diff options
Diffstat (limited to 'cpu-exec.c')
| -rw-r--r-- | cpu-exec.c | 676 |
1 files changed, 35 insertions, 641 deletions
diff --git a/cpu-exec.c b/cpu-exec.c index 395cd8cf90..e1de56b397 100644 --- a/cpu-exec.c +++ b/cpu-exec.c @@ -23,22 +23,6 @@ #include "kvm.h" #include "qemu-barrier.h" -#if !defined(CONFIG_SOFTMMU) -#undef EAX -#undef ECX -#undef EDX -#undef EBX -#undef ESP -#undef EBP -#undef ESI -#undef EDI -#undef EIP -#include <signal.h> -#ifdef __linux__ -#include <sys/ucontext.h> -#endif -#endif - #if defined(__sparc__) && !defined(CONFIG_SOLARIS) // Work around ugly bugs in glibc that mangle global register contents #undef env @@ -48,7 +32,6 @@ int tb_invalidated_flag; //#define CONFIG_DEBUG_EXEC -//#define DEBUG_SIGNAL int qemu_cpu_has_work(CPUState *env) { @@ -64,37 +47,17 @@ void cpu_loop_exit(void) /* exit the current TB from a signal handler. The host registers are restored in a state compatible with the CPU emulator */ +#if defined(CONFIG_SOFTMMU) void cpu_resume_from_signal(CPUState *env1, void *puc) { -#if !defined(CONFIG_SOFTMMU) -#ifdef __linux__ - struct ucontext *uc = puc; -#elif defined(__OpenBSD__) - struct sigcontext *uc = puc; -#endif -#endif - env = env1; /* XXX: restore cpu registers saved in host registers */ -#if !defined(CONFIG_SOFTMMU) - if (puc) { - /* XXX: use siglongjmp ? */ -#ifdef __linux__ -#ifdef __ia64 - sigprocmask(SIG_SETMASK, (sigset_t *)&uc->uc_sigmask, NULL); -#else - sigprocmask(SIG_SETMASK, &uc->uc_sigmask, NULL); -#endif -#elif defined(__OpenBSD__) - sigprocmask(SIG_SETMASK, &uc->sc_mask, NULL); -#endif - } -#endif env->exception_index = -1; longjmp(env->jmp_env, 1); } +#endif /* Execute the code without caching the generated code. An interpreter could be used if available. */ @@ -360,10 +323,7 @@ int cpu_exec(CPUState *env1) if (unlikely(interrupt_request)) { if (unlikely(env->singlestep_enabled & SSTEP_NOIRQ)) { /* Mask out external interrupts for this step. */ - interrupt_request &= ~(CPU_INTERRUPT_HARD | - CPU_INTERRUPT_FIQ | - CPU_INTERRUPT_SMI | - CPU_INTERRUPT_NMI); + interrupt_request &= ~CPU_INTERRUPT_SSTEP_MASK; } if (interrupt_request & CPU_INTERRUPT_DEBUG) { env->interrupt_request &= ~CPU_INTERRUPT_DEBUG; @@ -492,9 +452,6 @@ int cpu_exec(CPUState *env1) next_tb = 0; } } - } else if (interrupt_request & CPU_INTERRUPT_TIMER) { - //do_interrupt(0, 0, 0, 0, 0); - env->interrupt_request &= ~CPU_INTERRUPT_TIMER; } #elif defined(TARGET_ARM) if (interrupt_request & CPU_INTERRUPT_FIQ @@ -509,7 +466,7 @@ int cpu_exec(CPUState *env1) jump normally, then does the exception return when the CPU tries to execute code at the magic address. This will cause the magic PC value to be pushed to - the stack if an interrupt occured at the wrong time. + the stack if an interrupt occurred at the wrong time. We avoid this by disabling interrupts when pc contains a magic address. */ if (interrupt_request & CPU_INTERRUPT_HARD @@ -531,9 +488,36 @@ int cpu_exec(CPUState *env1) next_tb = 0; } #elif defined(TARGET_ALPHA) - if (interrupt_request & CPU_INTERRUPT_HARD) { - do_interrupt(env); - next_tb = 0; + { + int idx = -1; + /* ??? This hard-codes the OSF/1 interrupt levels. */ + switch (env->pal_mode ? 7 : env->ps & PS_INT_MASK) { + case 0 ... 