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| author | Tiezhu Yang <yangtiezhu@loongson.cn> | 2022-07-12 10:33:28 +0800 |
|---|---|---|
| committer | Tiezhu Yang <yangtiezhu@loongson.cn> | 2022-07-12 20:14:48 +0800 |
| commit | 657a50227bbd835c83aadc2405e649c4b982c241 (patch) | |
| tree | 3ca4f73c0d7133aaefae84f50c57a6d774d513a7 /gdb/arch | |
| parent | 75948417af8f86d1b9b0e3b51f904e1345927885 (diff) | |
| download | gdb-657a50227bbd835c83aadc2405e649c4b982c241.zip gdb-657a50227bbd835c83aadc2405e649c4b982c241.tar.gz gdb-657a50227bbd835c83aadc2405e649c4b982c241.tar.bz2 | |
gdb: LoongArch: Add floating-point support
This commit adds floating-point support for LoongArch gdb.
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Diffstat (limited to 'gdb/arch')
| -rw-r--r-- | gdb/arch/loongarch.c | 9 | ||||
| -rw-r--r-- | gdb/arch/loongarch.h | 17 |
2 files changed, 25 insertions, 1 deletions
diff --git a/gdb/arch/loongarch.c b/gdb/arch/loongarch.c index 11310c1..c48c200 100644 --- a/gdb/arch/loongarch.c +++ b/gdb/arch/loongarch.c @@ -24,6 +24,7 @@ #include "../features/loongarch/base32.c" #include "../features/loongarch/base64.c" +#include "../features/loongarch/fpu.c" #ifndef GDBSERVER #define STATIC_IN_GDB static @@ -44,6 +45,11 @@ loongarch_create_target_description (const struct loongarch_gdbarch_features fea else if (features.xlen == 8) arch_name.append ("64"); + if (features.fputype == SINGLE_FLOAT) + arch_name.append ("f"); + else if (features.fputype == DOUBLE_FLOAT) + arch_name.append ("d"); + set_tdesc_architecture (tdesc.get (), arch_name.c_str ()); long regnum = 0; @@ -54,6 +60,9 @@ loongarch_create_target_description (const struct loongarch_gdbarch_features fea else if (features.xlen == 8) regnum = create_feature_loongarch_base64 (tdesc.get (), regnum); + /* For now we only support creating single float and double float. */ + regnum = create_feature_loongarch_fpu (tdesc.get (), regnum); + return tdesc; } diff --git a/gdb/arch/loongarch.h b/gdb/arch/loongarch.h index 5cf5498..799595b 100644 --- a/gdb/arch/loongarch.h +++ b/gdb/arch/loongarch.h @@ -23,7 +23,7 @@ #include "gdbsupport/tdesc.h" /* Register numbers of various important registers. */ -enum +enum loongarch_regnum { LOONGARCH_RA_REGNUM = 1, /* Return Address. */ LOONGARCH_SP_REGNUM = 3, /* Stack Pointer. */ @@ -36,6 +36,16 @@ enum LOONGARCH_LINUX_NUM_GREGSET = 45, /* 32 GPR, ORIG_A0, PC, BADV, RESERVED 10. */ LOONGARCH_ARG_REGNUM = 8, /* r4-r11: general-purpose argument registers. f0-f7: floating-point argument registers. */ + LOONGARCH_FIRST_FP_REGNUM = LOONGARCH_LINUX_NUM_GREGSET, + LOONGARCH_FCC_REGNUM = LOONGARCH_FIRST_FP_REGNUM + 32, + LOONGARCH_FCSR_REGNUM = LOONGARCH_FCC_REGNUM + 1, + LOONGARCH_LINUX_NUM_FPREGSET = 34, +}; + +enum loongarch_fputype +{ + SINGLE_FLOAT = 1, + DOUBLE_FLOAT = 2, }; /* The set of LoongArch architectural features that we track that impact how @@ -56,6 +66,11 @@ struct loongarch_gdbarch_features 0 value so we can spot if one of these is used uninitialised. */ int xlen = 0; + /* The type of floating-point. This is either 1 (single float) or 2 + (double float). No other value is valid. Initialise to the invalid + 0 value so we can spot if one of these is used uninitialised. */ + int fputype = 0; + /* Equality operator. */ bool operator== (const struct loongarch_gdbarch_features &rhs) const { |