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| author | Richard Henderson <rth@redhat.com> | 2003-09-30 23:01:47 -0700 |
|---|---|---|
| committer | Richard Henderson <rth@gcc.gnu.org> | 2003-09-30 23:01:47 -0700 |
| commit | ed80cd6809e600cf021fc66cbc1d5fa5c682cab7 (patch) | |
| tree | 20abd603a5bcb42f4ffe7929126e0ebc032fc438 /gcc/unwind-dw2.c | |
| parent | 6ab7003d15f074b44f4a521a7ac46b9759492f86 (diff) | |
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dwarf2out.c (expand_builtin_init_dwarf_reg_sizes): Honor DWARF_ALT_FRAME_RETURN_COLUMN.
* dwarf2out.c (expand_builtin_init_dwarf_reg_sizes): Honor
DWARF_ALT_FRAME_RETURN_COLUMN.
* unwind-dw2.c (dwarf_reg_size_table): Expand by one.
(_Unwind_GetGR, _Unwind_SetGR): Validate lookup column.
(uw_frame_state_for): Return end-of-stack for null return address.
* doc/tm.texi (DWARF_ALT_FRAME_RETURN_COLUMN): Add.
* config/alpha/alpha.c (alpha_sa_mask): Add r31 for eh_return.
(alpha_expand_prologue): Store a zero for it.
(alpha_expand_epilogue): Don't reload it.
* config/alpha/alpha.h (DWARF_ALT_FRAME_RETURN_COLUMN): New.
* config/alpha/linux.h (MD_FALLBACK_FRAME_STATE_FOR): Use column 64
for the sigframe return address.
From-SVN: r71967
Diffstat (limited to 'gcc/unwind-dw2.c')
| -rw-r--r-- | gcc/unwind-dw2.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/gcc/unwind-dw2.c b/gcc/unwind-dw2.c index f94eaf9..09396c8 100644 --- a/gcc/unwind-dw2.c +++ b/gcc/unwind-dw2.c @@ -82,7 +82,7 @@ struct _Unwind_Context }; /* Byte size of every register managed by these routines. */ -static unsigned char dwarf_reg_size_table[DWARF_FRAME_REGISTERS]; +static unsigned char dwarf_reg_size_table[DWARF_FRAME_REGISTERS+1]; /* The result of interpreting the frame unwind info for a frame. @@ -186,6 +186,8 @@ _Unwind_GetGR (struct _Unwind_Context *context, int index) void *ptr; index = DWARF_REG_TO_UNWIND_COLUMN (index); + if (index >= sizeof(dwarf_reg_size_table)) + abort (); size = dwarf_reg_size_table[index]; ptr = context->reg[index]; @@ -222,6 +224,8 @@ _Unwind_SetGR (struct _Unwind_Context *context, int index, _Unwind_Word val) void *ptr; index = DWARF_REG_TO_UNWIND_COLUMN (index); + if (index >= sizeof(dwarf_reg_size_table)) + abort (); size = dwarf_reg_size_table[index]; ptr = context->reg[index]; @@ -1002,6 +1006,9 @@ uw_frame_state_for (struct _Unwind_Context *context, _Unwind_FrameState *fs) context->args_size = 0; context->lsda = 0; + if (context->ra == 0) + return _URC_END_OF_STACK; + fde = _Unwind_Find_FDE (context->ra - 1, &context->bases); if (fde == NULL) { |