3: + if (interrupt_request & CPU_INTERRUPT_HARD) { + idx = EXCP_DEV_INTERRUPT; + } + /* FALLTHRU */ + case 4: + if (interrupt_request & CPU_INTERRUPT_TIMER) { + idx = EXCP_CLK_INTERRUPT; + } + /* FALLTHRU */ + case 5: + if (interrupt_request & CPU_INTERRUPT_SMP) { + idx = EXCP_SMP_INTERRUPT; + } + /* FALLTHRU */ + case 6: + if (interrupt_request & CPU_INTERRUPT_MCHK) { + idx = EXCP_MCHK; + } + } + if (idx >= 0) { + env->exception_index = idx; + env->error_code = 0; + do_interrupt(env); + next_tb = 0; + } } #elif defined(TARGET_CRIS) if (interrupt_request & CPU_INTERRUPT_HARD @@ -569,7 +553,7 @@ int cpu_exec(CPUState *env1) next_tb = 0; } #endif - /* Don't use the cached interupt_request value, + /* Don't use the cached interrupt_request value, do_interrupt may have updated the EXITTB flag. */ if (env->interrupt_request & CPU_INTERRUPT_EXITTB) { env->interrupt_request &= ~CPU_INTERRUPT_EXITTB; @@ -709,593 +693,3 @@ int cpu_exec(CPUState *env1) cpu_single_env = NULL; return ret; } - -/* must only be called from the generated code as an exception can be - generated */ -void tb_invalidate_page_range(target_ulong start, target_ulong end) -{ - /* XXX: cannot enable it yet because it yields to MMU exception - where NIP != read address on PowerPC */ -#if 0 - target_ulong phys_addr; - phys_addr = get_phys_addr_code(env, start); - tb_invalidate_phys_page_range(phys_addr, phys_addr + end - start, 0); -#endif -} - -#if defined(TARGET_I386) && defined(CONFIG_USER_ONLY) - -void cpu_x86_load_seg(CPUX86State *s, int seg_reg, int selector) -{ - CPUX86State *saved_env; - - saved_env = env; - env = s; - if (!(env->cr[0] & CR0_PE_MASK) || (env->eflags & VM_MASK)) { - selector &= 0xffff; - cpu_x86_load_seg_cache(env, seg_reg, selector, - (selector << 4), 0xffff, 0); - } else { - helper_load_seg(seg_reg, selector); - } - env = saved_env; -} - -void cpu_x86_fsave(CPUX86State *s, target_ulong ptr, int data32) -{ - CPUX86State *saved_env; - - saved_env = env; - env = s; - - helper_fsave(ptr, data32); - - env = saved_env; -} - -void cpu_x86_frstor(CPUX86State *s, target_ulong ptr, int data32) -{ - CPUX86State *saved_env; - - saved_env = env; - env = s; - - helper_frstor(ptr, data32); - - env = saved_env; -} - -#endif /* TARGET_I386 */ - -#if !defined(CONFIG_SOFTMMU) - -#if defined(TARGET_I386) -#define EXCEPTION_ACTION raise_exception_err(env->exception_index, env->error_code) -#else -#define EXCEPTION_ACTION cpu_loop_exit() -#endif - -/* 'pc' is the host PC at which the exception was raised. 'address' is - the effective address of the memory exception. 'is_write' is 1 if a - write caused the exception and otherwise 0'. 'old_set' is the - signal set which should be restored */ -static inline int handle_cpu_signal(unsigned long pc, unsigned long address, - int is_write, sigset_t *old_set, - void *puc) -{ - TranslationBlock *tb; - int ret; - - if (cpu_single_env) - env = cpu_single_env; /* XXX: find a correct solution for multithread */ -#if defined(DEBUG_SIGNAL) - qemu_printf("qemu: SIGSEGV pc=0x%08lx address=%08lx w=%d oldset=0x%08lx\n", - pc, address, is_write, *(unsigned long *)old_set); -#endif - /* XXX: locking issue */ - if (is_write && page_unprotect(h2g(address), pc, puc)) { - return 1; - } - - /* see if it is an MMU fault */ - ret = cpu_handle_mmu_fault(env, address, is_write, MMU_USER_IDX, 0); - if (ret < 0) - return 0; /* not an MMU fault */ - if (ret == 0) - return 1; /* the MMU fault was handled without causing real CPU fault */ - /* now we have a real cpu fault */ - tb = tb_find_pc(pc); - if (tb) { - /* the PC is inside the translated code. It means that we have - a virtual CPU fault */ - cpu_restore_state(tb, env, pc); - } - - /* we restore the process signal mask as the sigreturn should - do it (XXX: use sigsetjmp) */ - sigprocmask(SIG_SETMASK, old_set, NULL); - EXCEPTION_ACTION; - - /* never comes here */ - return 1; -} - -#if defined(__i386__) - -#if defined(__APPLE__) -# include <sys/ucontext.h> - -# define EIP_sig(context) (*((unsigned long*)&(context)->uc_mcontext->ss.eip)) -# define TRAP_sig(context) ((context)->uc_mcontext->es.trapno) -# define ERROR_sig(context) ((context)->uc_mcontext->es.err) -# define MASK_sig(context) ((context)->uc_sigmask) -#elif defined (__NetBSD__) -# include <ucontext.h> - -# define EIP_sig(context) ((context)->uc_mcontext.