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gdb: LoongArch: Modify the result of the info reg command

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The "info register" command should only display general registers,
but it shows the information of all registers in the current code,
add loongarch_register_reggroup_p() so that we can get the expected
result.

Signed-off-by: Hui Li <lihui@loongson.cn>
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
This commit is contained in:
Hui Li
2023-02-16 08:59:10 +08:00
committed by Tiezhu Yang
parent d273049e14
commit 9d7c73af4b
1 changed files with 39 additions and 0 deletions
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39
gdb/loongarch-tdep.c
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@ -24,6 +24,7 @@
#include "frame-unwind.h"
#include "gdbcore.h"
#include "loongarch-tdep.h"
#include "reggroups.h"
#include "target.h"
#include "target-descriptions.h"
#include "trad-frame.h"
@ -1433,6 +1434,43 @@ loongarch_find_default_target_description (const struct gdbarch_info info)
return loongarch_lookup_target_description (features);
}
static int
loongarch_register_reggroup_p (struct gdbarch *gdbarch, int regnum,
const struct reggroup *group)
{
if (gdbarch_register_name (gdbarch, regnum) == NULL
|| *gdbarch_register_name (gdbarch, regnum) == '\0')
return 0;
int raw_p = regnum < gdbarch_num_regs (gdbarch);
if (group == save_reggroup || group == restore_reggroup)
return raw_p;
if (group == all_reggroup)
return 1;
if (0 <= regnum && regnum <= LOONGARCH_BADV_REGNUM)
return group == general_reggroup;
/* Only ORIG_A0, PC, BADV in general_reggroup */
if (group == general_reggroup)
return 0;
if (LOONGARCH_FIRST_FP_REGNUM <= regnum && regnum <= LOONGARCH_FCSR_REGNUM)
return group == float_reggroup;
/* Only $fx / $fccx / $fcsr in float_reggroup */
if (group == float_reggroup)
return 0;
int ret = tdesc_register_in_reggroup_p (gdbarch, regnum, group);
if (ret != -1)
return ret;
return default_register_reggroup_p (gdbarch, regnum, group);
}
/* Initialize the current architecture based on INFO */
static struct gdbarch *
@ -1586,6 +1624,7 @@ loongarch_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
/* Hook in OS ABI-specific overrides, if they have been registered. */
gdbarch_init_osabi (info, gdbarch);
set_gdbarch_register_reggroup_p (gdbarch, loongarch_register_reggroup_p);
return gdbarch;
}