI annotations in x86_64 _start code.roland/x86_64-crt1-cfi
| -rw-r--r-- | ChangeLog | 6 | ||||
| -rw-r--r-- | sysdeps/x86_64/start.S | 3 |
2 files changed, 9 insertions, 0 deletions
@@ -1,3 +1,9 @@ +2013-04-26 Roland McGrath <roland@hack.frob.com> + + [BZ #15407] + * sysdeps/x86_64/start.S (_start): Use cfi_adjust_cfa_offset for + change to the stack pointer. + 2013-04-26 Joseph Myers <joseph@codesourcery.com> [BZ #15406] diff --git a/sysdeps/x86_64/start.S b/sysdeps/x86_64/start.S index 7cbc157662..e50b33cfd9 100644 --- a/sysdeps/x86_64/start.S +++ b/sysdeps/x86_64/start.S @@ -88,6 +88,7 @@ _start: #else popq %rsi /* Pop the argument count. */ #endif + cfi_adjust_cfa_offset (LP_SIZE) /* argv starts just at the current stack top. */ mov %RSP_LP, %RDX_LP /* Align the stack to a 16 byte boundary to follow the ABI. */ @@ -95,10 +96,12 @@ _start: /* Push garbage because we push 8 more bytes. */ pushq %rax + cfi_adjust_cfa_offset (-8) /* Provide the highest stack address to the user code (for stacks which grow downwards). */ pushq %rsp + cfi_adjust_cfa_offset (-8) #ifdef SHARED /* Pass address of our own entry points to .fini and .init. */ |