__gregs[_REG_EIP]) -# define TRAP_sig(context) ((context)->uc_mcontext.__gregs[_REG_TRAPNO]) -# define ERROR_sig(context) ((context)->uc_mcontext.__gregs[_REG_ERR]) -# define MASK_sig(context) ((context)->uc_sigmask) -#elif defined (__FreeBSD__) || defined(__DragonFly__) -# include <ucontext.h> - -# define EIP_sig(context) (*((unsigned long*)&(context)->uc_mcontext.mc_eip)) -# define TRAP_sig(context) ((context)->uc_mcontext.mc_trapno) -# define ERROR_sig(context) ((context)->uc_mcontext.mc_err) -# define MASK_sig(context) ((context)->uc_sigmask) -#elif defined(__OpenBSD__) -# define EIP_sig(context) ((context)->sc_eip) -# define TRAP_sig(context) ((context)->sc_trapno) -# define ERROR_sig(context) ((context)->sc_err) -# define MASK_sig(context) ((context)->sc_mask) -#else -# define EIP_sig(context) ((context)->uc_mcontext.gregs[REG_EIP]) -# define TRAP_sig(context) ((context)->uc_mcontext.gregs[REG_TRAPNO]) -# define ERROR_sig(context) ((context)->uc_mcontext.gregs[REG_ERR]) -# define MASK_sig(context) ((context)->uc_sigmask) -#endif - -int cpu_signal_handler(int host_signum, void *pinfo, - void *puc) -{ - siginfo_t *info = pinfo; -#if defined(__NetBSD__) || defined (__FreeBSD__) || defined(__DragonFly__) - ucontext_t *uc = puc; -#elif defined(__OpenBSD__) - struct sigcontext *uc = puc; -#else - struct ucontext *uc = puc; -#endif - unsigned long pc; - int trapno; - -#ifndef REG_EIP -/* for glibc 2.1 */ -#define REG_EIP EIP -#define REG_ERR ERR -#define REG_TRAPNO TRAPNO -#endif - pc = EIP_sig(uc); - trapno = TRAP_sig(uc); - return handle_cpu_signal(pc, (unsigned long)info->si_addr, - trapno == 0xe ? - (ERROR_sig(uc) >> 1) & 1 : 0, - &MASK_sig(uc), puc); -} - -#elif defined(__x86_64__) - -#ifdef __NetBSD__ -#define PC_sig(context) _UC_MACHINE_PC(context) -#define TRAP_sig(context) ((context)->uc_mcontext.__gregs[_REG_TRAPNO]) -#define ERROR_sig(context) ((context)->uc_mcontext.__gregs[_REG_ERR]) -#define MASK_sig(context) ((context)->uc_sigmask) -#elif defined(__OpenBSD__) -#define PC_sig(context) ((context)->sc_rip) -#define TRAP_sig(context) ((context)->sc_trapno) -#define ERROR_sig(context) ((context)->sc_err) -#define MASK_sig(context) ((context)->sc_mask) -#elif defined (__FreeBSD__) || defined(__DragonFly__) -#include <ucontext.h> - -#define PC_sig(context) (*((unsigned long*)&(context)->uc_mcontext.mc_rip)) -#define TRAP_sig(context) ((context)->uc_mcontext.mc_trapno) -#define ERROR_sig(context) ((context)->uc_mcontext.mc_err) -#define MASK_sig(context) ((context)->uc_sigmask) -#else -#define PC_sig(context) ((context)->uc_mcontext.gregs[REG_RIP]) -#define TRAP_sig(context) ((context)->uc_mcontext.gregs[REG_TRAPNO]) -#define ERROR_sig(context) ((context)->uc_mcontext.gregs[REG_ERR]) -#define MASK_sig(context) ((context)->uc_sigmask) -#endif - -int cpu_signal_handler(int host_signum, void *pinfo, - void *puc) -{ - siginfo_t *info = pinfo; - unsigned long pc; -#if defined(__NetBSD__) || defined (__FreeBSD__) || defined(__DragonFly__) - ucontext_t *uc = puc; -#elif defined(__OpenBSD__) - struct sigcontext *uc = puc; -#else - struct ucontext *uc = puc; -#endif - - pc = PC_sig(uc); - return handle_cpu_signal(pc, (unsigned long)info->si_addr, - TRAP_sig(uc) == 0xe ? - (ERROR_sig(uc) >> 1) & 1 : 0, - &MASK_sig(uc), puc); -} - -#elif defined(_ARCH_PPC) - -/*********************************************************************** - * signal context platform-specific definitions - * From Wine - */ -#ifdef linux -/* All Registers access - only for local access */ -# define REG_sig(reg_name, context) ((context)->uc_mcontext.regs->reg_name) -/* Gpr Registers access */ -# define GPR_sig(reg_num, context) REG_sig(gpr[reg_num], context) -# define IAR_sig(context) REG_sig(nip, context) /* Program counter */ -# define MSR_sig(context) REG_sig(msr, context) /* Machine State Register (Supervisor) */ -# define CTR_sig(context) REG_sig(ctr, context) /* Count register */ -# define XER_sig(context) REG_sig(xer, context) /* User's integer exception register */ -# define LR_sig(context) REG_sig(link, context) /* Link register */ -# define CR_sig(context) REG_sig(ccr, context) /* Condition register */ -/* Float Registers access */ -# define FLOAT_sig(reg_num, context) (((double*)((char*)((context)->uc_mcontext.regs+48*4)))[reg_num]) -# define FPSCR_sig(context) (*(int*)((char*)((context)->uc_mcontext.regs+(48+32*2)*4))) -/* Exception Registers access */ -# define DAR_sig(context) REG_sig(dar, context) -# define DSISR_sig(context) REG_sig(dsisr, context) -# define TRAP_sig(context) REG_sig(trap, context) -#endif /* linux */ - -#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) -#include <ucontext.h> -# define IAR_sig(context) ((context)->uc_mcontext.mc_srr0) -# define MSR_sig(context) ((context)->uc_mcontext.mc_srr1) -# define CTR_sig(context) ((context)->uc_mcontext.mc_ctr) -# define XER_sig(context) ((context)->uc_mcontext.mc_xer) -# define LR_sig(context) ((context)->uc_mcontext.mc_lr) -# define CR_sig(context) ((context)->uc_mcontext.mc_cr) -/* Exception Registers access */ -# define DAR_sig(context) ((context)->uc_mcontext.mc_dar) -# define DSISR_sig(context) ((context)->uc_mcontext.mc_dsisr) -# define TRAP_sig(context) ((context)->uc_mcontext.mc_exc) -#endif /* __FreeBSD__|| __FreeBSD_kernel__ */ - -#ifdef __APPLE__ -# include <sys/ucontext.h> -typedef struct ucontext SIGCONTEXT; -/* All Registers access - only for local access */ -# define REG_sig(reg_name, context) ((context)->uc_mcontext->ss.reg_name) -# define FLOATREG_sig(reg_name, context) ((context)->uc_mcontext->fs.reg_name) -# define EXCEPREG_sig(reg_name, context) ((context)->uc_mcontext->es.reg_name) -# define VECREG_sig(reg_name, context) ((context)->uc_mcontext->vs.reg_name) -/* Gpr Registers access */ -# define GPR_sig(reg_num, context) REG_sig(r##reg_num, context) -# define IAR_sig(context) REG_sig(srr0, context) /* Program counter */ -# define MSR_sig(context) REG_sig(srr1, context) /* Machine State Register (Supervisor) */ -# define CTR_sig(context) REG_sig(ctr, context) -# define XER_sig(context) REG_sig(xer, context) /* Link register */ -# define LR_sig(context) REG_sig(lr, context) /* User's integer exception register */ -# define CR_sig(context) REG_sig(cr, context) /* Condition register */ -/* Float Registers access */ -# define FLOAT_sig(reg_num, context) FLOATREG_sig(fpregs[reg_num], context) -# define FPSCR_sig(context) ((double)FLOATREG_sig(fpscr, context)) -/* Exception Registers access */ -# define DAR_sig(context) EXCEPREG_sig(dar, context) /* Fault registers for coredump */ -# define DSISR_sig(context) EXCEPREG_sig(dsisr, context) -# define