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| author | Richard Henderson <rth@redhat.com> | 2011-08-02 12:56:29 -0700 |
|---|---|---|
| committer | Richard Henderson <rth@gcc.gnu.org> | 2011-08-02 12:56:29 -0700 |
| commit | 8f1594b2b805e9214594ad1f4552f629429fd07e (patch) | |
| tree | 5e890980807492b4cdd0eb854fdc3823adfefa57 /gcc/dwarf2cfi.c | |
| parent | 66f1dc79f5c4cc5b9cc95a23e05bae44fa8665f3 (diff) | |
| download | gcc-8f1594b2b805e9214594ad1f4552f629429fd07e.zip gcc-8f1594b2b805e9214594ad1f4552f629429fd07e.tar.gz gcc-8f1594b2b805e9214594ad1f4552f629429fd07e.tar.bz2 | |
h8300: Generate correct unwind info around swap_into/out_of_er6.
Minimal bug fix is to unset RTX_FRAME_RELATED_P on the PUSH
insn generated in h8300_swap_into_er6. But with a tiny bit
of effort we can generate real unwind info around the sequence.
From-SVN: r177209
Diffstat (limited to 'gcc/dwarf2cfi.c')
| -rw-r--r-- | gcc/dwarf2cfi.c | 29 |
1 files changed, 11 insertions, 18 deletions
diff --git a/gcc/dwarf2cfi.c b/gcc/dwarf2cfi.c index 99b37ab..69218cb2d 100644 --- a/gcc/dwarf2cfi.c +++ b/gcc/dwarf2cfi.c @@ -778,8 +778,8 @@ def_cfa_1 (dw_cfa_location *new_cfa) if (cfi) { cur_row->cfa = *new_cfa; - if (cfi->dw_cfi_opc == DW_CFA_def_cfa_expression) - cur_row->cfa_cfi = cfi; + cur_row->cfa_cfi = (cfi->dw_cfi_opc == DW_CFA_def_cfa_expression + ? cfi : NULL); add_cfi (cfi); } @@ -1205,18 +1205,13 @@ dwarf2out_frame_debug_def_cfa (rtx pat) memset (&loc, 0, sizeof (loc)); - switch (GET_CODE (pat)) + if (GET_CODE (pat) == PLUS) { - case PLUS: - loc.reg = dwf_regno (XEXP (pat, 0)); loc.offset = INTVAL (XEXP (pat, 1)); - break; - - case REG: - loc.reg = dwf_regno (pat); - break; - - case MEM: + pat = XEXP (pat, 0); + } + if (MEM_P (pat)) + { loc.indirect = 1; pat = XEXP (pat, 0); if (GET_CODE (pat) == PLUS) @@ -1224,13 +1219,11 @@ dwarf2out_frame_debug_def_cfa (rtx pat) loc.base_offset = INTVAL (XEXP (pat, 1)); pat = XEXP (pat, 0); } - loc.reg = dwf_regno (pat); - break; - - default: - /* Recurse and define an expression. */ - gcc_unreachable (); } + /* ??? If this fails, we could be calling into the _loc functions to + define a full expression. So far no port does that. */ + gcc_assert (REG_P (pat)); + loc.reg = dwf_regno (pat); def_cfa_1 (&loc); } |