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| author | Alan Modra <amodra@gmail.com> | 2017-03-05 23:25:16 +1030 |
|---|---|---|
| committer | Alan Modra <amodra@gmail.com> | 2017-03-06 20:43:45 +1030 |
| commit | ea0de82ec2d7f109ba179d8d55130805e680f02d (patch) | |
| tree | 9b9c946283977b68aff0d27f3053c66eb664ed5e /gas/dw2gencfi.c | |
| parent | 9e1a8675d49a5bbb881f664f8b7a1081432c994d (diff) | |
| download | gdb-ea0de82ec2d7f109ba179d8d55130805e680f02d.zip gdb-ea0de82ec2d7f109ba179d8d55130805e680f02d.tar.gz gdb-ea0de82ec2d7f109ba179d8d55130805e680f02d.tar.bz2 | |
dw2gencfi.c DWARF2_FDE_RELOC_SIZE
Add asserts that reloc size matches encoding size, and tidy.
* dw2gencfi.c (encoding_size): Return unsigned int.
(emit_expr_encoded): Assert size matches reloc bitsize.
(output_fde): Use unsigned for offset_size and addr_size. Set
addr_size earlier and use in place of constant 4 and uses of
DWARF2_FDE_RELOC_SIZE. Assert it matches reloc bitsize.
Diffstat (limited to 'gas/dw2gencfi.c')
| -rw-r--r-- | gas/dw2gencfi.c | 26 |
1 files changed, 14 insertions, 12 deletions
diff --git a/gas/dw2gencfi.c b/gas/dw2gencfi.c index b90b48f..359e732 100644 --- a/gas/dw2gencfi.c +++ b/gas/dw2gencfi.c @@ -157,7 +157,7 @@ out_sleb128 (offsetT value) output_leb128 (frag_more (sizeof_leb128 (value, 1)), value, 1); } -static offsetT +static unsigned int encoding_size (unsigned char encoding) { if (encoding == DW_EH_PE_omit) @@ -183,7 +183,7 @@ encoding_size (unsigned char encoding) static void emit_expr_encoded (expressionS *exp, int encoding, bfd_boolean emit_encoding) { - offsetT size = encoding_size (encoding); + unsigned int size = encoding_size (encoding); bfd_reloc_code_real_type code; if (encoding == DW_EH_PE_omit) @@ -197,6 +197,7 @@ emit_expr_encoded (expressionS *exp, int encoding, bfd_boolean emit_encoding) { reloc_howto_type *howto = bfd_reloc_type_lookup (stdoutput, code); char *p = frag_more (size); + gas_assert (size == howto->bitsize / 8); md_number_to_chars (p, 0, size); fix_new (frag_now, p - frag_now->fr_literal, size, exp->X_add_symbol, exp->X_add_number, howto->pc_relative, code); @@ -1934,8 +1935,8 @@ output_fde (struct fde_entry *fde, struct cie_entry *cie, expressionS exp; offsetT augmentation_size; enum dwarf2_format fmt = DWARF2_FORMAT (now_seg); - int offset_size; - int addr_size; + unsigned int offset_size; + unsigned int addr_size; after_size_address = symbol_temp_make (); end_address = symbol_temp_make (); @@ -1973,13 +1974,15 @@ output_fde (struct fde_entry *fde, struct cie_entry *cie, { bfd_reloc_code_real_type code = tc_cfi_reloc_for_encoding (cie->fde_encoding); + addr_size = DWARF2_FDE_RELOC_SIZE; if (code != BFD_RELOC_NONE) { reloc_howto_type *howto = bfd_reloc_type_lookup (stdoutput, code); - char *p = frag_more (4); - md_number_to_chars (p, 0, 4); - fix_new (frag_now, p - frag_now->fr_literal, 4, fde->start_address, - 0, howto->pc_relative, code); + char *p = frag_more (addr_size); + gas_assert (addr_size == howto->bitsize / 8); + md_number_to_chars (p, 0, addr_size); + fix_new (frag_now, p - frag_now->fr_literal, addr_size, + fde->start_address, 0, howto->pc_relative, code); } else { @@ -1988,19 +1991,18 @@ output_fde (struct fde_entry *fde, struct cie_entry *cie, #if CFI_DIFF_EXPR_OK exp.X_add_symbol = fde->start_address; exp.X_op_symbol = symbol_temp_new_now (); - emit_expr (&exp, DWARF2_FDE_RELOC_SIZE); /* Code offset. */ + emit_expr (&exp, addr_size); /* Code offset. */ #else exp.X_op = O_symbol; exp.X_add_symbol = fde->start_address; #if defined(tc_cfi_emit_pcrel_expr) - tc_cfi_emit_pcrel_expr (&exp, DWARF2_FDE_RELOC_SIZE); /* Code offset. */ + tc_cfi_emit_pcrel_expr (&exp, addr_size); /* Code offset. */ #else - emit_expr (&exp, DWARF2_FDE_RELOC_SIZE); /* Code offset. */ + emit_expr (&exp, addr_size); /* Code offset. */ #endif #endif } - addr_size = DWARF2_FDE_RELOC_SIZE; } else { |