TRAP_sig(context) EXCEPREG_sig(exception, context) /* number of powerpc exception taken */ -#endif /* __APPLE__ */ - -int cpu_signal_handler(int host_signum, void *pinfo, - void *puc) -{ - siginfo_t *info = pinfo; -#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) - ucontext_t *uc = puc; -#else - struct ucontext *uc = puc; -#endif - unsigned long pc; - int is_write; - - pc = IAR_sig(uc); - is_write = 0; -#if 0 - /* ppc 4xx case */ - if (DSISR_sig(uc) & 0x00800000) - is_write = 1; -#else - if (TRAP_sig(uc) != 0x400 && (DSISR_sig(uc) & 0x02000000)) - is_write = 1; -#endif - return handle_cpu_signal(pc, (unsigned long)info->si_addr, - is_write, &uc->uc_sigmask, puc); -} - -#elif defined(__alpha__) - -int cpu_signal_handler(int host_signum, void *pinfo, - void *puc) -{ - siginfo_t *info = pinfo; - struct ucontext *uc = puc; - uint32_t *pc = uc->uc_mcontext.sc_pc; - uint32_t insn = *pc; - int is_write = 0; - - /* XXX: need kernel patch to get write flag faster */ - switch (insn >> 26) { - case 0x0d: // stw - case 0x0e: // stb - case 0x0f: // stq_u - case 0x24: // stf - case 0x25: // stg - case 0x26: // sts - case 0x27: // stt - case 0x2c: // stl - case 0x2d: // stq - case 0x2e: // stl_c - case 0x2f: // stq_c - is_write = 1; - } - - return handle_cpu_signal(pc, (unsigned long)info->si_addr, - is_write, &uc->uc_sigmask, puc); -} -#elif defined(__sparc__) - -int cpu_signal_handler(int host_signum, void *pinfo, - void *puc) -{ - siginfo_t *info = pinfo; - int is_write; - uint32_t insn; -#if !defined(__arch64__) || defined(CONFIG_SOLARIS) - uint32_t *regs = (uint32_t *)(info + 1); - void *sigmask = (regs + 20); - /* XXX: is there a standard glibc define ? */ - unsigned long pc = regs[1]; -#else -#ifdef __linux__ - struct sigcontext *sc = puc; - unsigned long pc = sc->sigc_regs.tpc; - void *sigmask = (void *)sc->sigc_mask; -#elif defined(__OpenBSD__) - struct sigcontext *uc = puc; - unsigned long pc = uc->sc_pc; - void *sigmask = (void *)(long)uc->sc_mask; -#endif -#endif - - /* XXX: need kernel patch to get write flag faster */ - is_write = 0; - insn = *(uint32_t *)pc; - if ((insn >> 30) == 3) { - switch((insn >> 19) & 0x3f) { - case 0x05: // stb - case 0x15: // stba - case 0x06: // sth - case 0x16: // stha - case 0x04: // st - case 0x14: // sta - case 0x07: // std - case 0x17: // stda - case 0x0e: // stx - case 0x1e: // stxa - case 0x24: // stf - case 0x34: // stfa - case 0x27: // stdf - case 0x37: // stdfa - case 0x26: // stqf - case 0x36: // stqfa - case 0x25: // stfsr - case 0x3c: // casa - case 0x3e: // casxa - is_write = 1; - break; - } - } - return handle_cpu_signal(pc, (unsigned long)info->si_addr, - is_write, sigmask, NULL); -} - -#elif defined(__arm__) - -int cpu_signal_handler(int host_signum, void *pinfo, - void *puc) -{ - siginfo_t *info = pinfo; - struct ucontext *uc = puc; - unsigned long pc; - int is_write; - -#if (__GLIBC__ < 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ <= 3)) - pc = uc->uc_mcontext.gregs[R15]; -#else - pc = uc->uc_mcontext.arm_pc; -#endif - /* XXX: compute is_write */ - is_write = 0; - return handle_cpu_signal(pc, (unsigned long)info->si_addr, - is_write, - &uc->uc_sigmask, puc); -} - -#elif defined(__mc68000) - -int cpu_signal_handler(int host_signum, void *pinfo, - void *puc) -{ - siginfo_t *info = pinfo; - struct ucontext *uc = puc; - unsigned long pc; - int is_write; - - pc = uc->uc_mcontext.gregs[16]; - /* XXX: compute is_write */ - is_write = 0; - return handle_cpu_signal(pc, (unsigned