diff options
Diffstat (limited to 'target/i386/tcg/user/excp_helper.c')
| -rw-r--r-- | target/i386/tcg/user/excp_helper.c | 23 |
1 files changed, 17 insertions, 6 deletions
diff --git a/target/i386/tcg/user/excp_helper.c b/target/i386/tcg/user/excp_helper.c index a89b5228fd..cd507e2a1b 100644 --- a/target/i386/tcg/user/excp_helper.c +++ b/target/i386/tcg/user/excp_helper.c @@ -22,18 +22,29 @@ #include "exec/exec-all.h" #include "tcg/helper-tcg.h" -bool x86_cpu_tlb_fill(CPUState *cs, vaddr addr, int size, - MMUAccessType access_type, int mmu_idx, - bool probe, uintptr_t retaddr) +void x86_cpu_record_sigsegv(CPUState *cs, vaddr addr, + MMUAccessType access_type, + bool maperr, uintptr_t ra) { X86CPU *cpu = X86_CPU(cs); CPUX86State *env = &cpu->env; + /* + * The error_code that hw reports as part of the exception frame + * is copied to linux sigcontext.err. The exception_index is + * copied to linux sigcontext.trapno. Short of inventing a new + * place to store the trapno, we cannot let our caller raise the + * signal and set exception_index to EXCP_INTERRUPT. + */ env->cr[2] = addr; - env->error_code = (access_type == MMU_DATA_STORE) << PG_ERROR_W_BIT; - env->error_code |= PG_ERROR_U_MASK; + env->error_code = ((access_type == MMU_DATA_STORE) << PG_ERROR_W_BIT) + | (maperr ? 0 : PG_ERROR_P_MASK) + | PG_ERROR_U_MASK; cs->exception_index = EXCP0E_PAGE; + + /* Disable do_interrupt_user. */ env->exception_is_int = 0; env->exception_next_eip = -1; - cpu_loop_exit_restore(cs, retaddr); + + cpu_loop_exit_restore(cs, ra); } |