void cpu_loop(CPUPPCState *env) { target_siginfo_t info; int trapnr; uint32_t ret; for(;;) { trapnr = cpu_ppc_exec(env); switch(trapnr) { case POWERPC_EXCP_NONE: /* Just go on */ break; case POWERPC_EXCP_CRITICAL: /* Critical input */ cpu_abort(env, "Critical interrupt while in user mode. " "Aborting\n"); break; case POWERPC_EXCP_MCHECK: /* Machine check exception */ cpu_abort(env, "Machine check exception while in user mode. " "Aborting\n"); break; case POWERPC_EXCP_DSI: /* Data storage exception */ EXCP_DUMP(env, "Invalid data memory access: 0x" ADDRX "\n", env->spr[SPR_DAR]); /* XXX: check this. Seems bugged */ switch (env->error_code & 0xFF000000) { case 0x40000000: info.si_signo = TARGET_SIGSEGV; info.si_errno = 0; info.si_code = TARGET_SEGV_MAPERR; break; case 0x04000000: info.si_signo = TARGET_SIGILL; info.si_errno = 0; info.si_code = TARGET_ILL_ILLADR; break; case 0x08000000: info.si_signo = TARGET_SIGSEGV; info.si_errno = 0; info.si_code = TARGET_SEGV_ACCERR; break; default: /* Let's send a regular segfault... */ EXCP_DUMP(env, "Invalid segfault errno (%02x)\n", env->error_code); info.si_signo = TARGET_SIGSEGV; info.si_errno = 0; info.si_code = TARGET_SEGV_MAPERR; break; } info._sifields._sigfault._addr = env->nip; queue_signal(info.si_signo, &info); break; case POWERPC_EXCP_ISI: /* Instruction storage exception */ EXCP_DUMP(env, "Invalid instruction fetch: 0x\n" ADDRX "\n", env->spr[SPR_SRR0]); /* XXX: check this */ switch (env->error_code & 0xFF000000) { case 0x40000000: info.si_signo = TARGET_SIGSEGV; info.si_errno = 0; info.si_code = TARGET_SEGV_MAPERR; break; case 0x10000000: case 0x08000000: info.si_signo = TARGET_SIGSEGV; info.si_errno = 0; info.si_code = TARGET_SEGV_ACCERR; break; default: /* Let's send a regular segfault... */ EXCP_DUMP(env, "Invalid segfault errno (%02x)\n", env->error_code); info.si_signo = TARGET_SIGSEGV; info.si_errno = 0; info.si_code = TARGET_SEGV_MAPERR; break; } info._sifields._sigfault._addr = env->nip - 4; queue_signal(info.si_signo, &info); break; case POWERPC_EXCP_EXTERNAL: /* External input */ cpu_abort(env, "External interrupt while in user mode. " "Aborting\n"); break; case POWERPC_EXCP_ALIGN: /* Alignment exception */ EXCP_DUMP(env, "Unaligned memory access\n"); /* XXX: check this */ info.si_signo = TARGET_SIGBUS; info.si_errno = 0; info.si_code = TARGET_BUS_ADRALN; info._sifields._sigfault._addr = env->nip - 4; queue_signal(info.si_signo, &info); break; case POWERPC_EXCP_PROGRAM: /* Program exception */ /* XXX: check this */ switch (env->error_code & ~0xF) { case POWERPC_EXCP_FP: EXCP_DUMP(env, "Floating point program exception\n"); info.si_signo = TARGET_SIGFPE; info.si_errno = 0; switch (env->error_code & 0xF) { case POWERPC_EXCP_FP_OX: info.si_code = TARGET_FPE_FLTOVF; break; case POWERPC_EXCP_FP_UX: info.si_code = TARGET_FPE_FLTUND; break; case POWERPC_EXCP_FP_ZX: case POWERPC_EXCP_FP_VXZDZ: info.si_code = TARGET_FPE_FLTDIV; break; case POWERPC_EXCP_FP_XX: info.si_code = TARGET_FPE_FLTRES; break; case POWERPC_EXCP_FP_VXSOFT: info.si_code = TARGET_FPE_FLTINV; break; case POWERPC_EXCP_FP_VXSNAN: case