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target/xtensa: use correct number of registers in gdbstub

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System emulation should provide access to all registers, userspace
emulation should only provide access to unprivileged registers.
Record register flags from GDB register map definition, calculate both
num_regs and num_core_regs if either is zero. Use num_regs in system
emulation, num_core_regs in userspace emulation gdbstub.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
This commit is contained in:
Max Filippov 2018-02-03 23:55:06 -08:00
parent b9317a2a69
commit 1b7b26e474
4 changed files with 41 additions and 13 deletions
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14
target/xtensa/gdbstub.c
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@ -28,9 +28,14 @@ int xtensa_cpu_gdb_read_register(CPUState *cs, uint8_t *mem_buf, int n)
XtensaCPU *cpu = XTENSA_CPU(cs);
CPUXtensaState *env = &cpu->env;
const XtensaGdbReg *reg = env->config->gdb_regmap.reg + n;
#ifdef CONFIG_USER_ONLY
int num_regs = env->config->gdb_regmap.num_core_regs;
#else
int num_regs = env->config->gdb_regmap.num_regs;
#endif
unsigned i;
if (n < 0 || n >= env->config->gdb_regmap.num_regs) {
if (n < 0 || n >= num_regs) {
return 0;
}
@ -81,8 +86,13 @@ int xtensa_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n)
CPUXtensaState *env = &cpu->env;
uint32_t tmp;
const XtensaGdbReg *reg = env->config->gdb_regmap.reg + n;
#ifdef CONFIG_USER_ONLY
int num_regs = env->config->gdb_regmap.num_core_regs;
#else
int num_regs = env->config->gdb_regmap.num_regs;
#endif
if (n < 0 || n >= env->config->gdb_regmap.num_regs) {
if (n < 0 || n >= num_regs) {
return 0;
}