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| author | Jakub Jelinek <jakub@redhat.com> | 2006-02-27 23:07:06 +0000 |
|---|---|---|
| committer | Jakub Jelinek <jakub@redhat.com> | 2006-02-27 23:07:06 +0000 |
| commit | 63752a757f91daffcdfd0ee426067d770955e47d (patch) | |
| tree | 26aef1902ee94ca309ff55418a832c0c79d0df25 /gas/dw2gencfi.c | |
| parent | ad676ae7ef4921220099f00b4b7f63f78508c068 (diff) | |
| download | gdb-63752a757f91daffcdfd0ee426067d770955e47d.zip gdb-63752a757f91daffcdfd0ee426067d770955e47d.tar.gz gdb-63752a757f91daffcdfd0ee426067d770955e47d.tar.bz2 | |
bfd/
* elf-eh-frame.c (_bfd_elf_discard_section_eh_frame): Handle S flag.
(_bfd_elf_write_section_eh_frame): Likewise.
gas/
* dw2gencfi.c (struct fde_entry, struct cie_entry): Add signal_frame
field.
(CFI_signal_frame): Define.
(cfi_pseudo_table): Add .cfi_signal_frame.
(dot_cfi): Handle CFI_signal_frame.
(output_cie): Handle cie->signal_frame.
(select_cie_for_fde): Don't share CIE if signal_frame flag is
different. Copy signal_frame from FDE to newly created CIE.
* doc/as.texinfo: Document .cfi_signal_frame.
Diffstat (limited to 'gas/dw2gencfi.c')
| -rw-r--r-- | gas/dw2gencfi.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/gas/dw2gencfi.c b/gas/dw2gencfi.c index eb2f476..bfa5d5c 100644 --- a/gas/dw2gencfi.c +++ b/gas/dw2gencfi.c @@ -1,5 +1,5 @@ /* dw2gencfi.c - Support for generating Dwarf2 CFI information. - Copyright 2003, 2004, 2005 Free Software Foundation, Inc. + Copyright 2003, 2004, 2005, 2006 Free Software Foundation, Inc. Contributed by Michal Ludvig <mludvig@suse.cz> This file is part of GAS, the GNU Assembler. @@ -88,6 +88,7 @@ struct fde_entry struct cfi_insn_data *data; struct cfi_insn_data **last; unsigned int return_column; + unsigned int signal_frame; }; struct cie_entry @@ -95,6 +96,7 @@ struct cie_entry struct cie_entry *next; symbolS *start_address; unsigned int return_column; + unsigned int signal_frame; struct cfi_insn_data *first, *last; }; @@ -354,6 +356,7 @@ static void dot_cfi_endproc (int); #define CFI_return_column 0x101 #define CFI_rel_offset 0x102 #define CFI_escape 0x103 +#define CFI_signal_frame 0x104 const pseudo_typeS cfi_pseudo_table[] = { @@ -374,6 +377,7 @@ const pseudo_typeS cfi_pseudo_table[] = { "cfi_restore_state", dot_cfi, DW_CFA_restore_state }, { "cfi_window_save", dot_cfi, DW_CFA_GNU_window_save }, { "cfi_escape", dot_cfi_escape, 0 }, + { "cfi_signal_frame", dot_cfi, CFI_signal_frame }, { NULL, NULL, 0 } }; @@ -547,6 +551,10 @@ dot_cfi (int arg) cfi_add_CFA_insn (DW_CFA_GNU_window_save); break; + case CFI_signal_frame: + cur_fde_data->signal_frame = 1; + break; + default: abort (); } @@ -864,6 +872,8 @@ output_cie (struct cie_entry *cie) out_one (DW_CIE_VERSION); /* Version. */ out_one ('z'); /* Augmentation. */ out_one ('R'); + if (cie->signal_frame) + out_one ('S'); out_one (0); out_uleb128 (DWARF2_LINE_MIN_INSN_LENGTH); /* Code alignment. */ out_sleb128 (DWARF2_CIE_DATA_ALIGNMENT); /* Data alignment. */ @@ -944,7 +954,8 @@ select_cie_for_fde (struct fde_entry *fde, struct cfi_insn_data **pfirst) for (cie = cie_root; cie; cie = cie->next) { - if (cie->return_column != fde->return_column) + if (cie->return_column != fde->return_column + || cie->signal_frame != fde->signal_frame) continue; for (i = cie->first, j = fde->data; i != cie->last && j != NULL; @@ -1017,6 +1028,7 @@ select_cie_for_fde (struct fde_entry *fde, struct cfi_insn_data **pfirst) cie->next = cie_root; cie_root = cie; cie->return_column = fde->return_column; + cie->signal_frame = fde->signal_frame; cie->first = fde->data; for (i = cie->first; i ; i = i->next) |