diff options
Diffstat (limited to 'sys/ia64/ia32/ia32_trap.c')
-rw-r--r-- | sys/ia64/ia32/ia32_trap.c | 282 |
1 files changed, 0 insertions, 282 deletions
diff --git a/sys/ia64/ia32/ia32_trap.c b/sys/ia64/ia32/ia32_trap.c deleted file mode 100644 index cea8f92..0000000 --- a/sys/ia64/ia32/ia32_trap.c +++ /dev/null @@ -1,282 +0,0 @@ -/*- - * Copyright (c) 2004 Marcel Moolenaar - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES - * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. - * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT - * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF - * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -#include <sys/cdefs.h> -__FBSDID("$FreeBSD$"); - -#include <sys/param.h> -#include <sys/systm.h> -#include <sys/ktr.h> -#include <sys/sysproto.h> -#include <sys/kernel.h> -#include <sys/lock.h> -#include <sys/mutex.h> -#include <sys/pioctl.h> -#include <sys/proc.h> -#include <sys/ptrace.h> -#include <sys/signalvar.h> -#include <sys/syscall.h> -#include <sys/sysent.h> -#include <machine/cpu.h> -#include <machine/fpu.h> -#include <machine/frame.h> -#include <machine/md_var.h> -#include <x86/include/psl.h> - -#include <security/audit/audit.h> - -#include <compat/ia32/ia32_util.h> - -void -ia32_set_syscall_retval(struct thread *td, int error) -{ - struct proc *p; - struct trapframe *tf; - - tf = td->td_frame; - - switch (error) { - case 0: - tf->tf_scratch.gr8 = td->td_retval[0]; /* eax */ - tf->tf_scratch.gr10 = td->td_retval[1]; /* edx */ - ia64_set_eflag(ia64_get_eflag() & ~PSL_C); - break; - - case ERESTART: - /* - * Reconstruct pc, assuming lcall $X,y is 7 bytes, - * int 0x80 is 2 bytes. XXX Assume int 0x80. - */ - tf->tf_special.iip -= 2; - break; - - case EJUSTRETURN: - break; - - default: - p = td->td_proc; - if (p->p_sysent->sv_errsize) { - if (error >= p->p_sysent->sv_errsize) - error = -1; /* XXX */ - else - error = p->p_sysent->sv_errtbl[error]; - } - tf->tf_scratch.gr8 = error; - ia64_set_eflag(ia64_get_eflag() | PSL_C); - break; - } -} - -int -ia32_fetch_syscall_args(struct thread *td, struct syscall_args *sa) -{ - struct trapframe *tf; - struct proc *p; - uint32_t args[8]; - caddr_t params; - int error, i; - - tf = td->td_frame; - p = td->td_proc; - - params = (caddr_t)(tf->tf_special.sp & ((1L<<32)-1)) + - sizeof(uint32_t); - sa->code = tf->tf_scratch.gr8; /* eax */ - - if (sa->code == SYS_syscall) { - /* Code is first argument, followed by actual args. */ - sa->code = fuword32(params); - params += sizeof(int); - } else if (sa->code == SYS___syscall) { - /* - * Like syscall, but code is a quad, so as to maintain - * quad alignment for the rest of the arguments. We - * use a 32-bit fetch in case params is not aligned. - */ - sa->code = fuword32(params); - params += sizeof(quad_t); - } - - if (p->p_sysent->sv_mask) - sa->code &= p->p_sysent->sv_mask; - if (sa->code >= p->p_sysent->sv_size) - sa->callp = &p->p_sysent->sv_table[0]; - else - sa->callp = &p->p_sysent->sv_table[sa->code]; - sa->narg = sa->callp->sy_narg; - - if (params != NULL && sa->narg != 0) - error = copyin(params, (caddr_t)args, sa->narg * sizeof(int)); - else - error = 0; - sa->args = &sa->args32[0]; - - if (error == 0) { - for (i = 0; i < sa->narg; i++) - sa->args32[i] = args[i]; - td->td_retval[0] = 0; - td->td_retval[1] = tf->tf_scratch.gr10; /* edx */ - } - - return (error); -} - -#include "../../kern/subr_syscall.c" - -static void -ia32_syscall(struct trapframe *tf) -{ - struct thread *td; - struct syscall_args sa; - register_t eflags; - int error; - ksiginfo_t ksi; - - td = curthread; - eflags = ia64_get_eflag(); - - error = syscallenter(td, &sa); - - /* - * Traced syscall. - */ - if ((eflags & PSL_T) && !(eflags & PSL_VM)) { - ia64_set_eflag(ia64_get_eflag() & ~PSL_T); - ksiginfo_init_trap(&ksi); - ksi.ksi_signo = SIGTRAP; - ksi.ksi_code = TRAP_TRACE; - ksi.ksi_addr = (void *)tf->tf_special.iip; - trapsignal(td, &ksi); - } - - syscallret(td, error, &sa); -} - -/* - * ia32_trap() is called from exception.S to handle the IA-32 specific - * interruption vectors. - */ -void -ia32_trap(int vector, struct trapframe *tf) -{ - struct proc *p; - struct thread *td; - uint64_t ucode; - int sig; - ksiginfo_t ksi; - - KASSERT(TRAPF_USERMODE(tf), ("%s: In kernel mode???", __func__)); - - ia64_set_fpsr(IA64_FPSR_DEFAULT); - PCPU_INC(cnt.v_trap); - - td = curthread; - td->td_frame = tf; - td->td_pticks = 0; - p = td->td_proc; - if (td->td_ucred != p->p_ucred) - cred_update_thread(td); - sig = 0; - ucode = 0; - switch (vector) { - case IA64_VEC_IA32_EXCEPTION: - switch ((tf->tf_special.isr >> 16) & 0xffff) { - case IA32_EXCEPTION_DIVIDE: - ucode = FPE_INTDIV; - sig = SIGFPE; - break; - case IA32_EXCEPTION_DEBUG: - case IA32_EXCEPTION_BREAK: - sig = SIGTRAP; - break; - case IA32_EXCEPTION_OVERFLOW: - ucode = FPE_INTOVF; - sig = SIGFPE; - break; - case IA32_EXCEPTION_BOUND: - ucode = FPE_FLTSUB; - sig = SIGFPE; - break; - case IA32_EXCEPTION_DNA: - ucode = 0; - sig = SIGFPE; - break; - case IA32_EXCEPTION_NOT_PRESENT: - case IA32_EXCEPTION_STACK_FAULT: - case IA32_EXCEPTION_GPFAULT: - ucode = (tf->tf_special.isr & 0xffff) + BUS_SEGM_FAULT; - sig = SIGBUS; - break; - case IA32_EXCEPTION_FPERROR: - ucode = 0; /* XXX */ - sig = SIGFPE; - break; - case IA32_EXCEPTION_ALIGNMENT_CHECK: - ucode = tf->tf_special.ifa; /* VA */ - sig = SIGBUS; - break; - case IA32_EXCEPTION_STREAMING_SIMD: - ucode = 0; /* XXX */ - sig = SIGFPE; - break; - default: - trap_panic(vector, tf); - break; - } - break; - - case IA64_VEC_IA32_INTERCEPT: - /* XXX Maybe need to emulate ia32 instruction. */ - trap_panic(vector, tf); - - case IA64_VEC_IA32_INTERRUPT: - /* INT n instruction - probably a syscall. */ - if (((tf->tf_special.isr >> 16) & 0xffff) == 0x80) { - ia32_syscall(tf); - goto out; - } - ucode = (tf->tf_special.isr >> 16) & 0xffff; - sig = SIGILL; - break; - - default: - /* Should never happen of course. */ - trap_panic(vector, tf); - break; - } - - KASSERT(sig != 0, ("%s: signal not set", __func__)); - - ksiginfo_init_trap(&ksi); - ksi.ksi_signo = sig; - ksi.ksi_code = (int)ucode; /* XXX */ - /* ksi.ksi_addr */ - trapsignal(td, &ksi); - -out: - userret(td, tf); - do_ast(tf); -} |