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| author | Eric Botcazou <ebotcazou@adacore.com> | 2009-12-11 21:06:18 +0000 |
|---|---|---|
| committer | Eric Botcazou <ebotcazou@gcc.gnu.org> | 2009-12-11 21:06:18 +0000 |
| commit | 77cb940117db0b1873ccb4587b74499a0c1c4b73 (patch) | |
| tree | fbf7e8679a8901f29a2f9348e16b57791b02cbf8 /gcc | |
| parent | d4684c007a26cbfe71548b1173dd642b8daab1c2 (diff) | |
| download | gcc-77cb940117db0b1873ccb4587b74499a0c1c4b73.zip gcc-77cb940117db0b1873ccb4587b74499a0c1c4b73.tar.gz gcc-77cb940117db0b1873ccb4587b74499a0c1c4b73.tar.bz2 | |
linux-unwind.h (MD_FROB_UPDATE_CONTEXT, 64-bit): Define.
* config/sparc/linux-unwind.h (MD_FROB_UPDATE_CONTEXT, 64-bit): Define.
(sparc64_frob_update_context): New function.
From-SVN: r155178
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/config/sparc/linux-unwind.h | 17 |
2 files changed, 22 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index ba3f0d3..b8bc619 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2009-12-11 Eric Botcazou <ebotcazou@adacore.com> + + * config/sparc/linux-unwind.h (MD_FROB_UPDATE_CONTEXT, 64-bit): Define. + (sparc64_frob_update_context): New function. + 2009-12-11 Richard Guenther <rguenther@suse.de> PR lto/41658 diff --git a/gcc/config/sparc/linux-unwind.h b/gcc/config/sparc/linux-unwind.h index 4442066..adfef6e 100644 --- a/gcc/config/sparc/linux-unwind.h +++ b/gcc/config/sparc/linux-unwind.h @@ -98,6 +98,23 @@ sparc64_fallback_frame_state (struct _Unwind_Context *context, return _URC_NO_REASON; } +#define MD_FROB_UPDATE_CONTEXT sparc64_frob_update_context + +static void +sparc64_frob_update_context (struct _Unwind_Context *context, + _Unwind_FrameState *fs) +{ + /* The column of %sp contains the old CFA, not the old value of %sp. + The CFA offset already comprises the stack bias so, when %sp is the + CFA register, we must avoid counting the stack bias twice. Do not + do that for signal frames as the offset is artificial for them. */ + if (fs->regs.cfa_reg == __builtin_dwarf_sp_column () + && fs->regs.cfa_how == CFA_REG_OFFSET + && fs->regs.cfa_offset != 0 + && !fs->signal_frame) + context->cfa -= 2047; +} + #else /* 32-bit SPARC version */ |