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| author | Paul Brook <paul@codesourcery.com> | 2004-08-09 20:31:41 +0000 |
|---|---|---|
| committer | Paul Brook <pbrook@gcc.gnu.org> | 2004-08-09 20:31:41 +0000 |
| commit | 9d8646d7b098cd131bd9263ec98d3c03bdf4f66b (patch) | |
| tree | b22213fcc797d974ef0d6a219a5158d5efb1523f /gcc/unwind-dw2.c | |
| parent | d37e6b50362c82ee6bcb630a949e7e38830901ba (diff) | |
| download | gcc-9d8646d7b098cd131bd9263ec98d3c03bdf4f66b.zip gcc-9d8646d7b098cd131bd9263ec98d3c03bdf4f66b.tar.gz gcc-9d8646d7b098cd131bd9263ec98d3c03bdf4f66b.tar.bz2 | |
unwind-dw2.c (uw_install_context_1): Update target saved stack pointer.
* unwind-dw2.c (uw_install_context_1): Update target saved stack
pointer.
Co-Authored-By: Richard Henderson <rth@redhat.com>
From-SVN: r85723
Diffstat (limited to 'gcc/unwind-dw2.c')
| -rw-r--r-- | gcc/unwind-dw2.c | 35 |
1 files changed, 19 insertions, 16 deletions
diff --git a/gcc/unwind-dw2.c b/gcc/unwind-dw2.c index 11b94b1..8b60b0c 100644 --- a/gcc/unwind-dw2.c +++ b/gcc/unwind-dw2.c @@ -1274,6 +1274,12 @@ uw_install_context_1 (struct _Unwind_Context *current, struct _Unwind_Context *target) { long i; + _Unwind_SpTmp sp_slot; + + /* If the target frame does not have a saved stack pointer, + then set up the target's CFA. */ + if (!_Unwind_GetGRPtr (target, __builtin_dwarf_sp_column ())) + _Unwind_SetSpColumn (target, target->cfa, &sp_slot); for (i = 0; i < DWARF_FRAME_REGISTERS; ++i) { @@ -1284,25 +1290,22 @@ uw_install_context_1 (struct _Unwind_Context *current, memcpy (c, t, dwarf_reg_size_table[i]); } -#ifdef EH_RETURN_STACKADJ_RTX - { - void *target_cfa; + /* If the current frame doesn't have a saved stack pointer, then we + need to rely on EH_RETURN_STACKADJ_RTX to get our target stack + pointer value reloaded. */ + if (!_Unwind_GetGRPtr (current, __builtin_dwarf_sp_column ())) + { + void *target_cfa; - /* If the last frame records a saved stack pointer, use it. */ - if (_Unwind_GetGRPtr (target, __builtin_dwarf_sp_column ())) target_cfa = _Unwind_GetPtr (target, __builtin_dwarf_sp_column ()); - else - target_cfa = target->cfa; - - /* We adjust SP by the difference between CURRENT and TARGET's CFA. */ - if (STACK_GROWS_DOWNWARD) - return target_cfa - current->cfa + target->args_size; - else - return current->cfa - target_cfa - target->args_size; - } -#else + + /* We adjust SP by the difference between CURRENT and TARGET's CFA. */ + if (STACK_GROWS_DOWNWARD) + return target_cfa - current->cfa + target->args_size; + else + return current->cfa - target_cfa - target->args_size; + } return 0; -#endif } static inline _Unwind_Ptr |