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| author | Joseph Myers <joseph@codesourcery.com> | 2006-04-01 01:21:46 +0100 |
|---|---|---|
| committer | Joseph Myers <jsm28@gcc.gnu.org> | 2006-04-01 01:21:46 +0100 |
| commit | 0c33762a475087dc1996f79e400c5092863f27bf (patch) | |
| tree | add6ca4e576419f3085163151567cac5bd7be27c /gcc/dwarf2out.c | |
| parent | 771cdc9426f20e51c26c136e42ccb9036c3b1f37 (diff) | |
| download | gcc-0c33762a475087dc1996f79e400c5092863f27bf.zip gcc-0c33762a475087dc1996f79e400c5092863f27bf.tar.gz gcc-0c33762a475087dc1996f79e400c5092863f27bf.tar.bz2 | |
dwarf2.h (DW64_CIE_ID): Define.
* dwarf2.h (DW64_CIE_ID): Define.
* dwarf2out.c (DWARF_CIE_ID): Define.
(output_call_frame_info): Output 0xffffffff before standard 8-byte
length header. Use DWARF_CIE_ID.
(value_format): Use DW_FORM_data4 or DW_FORM_data8 for
dw_val_class_loc_list depending on DWARF_OFFSET_SIZE.
From-SVN: r112601
Diffstat (limited to 'gcc/dwarf2out.c')
| -rw-r--r-- | gcc/dwarf2out.c | 21 |
1 files changed, 16 insertions, 5 deletions
diff --git a/gcc/dwarf2out.c b/gcc/dwarf2out.c index 5b1894c..e400eb3 100644 --- a/gcc/dwarf2out.c +++ b/gcc/dwarf2out.c @@ -288,6 +288,14 @@ dw_fde_node; #endif #endif +/* CIE identifier. */ +#if HOST_BITS_PER_WIDE_INT >= 64 +#define DWARF_CIE_ID \ + (unsigned HOST_WIDE_INT) (DWARF_OFFSET_SIZE == 4 ? DW_CIE_ID : DW64_CIE_ID) +#else +#define DWARF_CIE_ID DW_CIE_ID +#endif + /* A pointer to the base of a table that contains frame description information for each routine. */ static GTY((length ("fde_table_allocated"))) dw_fde_ref fde_table; @@ -2218,6 +2226,9 @@ output_call_frame_info (int for_eh) /* Output the CIE. */ ASM_GENERATE_INTERNAL_LABEL (l1, CIE_AFTER_SIZE_LABEL, for_eh); ASM_GENERATE_INTERNAL_LABEL (l2, CIE_END_LABEL, for_eh); + if (DWARF_INITIAL_LENGTH_SIZE - DWARF_OFFSET_SIZE == 4 && !for_eh) + dw2_asm_output_data (4, 0xffffffff, + "Initial length escape value indicating 64-bit DWARF extension"); dw2_asm_output_delta (for_eh ? 4 : DWARF_OFFSET_SIZE, l2, l1, "Length of Common Information Entry"); ASM_OUTPUT_LABEL (asm_out_file, l1); @@ -2225,7 +2236,7 @@ output_call_frame_info (int for_eh) /* Now that the CIE pointer is PC-relative for EH, use 0 to identify the CIE. */ dw2_asm_output_data ((for_eh ? 4 : DWARF_OFFSET_SIZE), - (for_eh ? 0 : DW_CIE_ID), + (for_eh ? 0 : DWARF_CIE_ID), "CIE Identifier Tag"); dw2_asm_output_data (1, DW_CIE_VERSION, "CIE Version"); @@ -2350,6 +2361,9 @@ output_call_frame_info (int for_eh) targetm.asm_out.internal_label (asm_out_file, FDE_LABEL, for_eh + i * 2); ASM_GENERATE_INTERNAL_LABEL (l1, FDE_AFTER_SIZE_LABEL, for_eh + i * 2); ASM_GENERATE_INTERNAL_LABEL (l2, FDE_END_LABEL, for_eh + i * 2); + if (DWARF_INITIAL_LENGTH_SIZE - DWARF_OFFSET_SIZE == 4 && !for_eh) + dw2_asm_output_data (4, 0xffffffff, + "Initial length escape value indicating 64-bit DWARF extension"); dw2_asm_output_delta (for_eh ? 4 : DWARF_OFFSET_SIZE, l2, l1, "FDE Length"); ASM_OUTPUT_LABEL (asm_out_file, l1); @@ -6775,6 +6789,7 @@ value_format (dw_attr_ref a) return DW_FORM_addr; case dw_val_class_range_list: case dw_val_class_offset: + case dw_val_class_loc_list: switch (DWARF_OFFSET_SIZE) { case 4: @@ -6784,10 +6799,6 @@ value_format (dw_attr_ref a) default: gcc_unreachable (); } - case dw_val_class_loc_list: - /* FIXME: Could be DW_FORM_data8, with a > 32 bit size - .debug_loc section */ - return DW_FORM_data4; case dw_val_class_loc: switch (constant_size (size_of_locs (AT_loc (a)))) { |