diff options
| author | Max Filippov <jcmvbkbc@gmail.com> | 2012-01-13 09:21:32 +0400 |
|---|---|---|
| committer | Max Filippov <jcmvbkbc@gmail.com> | 2012-02-18 14:55:51 +0400 |
| commit | e61dc8f72c096e084106d5e97101d9d88f642d0e (patch) | |
| tree | 9f1040d377372c4771d9f061bd163fac5ea7e41b /target-xtensa/cpu.h | |
| parent | ab58c5b4fd07fbe94950ff459ef51d43cfb5b8c8 (diff) | |
target-xtensa: implement instruction breakpoints
Add IBREAKA/IBREAKENABLE SRs and implement debug exception, BREAK and
BREAK.N instructions and IBREAK breakpoints.
IBREAK breakpoint address is considered constant for TB lifetime.
On IBREAKA/IBREAKENABLE change corresponding TBs are invalidated.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Diffstat (limited to 'target-xtensa/cpu.h')
| -rw-r--r-- | target-xtensa/cpu.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/target-xtensa/cpu.h b/target-xtensa/cpu.h index c77fe13dda..a18072b7bd 100644 --- a/target-xtensa/cpu.h +++ b/target-xtensa/cpu.h @@ -126,6 +126,8 @@ enum { RASID = 90, ITLBCFG = 91, DTLBCFG = 92, + IBREAKENABLE = 96, + IBREAKA = 128, EPC1 = 177, DEPC = 192, EPS2 = 194, @@ -196,6 +198,7 @@ enum { EXC_KERNEL, EXC_USER, EXC_DOUBLE, + EXC_DEBUG, EXC_MAX }; @@ -425,6 +428,7 @@ static inline int cpu_mmu_index(CPUState *env) #define XTENSA_TBFLAG_RING_MASK 0x3 #define XTENSA_TBFLAG_EXCM 0x4 #define XTENSA_TBFLAG_LITBASE 0x8 +#define XTENSA_TBFLAG_DEBUG 0x10 static inline void cpu_get_tb_cpu_state(CPUState *env, target_ulong *pc, target_ulong *cs_base, int *flags) @@ -440,6 +444,11 @@ static inline void cpu_get_tb_cpu_state(CPUState *env, target_ulong *pc, (env->sregs[LITBASE] & 1)) { *flags |= XTENSA_TBFLAG_LITBASE; } + if (xtensa_option_enabled(env->config, XTENSA_OPTION_DEBUG)) { + if (xtensa_get_cintlevel(env) < env->config->debug_level) { + *flags |= XTENSA_TBFLAG_DEBUG; + } + } } #include "cpu-all.h" |