diff options
| author | LIU Zhiwei <zhiwei_liu@c-sky.com> | 2022-01-20 20:20:35 +0800 |
|---|---|---|
| committer | Alistair Francis <alistair.francis@wdc.com> | 2022-01-21 15:52:57 +1000 |
| commit | 1191be09a90a866549993d4852cef7e094655e42 (patch) | |
| tree | ee757bfb994d27b2208205b17182ffc04e4d133a /target/riscv/gdbstub.c | |
| parent | bf9e776ec19a7e93dc520824c23cf8754fe274fd (diff) | |
target/riscv: Use gdb xml according to max mxlen
Signed-off-by: LIU Zhiwei <zhiwei_liu@c-sky.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 20220120122050.41546-9-zhiwei_liu@c-sky.com
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Diffstat (limited to 'target/riscv/gdbstub.c')
| -rw-r--r-- | target/riscv/gdbstub.c | 71 |
1 files changed, 52 insertions, 19 deletions
diff --git a/target/riscv/gdbstub.c b/target/riscv/gdbstub.c index a5429b92d4..f531a74c2f 100644 --- a/target/riscv/gdbstub.c +++ b/target/riscv/gdbstub.c @@ -50,11 +50,23 @@ int riscv_cpu_gdb_read_register(CPUState *cs, GByteArray *mem_buf, int n) { RISCVCPU *cpu = RISCV_CPU(cs); CPURISCVState *env = &cpu->env; + target_ulong tmp; if (n < 32) { - return gdb_get_regl(mem_buf, env->gpr[n]); + tmp = env->gpr[n]; } else if (n == 32) { - return gdb_get_regl(mem_buf, env->pc); + tmp = env->pc; + } else { + return 0; + } + + switch (env->misa_mxl_max) { + case MXL_RV32: + return gdb_get_reg32(mem_buf, tmp); + case MXL_RV64: + return gdb_get_reg64(mem_buf, tmp); + default: + g_assert_not_reached(); } return 0; } @@ -63,18 +75,32 @@ int riscv_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n) { RISCVCPU *cpu = RISCV_CPU(cs); CPURISCVState *env = &cpu->env; - - if (n == 0) { - /* discard writes to x0 */ - return sizeof(target_ulong); - } else if (n < 32) { - env->gpr[n] = ldtul_p(mem_buf); - return sizeof(target_ulong); + int length = 0; + target_ulong tmp; + + switch (env->misa_mxl_max) { + case MXL_RV32: + tmp = (int32_t)ldl_p(mem_buf); + length = 4; + break; + case MXL_RV64: + if (env->xl < MXL_RV64) { + tmp = (int32_t)ldq_p(mem_buf); + } else { + tmp = ldq_p(mem_buf); + } + length = 8; + break; + default: + g_assert_not_reached(); + } + if (n > 0 && n < 32) { + env->gpr[n] = tmp; } else if (n == 32) { - env->pc = ldtul_p(mem_buf); - return sizeof(target_ulong); + env->pc = tmp; } - return 0; + + return length; } static int riscv_gdb_get_fpu(CPURISCVState *env, GByteArray *buf, int n) @@ -387,13 +413,20 @@ void riscv_cpu_register_gdb_regs_for_features(CPUState *cs) cs->gdb_num_regs), "riscv-vector.xml", 0); } -#if defined(TARGET_RISCV32) - gdb_register_coprocessor(cs, riscv_gdb_get_virtual, riscv_gdb_set_virtual, - 1, "riscv-32bit-virtual.xml", 0); -#elif defined(TARGET_RISCV64) - gdb_register_coprocessor(cs, riscv_gdb_get_virtual, riscv_gdb_set_virtual, - 1, "riscv-64bit-virtual.xml", 0); -#endif + switch (env->misa_mxl_max) { + case MXL_RV32: + gdb_register_coprocessor(cs, riscv_gdb_get_virtual, + riscv_gdb_set_virtual, + 1, "riscv-32bit-virtual.xml", 0); + break; + case MXL_RV64: + gdb_register_coprocessor(cs, riscv_gdb_get_virtual, + riscv_gdb_set_virtual, + 1, "riscv-64bit-virtual.xml", 0); + break; + default: + g_assert_not_reached(); + } gdb_register_coprocessor(cs, riscv_gdb_get_csr, riscv_gdb_set_csr, riscv_gen_dynamic_csr_xml(cs, cs->gdb_num_regs), |