long)info->si_addr, - is_write, - &uc->uc_sigmask, puc); -} - -#elif defined(__ia64) - -#ifndef __ISR_VALID - /* This ought to be in <bits/siginfo.h>... */ -# define __ISR_VALID 1 -#endif - -int cpu_signal_handler(int host_signum, void *pinfo, void *puc) -{ - siginfo_t *info = pinfo; - struct ucontext *uc = puc; - unsigned long ip; - int is_write = 0; - - ip = uc->uc_mcontext.sc_ip; - switch (host_signum) { - case SIGILL: - case SIGFPE: - case SIGSEGV: - case SIGBUS: - case SIGTRAP: - if (info->si_code && (info->si_segvflags & __ISR_VALID)) - /* ISR.W (write-access) is bit 33: */ - is_write = (info->si_isr >> 33) & 1; - break; - - default: - break; - } - return handle_cpu_signal(ip, (unsigned long)info->si_addr, - is_write, - (sigset_t *)&uc->uc_sigmask, puc); -} - -#elif defined(__s390__) - -int cpu_signal_handler(int host_signum, void *pinfo, - void *puc) -{ - siginfo_t *info = pinfo; - struct ucontext *uc = puc; - unsigned long pc; - uint16_t *pinsn; - int is_write = 0; - - pc = uc->uc_mcontext.psw.addr; - - /* ??? On linux, the non-rt signal handler has 4 (!) arguments instead - of the normal 2 arguments. The 3rd argument contains the "int_code" - from the hardware which does in fact contain the is_write value. - The rt signal handler, as far as I can tell, does not give this value - at all. Not that we could get to it from here even if it were. */ - /* ??? This is not even close to complete, since it ignores all - of the read-modify-write instructions. */ - pinsn = (uint16_t *)pc; - switch (pinsn[0] >> 8) { - case 0x50: /* ST */ - case 0x42: /* STC */ - case 0x40: /* STH */ - is_write = 1; - break; - case 0xc4: /* RIL format insns */ - switch (pinsn[0] & 0xf) { - case 0xf: /* STRL */ - case 0xb: /* STGRL */ - case 0x7: /* STHRL */ - is_write = 1; - } - break; - case 0xe3: /* RXY format insns */ - switch (pinsn[2] & 0xff) { - case 0x50: /* STY */ - case 0x24: /* STG */ - case 0x72: /* STCY */ - case 0x70: /* STHY */ - case 0x8e: /* STPQ */ - case 0x3f: /* STRVH */ - case 0x3e: /* STRV */ - case 0x2f: /* STRVG */ - is_write = 1; - } - break; - } - return handle_cpu_signal(pc, (unsigned long)info->si_addr, - is_write, &uc->uc_sigmask, puc); -} - -#elif defined(__mips__) - -int cpu_signal_handler(int host_signum, void *pinfo, - void *puc) -{ - siginfo_t *info = pinfo; - struct ucontext *uc = puc; - greg_t pc = uc->uc_mcontext.pc; - int is_write; - - /* XXX: compute is_write */ - is_write = 0; - return handle_cpu_signal(pc, (unsigned long)info->si_addr, - is_write, &uc->uc_sigmask, puc); -} - -#elif defined(__hppa__) - -int cpu_signal_handler(int host_signum, void *pinfo, - void *puc) -{ - struct siginfo *info = pinfo; - struct ucontext *uc = puc; - unsigned long pc = uc->uc_mcontext.sc_iaoq[0]; - uint32_t insn = *(uint32_t *)pc; - int is_write = 0; - - /* XXX: need kernel patch to get write flag faster. */ - switch (insn >> 26) { - case 0x1a: /* STW */ - case 0x19: /* STH */ - case 0x18: /* STB */ - case 0x1b: /* STWM */ - is_write = 1; - break; - - case 0x09: /* CSTWX, FSTWX, FSTWS */ - case 0x0b: /* CSTDX, FSTDX, FSTDS */ - /* Distinguish from coprocessor load ... */ - is_write = (insn >> 9) & 1; - break; - - case 0x03: - switch ((insn >> 6) & 15) { - case 0xa: /* STWS */ - case 0x9: /* STHS */ - case 0x8: /* STBS */ - case 0xe: /* STWAS */ - case 0xc: /* STBYS */ - is_write = 1; - } - break; - } - - return handle_cpu_signal(pc, (unsigned long)info->si_addr, - is_write, &uc->uc_sigmask, puc); -} - -#else - -#error host CPU specific signal handler needed - -#endif - -#endif /* !defined(CONFIG_SOFTMMU) */ |