1139 lines
37 KiB
C
1139 lines
37 KiB
C
/*
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* ARM signal handling routines
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*
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* Copyright 2002 Marcus Meissner, SuSE Linux AG
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* Copyright 2010-2013, 2015 André Hentschel
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#if 0
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#pragma makedep unix
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#endif
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#ifdef __arm__
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#include "config.h"
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#include <assert.h>
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#include <pthread.h>
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#include <signal.h>
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#include <stdlib.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <sys/types.h>
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#include <unistd.h>
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#ifdef HAVE_SYS_PARAM_H
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# include <sys/param.h>
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#endif
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#ifdef HAVE_SYSCALL_H
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# include <syscall.h>
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#else
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# ifdef HAVE_SYS_SYSCALL_H
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# include <sys/syscall.h>
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# endif
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#endif
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#ifdef HAVE_SYS_SIGNAL_H
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# include <sys/signal.h>
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#endif
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#ifdef HAVE_SYS_UCONTEXT_H
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# include <sys/ucontext.h>
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#endif
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#define NONAMELESSUNION
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#define NONAMELESSSTRUCT
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#include "ntstatus.h"
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#define WIN32_NO_STATUS
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#include "windef.h"
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#include "winnt.h"
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#include "winternl.h"
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#include "wine/asm.h"
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#include "unix_private.h"
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#include "wine/debug.h"
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WINE_DEFAULT_DEBUG_CHANNEL(seh);
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/***********************************************************************
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* signal context platform-specific definitions
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*/
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#ifdef linux
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#if defined(__ANDROID__) && !defined(HAVE_SYS_UCONTEXT_H)
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typedef struct ucontext
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{
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unsigned long uc_flags;
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struct ucontext *uc_link;
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stack_t uc_stack;
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struct sigcontext uc_mcontext;
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sigset_t uc_sigmask;
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unsigned long uc_regspace[128] __attribute__((__aligned__(8)));
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} ucontext_t;
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#endif
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/* All Registers access - only for local access */
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# define REG_sig(reg_name, context) ((context)->uc_mcontext.reg_name)
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# define REGn_sig(reg_num, context) ((context)->uc_mcontext.arm_r##reg_num)
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/* Special Registers access */
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# define SP_sig(context) REG_sig(arm_sp, context) /* Stack pointer */
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# define LR_sig(context) REG_sig(arm_lr, context) /* Link register */
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# define PC_sig(context) REG_sig(arm_pc, context) /* Program counter */
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# define CPSR_sig(context) REG_sig(arm_cpsr, context) /* Current State Register */
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# define IP_sig(context) REG_sig(arm_ip, context) /* Intra-Procedure-call scratch register */
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# define FP_sig(context) REG_sig(arm_fp, context) /* Frame pointer */
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/* Exceptions */
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# define ERROR_sig(context) REG_sig(error_code, context)
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# define TRAP_sig(context) REG_sig(trap_no, context)
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struct extended_ctx
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{
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unsigned long magic;
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unsigned long size;
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};
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struct vfp_sigframe
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{
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struct extended_ctx ctx;
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unsigned long long fpregs[32];
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unsigned long fpscr;
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};
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static void *get_extended_sigcontext( const ucontext_t *sigcontext, unsigned int magic )
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{
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struct extended_ctx *ctx = (struct extended_ctx *)sigcontext->uc_regspace;
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while ((char *)ctx < (char *)(sigcontext + 1) && ctx->magic && ctx->size)
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{
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if (ctx->magic == magic) return ctx;
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ctx = (struct extended_ctx *)((char *)ctx + ctx->size);
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}
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return NULL;
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}
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static void save_fpu( CONTEXT *context, const ucontext_t *sigcontext )
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{
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struct vfp_sigframe *frame = get_extended_sigcontext( sigcontext, 0x56465001 );
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if (!frame) return;
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memcpy( context->u.D, frame->fpregs, sizeof(context->u.D) );
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context->Fpscr = frame->fpscr;
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}
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static void restore_fpu( const CONTEXT *context, ucontext_t *sigcontext )
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{
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struct vfp_sigframe *frame = get_extended_sigcontext( sigcontext, 0x56465001 );
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if (!frame) return;
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memcpy( frame->fpregs, context->u.D, sizeof(context->u.D) );
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frame->fpscr = context->Fpscr;
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}
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#elif defined(__FreeBSD__)
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/* All Registers access - only for local access */
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# define REGn_sig(reg_num, context) ((context)->uc_mcontext.__gregs[reg_num])
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/* Special Registers access */
