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authorJakub Jelinek <jakub@redhat.com>2006-02-27 23:07:06 +0000
committerJakub Jelinek <jakub@redhat.com>2006-02-27 23:07:06 +0000
commit63752a757f91daffcdfd0ee426067d770955e47d (patch)
tree26aef1902ee94ca309ff55418a832c0c79d0df25 /gas
parentad676ae7ef4921220099f00b4b7f63f78508c068 (diff)
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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')
-rw-r--r--gas/ChangeLog12
-rw-r--r--gas/doc/as.texinfo3
-rw-r--r--gas/dw2gencfi.c16
3 files changed, 29 insertions, 2 deletions
diff --git a/gas/ChangeLog b/gas/ChangeLog
index ff194bb..f4d28ef 100644
--- a/gas/ChangeLog
+++ b/gas/ChangeLog
@@ -1,3 +1,15 @@
+2006-02-27 Jakub Jelinek <jakub@redhat.com>
+
+ * 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.
+
2006-02-27 Carlos O'Donell <carlos@codesourcery.com>
* doc/Makefile.am: Add html target.
diff --git a/gas/doc/as.texinfo b/gas/doc/as.texinfo
index b6879e2..d34b754 100644
--- a/gas/doc/as.texinfo
+++ b/gas/doc/as.texinfo
@@ -4102,6 +4102,9 @@ using the known displacement of the CFA register from the CFA.
This is often easier to use, because the number will match the
code it's annotating.
+@section @code{.cfi_signal_frame}
+Mark current function as signal trampoline.
+
@section @code{.cfi_window_save}
SPARC register window has been saved.
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)