diff options
Diffstat (limited to 'linux-user/sparc/cpu_loop.c')
| -rw-r--r-- | linux-user/sparc/cpu_loop.c | 182 |
1 files changed, 141 insertions, 41 deletions
diff --git a/linux-user/sparc/cpu_loop.c b/linux-user/sparc/cpu_loop.c index c120c42278..b36bb2574b 100644 --- a/linux-user/sparc/cpu_loop.c +++ b/linux-user/sparc/cpu_loop.c @@ -149,6 +149,69 @@ static void flush_windows(CPUSPARCState *env) #endif } +static void next_instruction(CPUSPARCState *env) +{ + env->pc = env->npc; + env->npc = env->npc + 4; +} + +static uint32_t do_getcc(CPUSPARCState *env) +{ +#ifdef TARGET_SPARC64 + return cpu_get_ccr(env) & 0xf; +#else + return extract32(cpu_get_psr(env), 20, 4); +#endif +} + +static void do_setcc(CPUSPARCState *env, uint32_t icc) +{ +#ifdef TARGET_SPARC64 + cpu_put_ccr(env, (cpu_get_ccr(env) & 0xf0) | (icc & 0xf)); +#else + cpu_put_psr(env, deposit32(cpu_get_psr(env), 20, 4, icc)); +#endif +} + +static uint32_t do_getpsr(CPUSPARCState *env) +{ +#ifdef TARGET_SPARC64 + const uint64_t TSTATE_CWP = 0x1f; + const uint64_t TSTATE_ICC = 0xfull << 32; + const uint64_t TSTATE_XCC = 0xfull << 36; + const uint32_t PSR_S = 0x00000080u; + const uint32_t PSR_V8PLUS = 0xff000000u; + uint64_t tstate = sparc64_tstate(env); + + /* See <asm/psrcompat.h>, tstate_to_psr. */ + return ((tstate & TSTATE_CWP) | + PSR_S | + ((tstate & TSTATE_ICC) >> 12) | + ((tstate & TSTATE_XCC) >> 20) | + PSR_V8PLUS); +#else + return (cpu_get_psr(env) & (PSR_ICC | PSR_CWP)) | PSR_S; +#endif +} + +/* Avoid ifdefs below for the abi32 and abi64 paths. */ +#ifdef TARGET_ABI32 +#define TARGET_TT_SYSCALL (TT_TRAP + 0x10) /* t_linux */ +#define syscall_cc psr +#else +#define TARGET_TT_SYSCALL (TT_TRAP + 0x6d) /* tl0_linux64 */ +#define syscall_cc xcc +#endif + +/* Avoid ifdefs below for the v9 and pre-v9 hw traps. */ +#ifdef TARGET_SPARC64 +#define TARGET_TT_SPILL TT_SPILL +#define TARGET_TT_FILL TT_FILL +#else +#define TARGET_TT_SPILL TT_WIN_OVF +#define TARGET_TT_FILL TT_WIN_UNF +#endif + void cpu_loop (CPUSPARCState *env) { CPUState *cs = env_cpu(env); @@ -167,13 +230,7 @@ void cpu_loop (CPUSPARCState *env) } switch (trapnr) { -#ifndef TARGET_SPARC64 - case 0x88: - case 0x90: -#else - case 0x110: - case 0x16d: -#endif + case TARGET_TT_SYSCALL: ret = do_syscall (env, env->gregs[1], env->regwptr[0], env->regwptr[1], env->regwptr[2], env->regwptr[3], @@ -183,67 +240,110 @@ void cpu_loop (CPUSPARCState *env) break; } if ((abi_ulong)ret >= (abi_ulong)(-515)) { -#if defined(TARGET_SPARC64) && !defined(TARGET_ABI32) - env->xcc |= PSR_CARRY; -#else - env->psr |= PSR_CARRY; -#endif + env->syscall_cc |= PSR_CARRY; ret = -ret; } else { -#if defined(TARGET_SPARC64) && !defined(TARGET_ABI32) - env->xcc &= ~PSR_CARRY; -#else - env->psr &= ~PSR_CARRY; -#endif + env->syscall_cc &= ~PSR_CARRY; } env->regwptr[0] = ret; /* next instruction */ env->pc = env->npc; env->npc = env->npc + 4; break; - case 0x83: /* flush windows */ -#ifdef TARGET_ABI32 - case 0x103: -#endif - flush_windows(env); - /* next instruction */ - env->pc = env->npc; - env->npc = env->npc + 4; + + case TT_TRAP + 0x01: /* breakpoint */ + case EXCP_DEBUG: + force_sig_fault(TARGET_SIGTRAP, TARGET_TRAP_BRKPT, env->pc); break; -#ifndef TARGET_SPARC64 - case TT_WIN_OVF: /* window overflow */ - save_window(env); + + case TT_TRAP + 0x02: /* div0 */ + case TT_DIV_ZERO: + force_sig_fault(TARGET_SIGFPE, TARGET_FPE_INTDIV, env->pc); break; - case TT_WIN_UNF: /* window underflow */ - restore_window(env); + + case TT_TRAP + 0x03: /* flush windows */ + flush_windows(env); + next_instruction(env); break; -#else - case TT_SPILL: /* window overflow */ - save_window(env); + + case TT_TRAP + 0x20: /* getcc */ + env->gregs[1] = do_getcc(env); + next_instruction(env); break; - case TT_FILL: /* window underflow */ - restore_window(env); + case TT_TRAP + 0x21: /* setcc */ + do_setcc(env, env->gregs[1]); + next_instruction(env); + break; + case TT_TRAP + 0x22: /* getpsr */ + env->gregs[1] = do_getpsr(env); + next_instruction(env); break; -#ifndef TARGET_ABI32 - case 0x16e: + +#ifdef TARGET_SPARC64 + case TT_TRAP + 0x6e: flush_windows(env); sparc64_get_context(env); break; - case 0x16f: + case TT_TRAP + 0x6f: flush_windows(env); sparc64_set_context(env); break; #endif -#endif + + case TARGET_TT_SPILL: /* window overflow */ + save_window(env); + break; + case TARGET_TT_FILL: /* window underflow */ + restore_window(env); + break; + + case TT_FP_EXCP: + { + int code = TARGET_FPE_FLTUNK; + target_ulong fsr = env->fsr; + + if ((fsr & FSR_FTT_MASK) == FSR_FTT_IEEE_EXCP) { + if (fsr & FSR_NVC) { + code = TARGET_FPE_FLTINV; + } else if (fsr & FSR_OFC) { + code = TARGET_FPE_FLTOVF; + } else if (fsr & FSR_UFC) { + code = TARGET_FPE_FLTUND; + } else if (fsr & FSR_DZC) { + code = TARGET_FPE_FLTDIV; + } else if (fsr & FSR_NXC) { + code = TARGET_FPE_FLTRES; + } + } + force_sig_fault(TARGET_SIGFPE, code, env->pc); + } + break; + case EXCP_INTERRUPT: /* just indicate that signals should be handled asap */ break; case TT_ILL_INSN: force_sig_fault(TARGET_SIGILL, TARGET_ILL_ILLOPC, env->pc); break; - case EXCP_DEBUG: - force_sig_fault(TARGET_SIGTRAP, TARGET_TRAP_BRKPT, env->pc); + case TT_PRIV_INSN: + force_sig_fault(TARGET_SIGILL, TARGET_ILL_PRVOPC, env->pc); + break; + case TT_TOVF: + force_sig_fault(TARGET_SIGEMT, TARGET_EMT_TAGOVF, env->pc); + break; +#ifdef TARGET_SPARC64 + case TT_PRIV_ACT: + /* Note do_privact defers to do_privop. */ + force_sig_fault(TARGET_SIGILL, TARGET_ILL_PRVOPC, env->pc); break; +#else + case TT_NCP_INSN: + force_sig_fault(TARGET_SIGILL, TARGET_ILL_COPROC, env->pc); + break; + case TT_UNIMP_FLUSH: + next_instruction(env); + break; +#endif case EXCP_ATOMIC: cpu_exec_step_atomic(cs); break; |