diff options
| author | Edgar E. Iglesias <edgar.iglesias@gmail.com> | 2010-02-15 11:17:33 +0100 |
|---|---|---|
| committer | Edgar E. Iglesias <edgar.iglesias@gmail.com> | 2010-02-15 11:17:33 +0100 |
| commit | fb9fb692312a84ebc6e9c10da6f374c5871ff7b0 (patch) | |
| tree | 58df9453e9d63464976dcfc6890bcc211619af06 | |
| parent | 204ff57128532207893f170dab4db158f2ca7024 (diff) | |
cris: Prepare for CRISv10.
* Add prefix flag and special reg.
* Add interrupt lockout.
* Add CC_OP_MSTEP.
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
| -rw-r--r-- | cpu-exec.c | 3 | ||||
| -rw-r--r-- | target-cris/cpu.h | 8 |
2 files changed, 9 insertions, 2 deletions
diff --git a/cpu-exec.c b/cpu-exec.c index 0256edf1f3..6a290fd6cd 100644 --- a/cpu-exec.c +++ b/cpu-exec.c @@ -497,7 +497,8 @@ int cpu_exec(CPUState *env1) } #elif defined(TARGET_CRIS) if (interrupt_request & CPU_INTERRUPT_HARD - && (env->pregs[PR_CCS] & I_FLAG)) { + && (env->pregs[PR_CCS] & I_FLAG) + && !env->locked_irq) { env->exception_index = EXCP_IRQ; do_interrupt(env); next_tb = 0; diff --git a/target-cris/cpu.h b/target-cris/cpu.h index 0626cd8dd9..445d92bfc7 100644 --- a/target-cris/cpu.h +++ b/target-cris/cpu.h @@ -49,6 +49,7 @@ #define PR_WZ 4 #define PR_EXS 5 #define PR_EDA 6 +#define PR_PREFIX 6 /* On CRISv10 P6 is reserved, we use it as prefix. */ #define PR_MOF 7 #define PR_DZ 8 #define PR_EBP 9 @@ -62,6 +63,7 @@ /* CPU flags. */ #define Q_FLAG 0x80000000 #define M_FLAG 0x40000000 +#define PFIX_FLAG 0x800 /* CRISv10 Only. */ #define S_FLAG 0x200 #define R_FLAG 0x100 #define P_FLAG 0x80 @@ -121,6 +123,8 @@ typedef struct CPUCRISState { /* X flag at the time of cc snapshot. */ int cc_x; + /* CRIS has certain insns that lockout interrupts. */ + int locked_irq; int interrupt_vector; int fault_vector; int trap_vector; @@ -180,6 +184,7 @@ enum { CC_OP_MULS, CC_OP_MULU, CC_OP_DSTEP, + CC_OP_MSTEP, CC_OP_BOUND, CC_OP_OR, @@ -253,7 +258,8 @@ static inline void cpu_get_tb_cpu_state(CPUState *env, target_ulong *pc, *pc = env->pc; *cs_base = 0; *flags = env->dslot | - (env->pregs[PR_CCS] & (S_FLAG | P_FLAG | U_FLAG | X_FLAG)); + (env->pregs[PR_CCS] & (S_FLAG | P_FLAG | U_FLAG + | X_FLAG | PFIX_FLAG)); } #endif |