diff options
Diffstat (limited to 'target-xtensa/op_helper.c')
| -rw-r--r-- | target-xtensa/op_helper.c | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/target-xtensa/op_helper.c b/target-xtensa/op_helper.c index 1feaaee7f0..e184cf64f0 100644 --- a/target-xtensa/op_helper.c +++ b/target-xtensa/op_helper.c @@ -134,6 +134,14 @@ void HELPER(exception_cause_vaddr)(uint32_t pc, uint32_t cause, uint32_t vaddr) HELPER(exception_cause)(pc, cause); } +void debug_exception_env(CPUState *new_env, uint32_t cause) +{ + if (xtensa_get_cintlevel(new_env) < new_env->config->debug_level) { + env = new_env; + HELPER(debug_exception)(env->pc, cause); + } +} + void HELPER(debug_exception)(uint32_t pc, uint32_t cause) { unsigned level = env->config->debug_level; @@ -700,3 +708,57 @@ void HELPER(wsr_ibreaka)(uint32_t i, uint32_t v) } env->sregs[IBREAKA + i] = v; } + +static void set_dbreak(unsigned i, uint32_t dbreaka, uint32_t dbreakc) +{ + int flags = BP_CPU | BP_STOP_BEFORE_ACCESS; + uint32_t mask = dbreakc | ~DBREAKC_MASK; + + if (env->cpu_watchpoint[i]) { + cpu_watchpoint_remove_by_ref(env, env->cpu_watchpoint[i]); + } + if (dbreakc & DBREAKC_SB) { + flags |= BP_MEM_WRITE; + } + if (dbreakc & DBREAKC_LB) { + flags |= BP_MEM_READ; + } + /* contiguous mask after inversion is one less than some power of 2 */ + if ((~mask + 1) & ~mask) { + qemu_log("DBREAKC mask is not contiguous: 0x%08x\n", dbreakc); + /* cut mask after the first zero bit */ + mask = 0xffffffff << (32 - clo32(mask)); + } + if (cpu_watchpoint_insert(env, dbreaka & mask, ~mask + 1, + flags, &env->cpu_watchpoint[i])) { + env->cpu_watchpoint[i] = NULL; + qemu_log("Failed to set data breakpoint at 0x%08x/%d\n", + dbreaka & mask, ~mask + 1); + } +} + +void HELPER(wsr_dbreaka)(uint32_t i, uint32_t v) +{ + uint32_t dbreakc = env->sregs[DBREAKC + i]; + + if ((dbreakc & DBREAKC_SB_LB) && + env->sregs[DBREAKA + i] != v) { + set_dbreak(i, v, dbreakc); + } + env->sregs[DBREAKA + i] = v; +} + +void HELPER(wsr_dbreakc)(uint32_t i, uint32_t v) +{ + if ((env->sregs[DBREAKC + i] ^ v) & (DBREAKC_SB_LB | DBREAKC_MASK)) { + if (v & DBREAKC_SB_LB) { + set_dbreak(i, env->sregs[DBREAKA + i], v); + } else { + if (env->cpu_watchpoint[i]) { + cpu_watchpoint_remove_by_ref(env, env->cpu_watchpoint[i]); + env->cpu_watchpoint[i] = NULL; + } + } + } + env->sregs[DBREAKC + i] = v; +} |