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.
This commit is contained in:
Jakub Jelinek
parent
ad676ae7ef
commit
63752a757f
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@ -1,3 +1,8 @@
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2006-02-27 Jakub Jelinek <jakub@redhat.com>
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* elf-eh-frame.c (_bfd_elf_discard_section_eh_frame): Handle S flag.
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(_bfd_elf_write_section_eh_frame): Likewise.
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2006-02-27 Carlos O'Donell <carlos@codesourcery.com>
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* po/Make-in: Add html target.
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@ -1,5 +1,5 @@
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/* .eh_frame section optimization.
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Copyright 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
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Copyright 2001, 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
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Written by Jakub Jelinek <jakub@redhat.com>.
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This file is part of BFD, the Binary File Descriptor library.
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@ -613,6 +613,8 @@ _bfd_elf_discard_section_eh_frame
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ENSURE_NO_RELOCS (buf);
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REQUIRE (get_DW_EH_PE_width (cie.fde_encoding, ptr_size));
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break;
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case 'S':
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break;
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case 'P':
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{
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int per_width;
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@ -1178,6 +1180,8 @@ _bfd_elf_write_section_eh_frame (bfd *abfd,
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}
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buf++;
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break;
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case 'S':
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break;
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default:
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BFD_FAIL ();
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}
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@ -1,3 +1,15 @@
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2006-02-27 Jakub Jelinek <jakub@redhat.com>
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* dw2gencfi.c (struct fde_entry, struct cie_entry): Add signal_frame
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field.
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(CFI_signal_frame): Define.
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(cfi_pseudo_table): Add .cfi_signal_frame.
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(dot_cfi): Handle CFI_signal_frame.
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(output_cie): Handle cie->signal_frame.
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(select_cie_for_fde): Don't share CIE if signal_frame flag is
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different. Copy signal_frame from FDE to newly created CIE.
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* doc/as.texinfo: Document .cfi_signal_frame.
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2006-02-27 Carlos O'Donell <carlos@codesourcery.com>
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* doc/Makefile.am: Add html target.
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@ -4102,6 +4102,9 @@ using the known displacement of the CFA register from the CFA.
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This is often easier to use, because the number will match the
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code it's annotating.
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@section @code{.cfi_signal_frame}
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Mark current function as signal trampoline.
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@section @code{.cfi_window_save}
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SPARC register window has been saved.
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@ -1,5 +1,5 @@
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/* dw2gencfi.c - Support for generating Dwarf2 CFI information.
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Copyright 2003, 2004, 2005 Free Software Foundation, Inc.
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Copyright 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
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Contributed by Michal Ludvig <mludvig@suse.cz>
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This file is part of GAS, the GNU Assembler.
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@ -88,6 +88,7 @@ struct fde_entry
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struct cfi_insn_data *data;
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struct cfi_insn_data **last;
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unsigned int return_column;
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unsigned int signal_frame;
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};
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struct cie_entry
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@ -95,6 +96,7 @@ struct cie_entry
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struct cie_entry *next;
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symbolS *start_address;
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unsigned int return_column;
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unsigned int signal_frame;
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struct cfi_insn_data *first, *last;
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};
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@ -354,6 +356,7 @@ static void dot_cfi_endproc (int);
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#define CFI_return_column 0x101
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#define CFI_rel_offset 0x102
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#define CFI_escape 0x103
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#define CFI_signal_frame 0x104
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const pseudo_typeS cfi_pseudo_table[] =
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{
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@ -374,6 +377,7 @@ const pseudo_typeS cfi_pseudo_table[] =
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{ "cfi_restore_state", dot_cfi, DW_CFA_restore_state },
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{ "cfi_window_save", dot_cfi, DW_CFA_GNU_window_save },
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{ "cfi_escape", dot_cfi_escape, 0 },
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{ "cfi_signal_frame", dot_cfi, CFI_signal_frame },
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{ NULL, NULL, 0 }
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};
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@ -547,6 +551,10 @@ dot_cfi (int arg)
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cfi_add_CFA_insn (DW_CFA_GNU_window_save);
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break;
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case CFI_signal_frame:
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cur_fde_data->signal_frame = 1;
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break;
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default:
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abort ();
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}
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@ -864,6 +872,8 @@ output_cie (struct cie_entry *cie)
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out_one (DW_CIE_VERSION); /* Version. */
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out_one ('z'); /* Augmentation. */
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out_one ('R');
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if (cie->signal_frame)
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out_one ('S');
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out_one (0);
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out_uleb128 (DWARF2_LINE_MIN_INSN_LENGTH); /* Code alignment. */
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out_sleb128 (DWARF2_CIE_DATA_ALIGNMENT); /* Data alignment. */
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@ -944,7 +954,8 @@ select_cie_for_fde (struct fde_entry *fde, struct cfi_insn_data **pfirst)
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for (cie = cie_root; cie; cie = cie->next)
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{
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if (cie->return_column != fde->return_column)
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if (cie->return_column != fde->return_column
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|| cie->signal_frame != fde->signal_frame)
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continue;
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for (i = cie->first, j = fde->data;
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i != cie->last && j != NULL;
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@ -1017,6 +1028,7 @@ select_cie_for_fde (struct fde_entry *fde, struct cfi_insn_data **pfirst)
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cie->next = cie_root;
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cie_root = cie;
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cie->return_column = fde->return_column;
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cie->signal_frame = fde->signal_frame;
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cie->first = fde->data;
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for (i = cie->first; i ; i = i->next)
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