[binutils-gdb] gdb: LoongArch: fix failed testcases in gdb.base/align-c.exp

[binutils-gdb] gdb: LoongArch: fix failed testcases in gdb.base/align-c.exp

[Tiezhu Yang]

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=e34f44e1bf02c91825da11d47b3fadebc5bef451

commit e34f44e1bf02c91825da11d47b3fadebc5bef451
Author: Tiezhu Yang <yangtiezhu@loongson.cn>
Date:   Tue Mar 15 08:53:27 2022 +0800

    gdb: LoongArch: fix failed testcases in gdb.base/align-c.exp
    
    When execute the following command on LoongArch:
    
      make check-gdb TESTS="gdb.base/align-c.exp"
    
    there exist some failed testcases:
    
      ...
      FAIL: gdb.base/align-c.exp: print _Alignof(struct align_pair_long_double_x_float)
      FAIL: gdb.base/align-c.exp: print _Alignof(struct align_pair_long_double_x_double)
      FAIL: gdb.base/align-c.exp: print _Alignof(struct align_pair_long_double_x_long_double)
      ...
    
    According to LoongArch ELF ABI specification [1], set the target data types
    of floating-point to fix the above failed testcases.
    
    [1] https://loongson.github.io/LoongArch-Documentation/LoongArch-ELF-ABI-EN.html
    
    Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>

Diff:
---
 gdb/loongarch-tdep.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/gdb/loongarch-tdep.c b/gdb/loongarch-tdep.c
index ffcff03109a..0eda1636561 100644
--- a/gdb/loongarch-tdep.c
+++ b/gdb/loongarch-tdep.c
@@ -268,6 +268,10 @@ loongarch_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
   set_gdbarch_int_bit (gdbarch, 32);
   set_gdbarch_long_bit (gdbarch, info.bfd_arch_info->bits_per_address);
   set_gdbarch_long_long_bit (gdbarch, 64);
+  set_gdbarch_float_bit (gdbarch, 32);
+  set_gdbarch_double_bit (gdbarch, 64);
+  set_gdbarch_long_double_bit (gdbarch, 128);
+  set_gdbarch_long_double_format (gdbarch, floatformats_ia64_quad);
   set_gdbarch_ptr_bit (gdbarch, info.bfd_arch_info->bits_per_address);
   set_gdbarch_char_signed (gdbarch, 0);