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# define SP_sig(context) REGn_sig(_REG_SP, context) /* Stack pointer */
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# define LR_sig(context) REGn_sig(_REG_LR, context) /* Link register */
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# define PC_sig(context) REGn_sig(_REG_PC, context) /* Program counter */
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# define CPSR_sig(context) REGn_sig(_REG_CPSR, context) /* Current State Register */
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# define IP_sig(context) REGn_sig(_REG_R12, context) /* Intra-Procedure-call scratch register */
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# define FP_sig(context) REGn_sig(_REG_FP, context) /* Frame pointer */
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static void save_fpu( CONTEXT *context, const ucontext_t *sigcontext ) { }
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static void restore_fpu( const CONTEXT *context, ucontext_t *sigcontext ) { }
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#endif /* linux */
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enum arm_trap_code
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{
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TRAP_ARM_UNKNOWN = -1, /* Unknown fault (TRAP_sig not defined) */
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TRAP_ARM_PRIVINFLT = 6, /* Invalid opcode exception */
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TRAP_ARM_PAGEFLT = 14, /* Page fault */
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TRAP_ARM_ALIGNFLT = 17, /* Alignment check exception */
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};
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struct syscall_frame
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{
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DWORD r0; /* 000 */
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DWORD r1; /* 004 */
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DWORD r2; /* 008 */
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DWORD r3; /* 00c */
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DWORD r4; /* 010 */
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DWORD r5; /* 014 */
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DWORD r6; /* 018 */
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DWORD r7; /* 01c */
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DWORD r8; /* 020 */
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DWORD r9; /* 024 */
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DWORD r10; /* 028 */
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DWORD r11; /* 02c */
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DWORD r12; /* 030 */
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DWORD pc; /* 034 */
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DWORD sp; /* 038 */
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DWORD lr; /* 03c */
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DWORD cpsr; /* 040 */
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DWORD restore_flags; /* 044 */
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DWORD fpscr; /* 048 */
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struct syscall_frame *prev_frame; /* 04c */
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SYSTEM_SERVICE_TABLE *syscall_table; /* 050 */
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DWORD align[3]; /* 054 */
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ULONGLONG d[32]; /* 060 */
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};
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C_ASSERT( sizeof( struct syscall_frame ) == 0x160);
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struct arm_thread_data
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{
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void *exit_frame; /* 1d4 exit frame pointer */
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struct syscall_frame *syscall_frame; /* 1d8 frame pointer on syscall entry */
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};
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C_ASSERT( sizeof(struct arm_thread_data) <= sizeof(((struct ntdll_thread_data *)0)->cpu_data) );
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C_ASSERT( offsetof( TEB, GdiTebBatch ) + offsetof( struct arm_thread_data, exit_frame ) == 0x1d4 );
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C_ASSERT( offsetof( TEB, GdiTebBatch ) + offsetof( struct arm_thread_data, syscall_frame ) == 0x1d8 );
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static inline struct arm_thread_data *arm_thread_data(void)
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{
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return (struct arm_thread_data *)ntdll_get_thread_data()->cpu_data;
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}
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static BOOL is_inside_syscall( ucontext_t *sigcontext )
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{
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return ((char *)SP_sig(sigcontext) >= (char *)ntdll_get_thread_data()->kernel_stack &&
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(char *)SP_sig(sigcontext) <= (char *)arm_thread_data()->syscall_frame);
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}
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/***********************************************************************
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* unwind_builtin_dll
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*/
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NTSTATUS CDECL unwind_builtin_dll( ULONG type, struct _DISPATCHER_CONTEXT *dispatch, CONTEXT *context )
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{
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return STATUS_UNSUCCESSFUL;
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}
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/***********************************************************************
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* get_trap_code
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*
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* Get the trap code for a signal.
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*/
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static inline enum arm_trap_code get_trap_code( int signal, const ucontext_t *sigcontext )
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{
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#ifdef TRAP_sig
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enum arm_trap_code trap = TRAP_sig(sigcontext);
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if (trap)
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return trap;
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#endif
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switch (signal)
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{
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case SIGILL:
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return TRAP_ARM_PRIVINFLT;
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case SIGSEGV:
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return TRAP_ARM_PAGEFLT;
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case SIGBUS:
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return TRAP_ARM_ALIGNFLT;
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default:
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return TRAP_ARM_UNKNOWN;
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}
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}
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/***********************************************************************
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* get_error_code
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*
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* Get the error code for a signal.
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*/
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static inline WORD get_error_code( const ucontext_t *sigcontext )
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{
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#ifdef ERROR_sig
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return ERROR_sig(sigcontext);
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#else
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return 0;
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#endif
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}
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/***********************************************************************
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* save_context
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*
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* Set the register values from a sigcontext.
