diff options
Diffstat (limited to 'target/loongarch/gdbstub.c')
-rw-r--r-- | target/loongarch/gdbstub.c | 43 |
1 files changed, 33 insertions, 10 deletions
diff --git a/target/loongarch/gdbstub.c b/target/loongarch/gdbstub.c index 24e126fb2d..a4d1e28e36 100644 --- a/target/loongarch/gdbstub.c +++ b/target/loongarch/gdbstub.c @@ -11,6 +11,24 @@ #include "internals.h" #include "exec/gdbstub.h" +uint64_t read_fcc(CPULoongArchState *env) +{ + uint64_t ret = 0; + + for (int i = 0; i < 8; ++i) { + ret |= (uint64_t)env->cf[i] << (i * 8); + } + + return ret; +} + +void write_fcc(CPULoongArchState *env, uint64_t val) +{ + for (int i = 0; i < 8; ++i) { + env->cf[i] = (val >> (i * 8)) & 1; + } +} + int loongarch_cpu_gdb_read_register(CPUState *cs, GByteArray *mem_buf, int n) { LoongArchCPU *cpu = LOONGARCH_CPU(cs); @@ -19,8 +37,11 @@ int loongarch_cpu_gdb_read_register(CPUState *cs, GByteArray *mem_buf, int n) if (0 <= n && n < 32) { return gdb_get_regl(mem_buf, env->gpr[n]); } else if (n == 32) { - return gdb_get_regl(mem_buf, env->pc); + /* orig_a0 */ + return gdb_get_regl(mem_buf, 0); } else if (n == 33) { + return gdb_get_regl(mem_buf, env->pc); + } else if (n == 34) { return gdb_get_regl(mem_buf, env->CSR_BADV); } return 0; @@ -36,7 +57,7 @@ int loongarch_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n) if (0 <= n && n < 32) { env->gpr[n] = tmp; length = sizeof(target_ulong); - } else if (n == 32) { + } else if (n == 33) { env->pc = tmp; length = sizeof(target_ulong); } @@ -48,9 +69,10 @@ static int loongarch_gdb_get_fpu(CPULoongArchState *env, { if (0 <= n && n < 32) { return gdb_get_reg64(mem_buf, env->fpr[n]); - } else if (32 <= n && n < 40) { - return gdb_get_reg8(mem_buf, env->cf[n - 32]); - } else if (n == 40) { + } else if (n == 32) { + uint64_t val = read_fcc(env); + return gdb_get_reg64(mem_buf, val); + } else if (n == 33) { return gdb_get_reg32(mem_buf, env->fcsr0); } return 0; @@ -64,10 +86,11 @@ static int loongarch_gdb_set_fpu(CPULoongArchState *env, if (0 <= n && n < 32) { env->fpr[n] = ldq_p(mem_buf); length = 8; - } else if (32 <= n && n < 40) { - env->cf[n - 32] = ldub_p(mem_buf); - length = 1; - } else if (n == 40) { + } else if (n == 32) { + uint64_t val = ldq_p(mem_buf); + write_fcc(env, val); + length = 8; + } else if (n == 33) { env->fcsr0 = ldl_p(mem_buf); length = 4; } @@ -77,5 +100,5 @@ static int loongarch_gdb_set_fpu(CPULoongArchState *env, void loongarch_cpu_register_gdb_regs_for_features(CPUState *cs) { gdb_register_coprocessor(cs, loongarch_gdb_get_fpu, loongarch_gdb_set_fpu, - 41, "loongarch-fpu64.xml", 0); + 41, "loongarch-fpu.xml", 0); } |