POWERPC_EXCP_FP_VXISI: case POWERPC_EXCP_FP_VXIDI: case POWERPC_EXCP_FP_VXIMZ: case POWERPC_EXCP_FP_VXVC: case POWERPC_EXCP_FP_VXSQRT: case POWERPC_EXCP_FP_VXCVI: info.si_code = TARGET_FPE_FLTSUB; break; default: EXCP_DUMP(env, "Unknown floating point exception (%02x)\n", env->error_code); break; } break; case POWERPC_EXCP_INVAL: EXCP_DUMP(env, "Invalid instruction\n"); info.si_signo = TARGET_SIGILL; info.si_errno = 0; switch (env->error_code & 0xF) { case POWERPC_EXCP_INVAL_INVAL: info.si_code = TARGET_ILL_ILLOPC; break; case POWERPC_EXCP_INVAL_LSWX: info.si_code = TARGET_ILL_ILLOPN; break; case POWERPC_EXCP_INVAL_SPR: info.si_code = TARGET_ILL_PRVREG; break; case POWERPC_EXCP_INVAL_FP: info.si_code = TARGET_ILL_COPROC; break; default: EXCP_DUMP(env, "Unknown invalid operation (%02x)\n", env->error_code & 0xF); info.si_code = TARGET_ILL_ILLADR; break; } break; case POWERPC_EXCP_PRIV: EXCP_DUMP(env, "Privilege violation\n"); info.si_signo = TARGET_SIGILL; info.si_errno = 0; switch (env->error_code & 0xF) { case POWERPC_EXCP_PRIV_OPC: info.si_code = TARGET_ILL_PRVOPC; break; case POWERPC_EXCP_PRIV_REG: info.si_code = TARGET_ILL_PRVREG; break; default: EXCP_DUMP(env, "Unknown privilege violation (%02x)\n", env->error_code & 0xF); info.si_code = TARGET_ILL_PRVOPC; break; } break; case POWERPC_EXCP_TRAP: cpu_abort(env, "Tried to call a TRAP\n"); break; default: /* Should not happen ! */ cpu_abort(env, "Unknown program exception (%02x)\n", env->error_code); break; } info._sifields._sigfault._addr = env->nip - 4; queue_signal(info.si_signo, &info); break; case POWERPC_EXCP_FPU: /* Floating-point unavailable exception */ EXCP_DUMP(env, "No floating point allowed\n"); info.si_signo = TARGET_SIGILL; info.si_errno = 0; info.si_code = TARGET_ILL_COPROC; info._sifields._sigfault._addr = env->nip - 4; queue_signal(info.si_signo, &info); break; case POWERPC_EXCP_SYSCALL: /* System call exception */ cpu_abort(env, "Syscall exception while in user mode. " "Aborting\n"); break; case POWERPC_EXCP_APU: /* Auxiliary processor unavailable */ EXCP_DUMP(env, "No APU instruction allowed\n"); info.si_signo = TARGET_SIGILL; info.si_errno = 0; info.si_code = TARGET_ILL_COPROC; info._sifields._sigfault._addr = env->nip - 4; queue_signal(info.si_signo, &info); break; case POWERPC_EXCP_DECR: /* Decrementer exception */ cpu_abort(env, "Decrementer interrupt while in user mode. " "Aborting\n"); break; case POWERPC_EXCP_FIT: /* Fixed-interval timer interrupt */ cpu_abort(env, "Fix interval timer interrupt while in user mode. " "Aborting\n"); break; case POWERPC_EXCP_WDT: /* Watchdog timer interrupt */ cpu_abort(env, "Watchdog timer interrupt while in user mode. " "Aborting\n"); break; case POWERPC_EXCP_DTLB: /* Data TLB error */ cpu_abort(env, "Data TLB exception while in user mode. " "Aborting\n"); break; case POWERPC_EXCP_ITLB: /* Instruction TLB error */ cpu_abort(env, "Instruction TLB exception while in user mode. " "Aborting\n"); break; case POWERPC_EXCP_DEBUG: /* Debug interrupt */ /* XXX: check this */ { int sig; sig = gdb_handlesig(env, TARGET_SIGTRAP); if (sig) { info.si_signo = sig; info.si_errno = 0; info.si_code = TARGET_TRAP_BRKPT; queue_signal(info.si_signo, &info); } } break; case POWERPC_EXCP_SPEU: /* SPE/embedded floating-point unavail. */ EXCP_DUMP(env, "No SPE/floating-point instruction allowed\n"); info.si_signo = TARGET_SIGILL; info.si_errno = 0; info.si_code = TARGET_ILL_COPROC; info._sifields._sigfault._addr = env->nip - 4; queue_signal(info.si_signo, &info); break; case POWERPC_EXCP_EFPDI: /* Embedded floating-point data IRQ */ cpu_abort(env, "Embedded floating-point data IRQ not handled\n"); break; case POWERPC_EXCP_EFPRI: /* Embedded floating-point round IRQ */ cpu_abort(env, "Embedded floating-point round IRQ not handled\n"); break; case POWERPC_EXCP_EPERFM: /* Embedded performance monitor IRQ */ cpu_abort(env, "Performance monitor exception not handled\n"); break; case POWERPC_EXCP_DOORI: /* Embedded doorbell interrupt */ cpu_abort(env, "Doorbell interrupt while in user mode. " "Aborting\n"); break; case POWERPC_EXCP_DOORCI: /* Embedded doorbell critical interrupt */ cpu_abort(env, "Doorbell critical interrupt while in user mode. " "Aborting\n"); break; case POWERPC_EXCP_RESET: /* System reset exception */ cpu_abort(env, "Reset interrupt while in user mode. " "Aborting\n"); break; #if defined(TARGET_PPC64) && !defined(TARGET_ABI32) /* PowerPC 64 */ case POWERPC_EXCP_DSEG: /* Data segment exception */ cpu_abort(env, "Data segment exception while in user mode. " "Aborting\n"); break; case POWERPC_EXCP_ISEG: /* Instruction segment exception */ cpu_abort(env, "Instruction segment exception " "while in user mode. Aborting\n"); break; #endif /* defined(TARGET_PPC64) && !defined(TARGET_ABI32) */ #if defined(TARGET_PPC64H) && !defined(TARGET_ABI32) /* PowerPC 64 with hypervisor mode support */ case POWERPC_EXCP_HDECR: /* Hypervisor decrementer exception */ cpu_abort(env, "Hypervisor decrementer interrupt " "while in user mode. Aborting\n"); break; #endif /* defined(TARGET_PPC64H) && !defined(TARGET_ABI32) */ case POWERPC_EXCP_TRACE: /* Trace exception */ /* Nothing to do: * we use this exception to emulate step-by-step execution mode. */ break; #if defined(TARGET_PPC64H) && !defined(TARGET_ABI32) /* PowerPC 64 with hypervisor mode support */ case POWERPC_EXCP_HDSI: /* Hypervisor data storage exception */ cpu_abort(env, "Hypervisor data storage exception " "while in user mode. Aborting\n"); break; case POWERPC_EXCP_HISI: /* Hypervisor instruction storage excp */ cpu_abort(env, "Hypervisor instruction storage exception " "while in user mode. Aborting\n"); break; case POWERPC_EXCP_HDSEG: /* Hypervisor data segment exception */ cpu_abort(env, "Hypervisor data segment exception " "while in user mode. Aborting\n"); break; case POWERPC_EXCP_HISEG: /* Hypervisor instruction segment excp */ cpu_abort(env, "Hypervisor instruction segment exception " "while in user mode. Aborting\n"); break; #endif /* defined(TARGET_PPC64H) && !defined(TARGET_ABI32) */ case POWERPC_EXCP_VPU: /* Vector unavailable exception */ EXCP_DUMP(env, "No Altivec instructions allowed\n"); info.si_signo = TARGET_SIGILL; info.si_errno = 0; info.si_code = TARGET_ILL_COPROC; info._sifields._sigfault._addr = env->nip - 4; queue_signal(info.si_signo, &info); break; case POWERPC_EXCP_PIT: /* Programmable interval timer IRQ */ cpu_abort(env, "Programable interval timer interrupt " "while in user mode. Aborting\n"); break; case POWERPC_EXCP_IO: /* IO error exception */ cpu_abort(env, "IO error exception while in user mode. " "Aborting\n"); break; case POWERPC_EXCP_RUNM: /* Run mode exception */ cpu_abort(env, "Run mode exception while in user mode. " "Aborting\n"); break; case POWERPC_EXCP_EMUL: /* Emulation trap exception */ cpu_abort(env, "Emulation trap exception not handled\n"); break; case POWERPC_EXCP_IFTLB: /* Instruction fetch TLB error */ cpu_abort(env, "Instruction fetch TLB exception " "while in user-mode. Aborting"); break; case POWERPC_EXCP_DLTLB: /* Data load TLB miss */ cpu_abort(env, "Data load TLB exception while in user-mode. " "Aborting"); break; case POWERPC_EXCP_DSTLB: /* Data store TLB miss */ cpu_abort(env, "Data store TLB exception while in user-mode. " "Aborting"); break; case POWERPC_EXCP_FPA: /* Floating-point assist exception */ cpu_abort(env, "Floating-point assist exception not handled\n"); break; case POWERPC_EXCP_IABR: /* Instruction address breakpoint */ cpu_abort(env, "Instruction address breakpoint exception " "not handled\n"); break; case POWERPC_EXCP_SMI: /* System management interrupt */ cpu_abort(env, "System management interrupt while in user mode. " "Aborting\n"); break; case POWERPC_EXCP_THERM: /* Thermal interrupt */ cpu_abort(env, "Thermal interrupt interrupt while in user mode. " "Aborting\n"); break; case POWERPC_EXCP_PERFM: /* Embedded performance monitor IRQ */ cpu_abort(env, "Performance monitor exception not handled\n"); break; case POWERPC_EXCP_VPUA: /* Vector assist exception */ cpu_abort(env, "Vector assist exception not handled\n"); break; case POWERPC_EXCP_SOFTP: /* Soft patch exception */ cpu_abort(env, "Soft patch exception not handled\n"); break; case POWERPC_EXCP_MAINT: /* Maintenance exception */ cpu_abort(env, "Maintenance exception while in user mode. " "Aborting\n"); break; case POWERPC_EXCP_STOP: /* stop translation */ /* We did invalidate the instruction cache. Go on */ break; case POWERPC_EXCP_BRANCH: /* branch instruction: */ /* We just stopped because of a branch. Go on */ break; case POWERPC_EXCP_SYSCALL_USER: /* system call in user-mode emulation */ /* WARNING: * PPC ABI uses overflow flag in cr0 to signal an error * in syscalls. */ #if 0 printf("syscall %d 0x%08x 0x%08x 0x%08x 0x%08x\n", env->gpr[0], env->gpr[3], env->gpr[4], env->gpr[5], env->gpr[6]); #endif env->crf[0] &= ~0x1; ret = do_syscall(env, env->gpr[0], env->gpr[3], env->gpr[4], env->gpr[5], env->gpr[6], env->gpr[7], env->gpr[8]); if (ret > (uint32_t)(-515)) { env->crf[0] |= 0x1; ret = -ret; } env->gpr[3] = ret; #if 0 printf("syscall returned 0x%08x (%d)\n", ret, ret); #endif break; case EXCP_INTERRUPT: /* just indicate that signals should be handled asap */ break; default: cpu_abort(env, "Unknown exception 0x%d. Aborting\n", trapnr); break; } process_pending_signals(env); } }