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| author | Kevin Buettner <kevinb@redhat.com> | 2003-03-19 18:18:36 +0000 |
|---|---|---|
| committer | Kevin Buettner <kevinb@gcc.gnu.org> | 2003-03-19 18:18:36 +0000 |
| commit | 9eb0ef7a07219dd4e4bfd6f8c3cd216e0a250367 (patch) | |
| tree | 6abbdc11823b33bd84dada3edecf7bf6475c036c /gcc/dwarf2out.c | |
| parent | b25a23bd5a16e5e6d9f9fbcd0273ffe900b072e9 (diff) | |
| download | gcc-9eb0ef7a07219dd4e4bfd6f8c3cd216e0a250367.zip gcc-9eb0ef7a07219dd4e4bfd6f8c3cd216e0a250367.tar.gz gcc-9eb0ef7a07219dd4e4bfd6f8c3cd216e0a250367.tar.bz2 | |
Add support for DWARF 3 64-bit sections.
From-SVN: r64589
Diffstat (limited to 'gcc/dwarf2out.c')
| -rw-r--r-- | gcc/dwarf2out.c | 30 |
1 files changed, 28 insertions, 2 deletions
diff --git a/gcc/dwarf2out.c b/gcc/dwarf2out.c index f4f339e..a1e27cb 100644 --- a/gcc/dwarf2out.c +++ b/gcc/dwarf2out.c @@ -257,6 +257,18 @@ dw_fde_node; #define DWARF_OFFSET_SIZE 4 #endif +/* According to the (draft) DWARF 3 specification, the initial length + should either be 4 or 12 bytes. When it's 12 bytes, the first 4 + bytes are 0xffffffff, followed by the length stored in the next 8 + bytes. + + However, the SGI/MIPS ABI uses an initial length which is equal to + DWARF_OFFSET_SIZE. It is defined (elsewhere) accordingly. */ + +#ifndef DWARF_INITIAL_LENGTH_SIZE +#define DWARF_INITIAL_LENGTH_SIZE (DWARF_OFFSET_SIZE == 4 ? 4 : 12) +#endif + #define DWARF_VERSION 2 /* Round SIZE up to the nearest BOUNDARY. */ @@ -3397,7 +3409,8 @@ limbo_die_node; language, and compiler version. */ /* Fixed size portion of the DWARF compilation unit header. */ -#define DWARF_COMPILE_UNIT_HEADER_SIZE (2 * DWARF_OFFSET_SIZE + 3) +#define DWARF_COMPILE_UNIT_HEADER_SIZE \ + (DWARF_INITIAL_LENGTH_SIZE + DWARF_OFFSET_SIZE + 3) /* Fixed size portion of public names info. */ #define DWARF_PUBNAMES_HEADER_SIZE (2 * DWARF_OFFSET_SIZE + 2) @@ -6912,7 +6925,11 @@ output_die (die) static void output_compilation_unit_header () { - dw2_asm_output_data (DWARF_OFFSET_SIZE, next_die_offset - DWARF_OFFSET_SIZE, + if (DWARF_INITIAL_LENGTH_SIZE - DWARF_OFFSET_SIZE == 4) + dw2_asm_output_data (4, 0xffffffff, + "Initial length escape value indicating 64-bit DWARF extension"); + dw2_asm_output_data (DWARF_OFFSET_SIZE, + next_die_offset - DWARF_INITIAL_LENGTH_SIZE, "Length of Compilation Unit Info"); dw2_asm_output_data (2, DWARF_VERSION, "DWARF version number"); dw2_asm_output_offset (DWARF_OFFSET_SIZE, abbrev_section_label, @@ -7023,6 +7040,9 @@ output_pubnames () unsigned i; unsigned long pubnames_length = size_of_pubnames (); + if (DWARF_INITIAL_LENGTH_SIZE - DWARF_OFFSET_SIZE == 4) + dw2_asm_output_data (4, 0xffffffff, + "Initial length escape value indicating 64-bit DWARF extension"); dw2_asm_output_data (DWARF_OFFSET_SIZE, pubnames_length, "Length of Public Names Info"); dw2_asm_output_data (2, DWARF_VERSION, "DWARF Version"); @@ -7081,6 +7101,9 @@ output_aranges () unsigned i; unsigned long aranges_length = size_of_aranges (); + if (DWARF_INITIAL_LENGTH_SIZE - DWARF_OFFSET_SIZE == 4) + dw2_asm_output_data (4, 0xffffffff, + "Initial length escape value indicating 64-bit DWARF extension"); dw2_asm_output_data (DWARF_OFFSET_SIZE, aranges_length, "Length of Address Ranges Info"); dw2_asm_output_data (2, DWARF_VERSION, "DWARF Version"); @@ -7526,6 +7549,9 @@ output_line_info () ASM_GENERATE_INTERNAL_LABEL (p1, LN_PROLOG_AS_LABEL, 0); ASM_GENERATE_INTERNAL_LABEL (p2, LN_PROLOG_END_LABEL, 0); + if (DWARF_INITIAL_LENGTH_SIZE - DWARF_OFFSET_SIZE == 4) + dw2_asm_output_data (4, 0xffffffff, + "Initial length escape value indicating 64-bit DWARF extension"); dw2_asm_output_delta (DWARF_OFFSET_SIZE, l2, l1, "Length of Source Line Info"); ASM_OUTPUT_LABEL (asm_out_file, l1); |