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*/
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static void save_context( CONTEXT *context, const ucontext_t *sigcontext )
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{
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#define C(x) context->R##x = REGn_sig(x,sigcontext)
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/* Save normal registers */
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C(0); C(1); C(2); C(3); C(4); C(5); C(6); C(7); C(8); C(9); C(10);
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#undef C
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context->ContextFlags = CONTEXT_FULL;
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context->Sp = SP_sig(sigcontext); /* Stack pointer */
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context->Lr = LR_sig(sigcontext); /* Link register */
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context->Pc = PC_sig(sigcontext); /* Program Counter */
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context->Cpsr = CPSR_sig(sigcontext); /* Current State Register */
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context->R11 = FP_sig(sigcontext); /* Frame pointer */
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context->R12 = IP_sig(sigcontext); /* Intra-Procedure-call scratch register */
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if (CPSR_sig(sigcontext) & 0x20) context->Pc |= 1; /* Thumb mode */
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save_fpu( context, sigcontext );
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}
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/***********************************************************************
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* restore_context
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*
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* Build a sigcontext from the register values.
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*/
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static void restore_context( const CONTEXT *context, ucontext_t *sigcontext )
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{
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#define C(x) REGn_sig(x,sigcontext) = context->R##x
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/* Restore normal registers */
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C(0); C(1); C(2); C(3); C(4); C(5); C(6); C(7); C(8); C(9); C(10);
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#undef C
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SP_sig(sigcontext) = context->Sp; /* Stack pointer */
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LR_sig(sigcontext) = context->Lr; /* Link register */
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PC_sig(sigcontext) = context->Pc; /* Program Counter */
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CPSR_sig(sigcontext) = context->Cpsr; /* Current State Register */
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FP_sig(sigcontext) = context->R11; /* Frame pointer */
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IP_sig(sigcontext) = context->R12; /* Intra-Procedure-call scratch register */
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if (PC_sig(sigcontext) & 1) CPSR_sig(sigcontext) |= 0x20;
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else CPSR_sig(sigcontext) &= ~0x20;
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restore_fpu( context, sigcontext );
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}
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/***********************************************************************
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* signal_set_full_context
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*/
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NTSTATUS signal_set_full_context( CONTEXT *context )
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{
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NTSTATUS status = NtSetContextThread( GetCurrentThread(), context );
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if (!status && (context->ContextFlags & CONTEXT_INTEGER) == CONTEXT_INTEGER)
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arm_thread_data()->syscall_frame->restore_flags |= CONTEXT_INTEGER;
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return status;
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}
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/***********************************************************************
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* get_native_context
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*/
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void *get_native_context( CONTEXT *context )
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{
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return context;
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}
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/***********************************************************************
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* get_wow_context
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*/
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void *get_wow_context( CONTEXT *context )
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{
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return NULL;
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}
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/***********************************************************************
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* NtSetContextThread (NTDLL.@)
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* ZwSetContextThread (NTDLL.@)
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*/
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NTSTATUS WINAPI NtSetContextThread( HANDLE handle, const CONTEXT *context )
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{
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NTSTATUS ret;
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struct syscall_frame *frame = arm_thread_data()->syscall_frame;
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DWORD flags = context->ContextFlags & ~CONTEXT_ARM;
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BOOL self = (handle == GetCurrentThread());
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if (!self)
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{
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ret = set_thread_context( handle, context, &self, IMAGE_FILE_MACHINE_ARMNT );
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if (ret || !self) return ret;
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}
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if (flags & CONTEXT_INTEGER)
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{
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frame->r0 = context->R0;
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frame->r1 = context->R1;
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frame->r2 = context->R2;
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frame->r3 = context->R3;
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frame->r4 = context->R4;
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frame->r5 = context->R5;
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frame->r6 = context->R6;
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frame->r7 = context->R7;
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frame->r8 = context->R8;
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frame->r9 = context->R9;
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frame->r10 = context->R10;
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frame->r11 = context->R11;
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frame->r12 = context->R12;
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}
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if (flags & CONTEXT_CONTROL)
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{
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frame->sp = context->Sp;
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frame->lr = context->Lr;
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frame->pc = context->Pc & ~1;
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frame->cpsr = context->Cpsr;
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if (context->Cpsr & 0x20) frame->pc |= 1; /* thumb */
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}
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if (flags & CONTEXT_FLOATING_POINT)
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{
