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gdb: LoongArch: Change default char data type to signed

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According to "Procedure Call Standard for the LoongArch Architecture" [1],
for all base ABI types of LoongArch, the char data type in C is signed by
default, so change the char data type to signed in gdb/loongarch-tdep.c.

Before this patch:

make check-gdb TESTS="gdb.base/sizeof.exp"

=== gdb Summary ===

 # of expected passes		75
 # of unexpected failures	1

make check-gdb TESTS="gdb.base/charset.exp"

=== gdb Summary ===

 # of expected passes		277
 # of unexpected failures	6
 # of unsupported tests		1

After this patch:

make check-gdb TESTS="gdb.base/sizeof.exp"

=== gdb Summary ===

 # of expected passes		76

make check-gdb TESTS="gdb.base/charset.exp"

=== gdb Summary ===

 # of expected passes		283
 # of unsupported tests		1

[1] https://github.com/loongson/la-abi-specs/blob/release/lapcs.adoc#appendix-c-data-types-and-machine-data-types

Signed-off-by: Hui Li <lihui@loongson.cn>
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
This commit is contained in:
Hui Li
2025-10-30 10:51:56 +08:00
committed by Tiezhu Yang
parent f06e09588d
commit 73ab559062
1 changed files with 1 additions and 1 deletions
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2
gdb/loongarch-tdep.c
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@@ -2176,7 +2176,7 @@ loongarch_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
set_gdbarch_long_double_bit (gdbarch, 128);
set_gdbarch_long_double_format (gdbarch, floatformats_ieee_quad);
set_gdbarch_ptr_bit (gdbarch, info.bfd_arch_info->bits_per_address);
set_gdbarch_char_signed (gdbarch, 0);
set_gdbarch_char_signed (gdbarch, 1);
info.target_desc = tdesc;
info.tdesc_data = tdesc_data.get ();