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frame->fpscr = context->Fpscr;
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memcpy( frame->d, context->u.D, sizeof(context->u.D) );
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}
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frame->restore_flags |= flags & ~CONTEXT_INTEGER;
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return STATUS_SUCCESS;
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}
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/***********************************************************************
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* NtGetContextThread (NTDLL.@)
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* ZwGetContextThread (NTDLL.@)
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*/
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NTSTATUS WINAPI NtGetContextThread( HANDLE handle, CONTEXT *context )
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{
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struct syscall_frame *frame = arm_thread_data()->syscall_frame;
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DWORD needed_flags = context->ContextFlags & ~CONTEXT_ARM;
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BOOL self = (handle == GetCurrentThread());
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if (!self)
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{
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NTSTATUS ret = get_thread_context( handle, &context, &self, IMAGE_FILE_MACHINE_ARMNT );
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if (ret || !self) return ret;
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}
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if (needed_flags & CONTEXT_INTEGER)
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{
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context->R0 = frame->r0;
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context->R1 = frame->r1;
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context->R2 = frame->r2;
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context->R3 = frame->r3;
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context->R4 = frame->r4;
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context->R5 = frame->r5;
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context->R6 = frame->r6;
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context->R7 = frame->r7;
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context->R8 = frame->r8;
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context->R9 = frame->r9;
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context->R10 = frame->r10;
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context->R11 = frame->r11;
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context->R12 = frame->r12;
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context->ContextFlags |= CONTEXT_INTEGER;
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}
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if (needed_flags & CONTEXT_CONTROL)
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{
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context->Sp = frame->sp;
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context->Lr = frame->lr;
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context->Pc = frame->pc;
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context->Cpsr = frame->cpsr;
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context->ContextFlags |= CONTEXT_CONTROL;
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}
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if (needed_flags & CONTEXT_FLOATING_POINT)
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{
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context->Fpscr = frame->fpscr;
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memcpy( context->u.D, frame->d, sizeof(frame->d) );
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context->ContextFlags |= CONTEXT_FLOATING_POINT;
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}
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return STATUS_SUCCESS;
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}
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/***********************************************************************
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* set_thread_wow64_context
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*/
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NTSTATUS set_thread_wow64_context( HANDLE handle, const void *ctx, ULONG size )
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{
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return STATUS_INVALID_INFO_CLASS;
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}
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/***********************************************************************
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* get_thread_wow64_context
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*/
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NTSTATUS get_thread_wow64_context( HANDLE handle, void *ctx, ULONG size )
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{
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return STATUS_INVALID_INFO_CLASS;
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}
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/***********************************************************************
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* setup_exception
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*
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* Modify the signal context to call the exception raise function.
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*/
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static void setup_exception( ucontext_t *sigcontext, EXCEPTION_RECORD *rec )
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{
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struct
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{
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CONTEXT context;
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EXCEPTION_RECORD rec;
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} *stack;
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void *stack_ptr = (void *)(SP_sig(sigcontext) & ~3);
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CONTEXT context;
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NTSTATUS status;
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rec->ExceptionAddress = (void *)PC_sig(sigcontext);
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save_context( &context, sigcontext );
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status = send_debug_event( rec, &context, TRUE );
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if (status == DBG_CONTINUE || status == DBG_EXCEPTION_HANDLED)
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{
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restore_context( &context, sigcontext );
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return;
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}
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stack = virtual_setup_exception( stack_ptr, sizeof(*stack), rec );
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stack->rec = *rec;
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stack->context = context;
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/* now modify the sigcontext to return to the raise function */
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SP_sig(sigcontext) = (DWORD)stack;
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PC_sig(sigcontext) = (DWORD)pKiUserExceptionDispatcher;
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if (PC_sig(sigcontext) & 1) CPSR_sig(sigcontext) |= 0x20;
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else CPSR_sig(sigcontext) &= ~0x20;
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REGn_sig(0, sigcontext) = (DWORD)&stack->rec; /* first arg for KiUserExceptionDispatcher */
|
|
REGn_sig(1, sigcontext) = (DWORD)&stack->context; /* second arg for KiUserExceptionDispatcher */
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* call_user_apc_dispatcher
|
|
*/
|
|
NTSTATUS call_user_apc_dispatcher( CONTEXT *context, ULONG_PTR arg1, ULONG_PTR arg2, ULONG_PTR arg3,
|
|
PNTAPCFUNC func, NTSTATUS status )
|
|
{
|
|
struct syscall_frame *frame = arm_thread_data()->syscall_frame;
|
|
ULONG sp = context ? context->Sp : frame->sp;
|
|
struct apc_stack_layout
|
|
{
|
|
void *func;
|
|
void *align;
|
|
CONTEXT context;
|
|
} *stack;
|
|
|
|
sp &= ~15;
|
|
stack = (struct apc_stack_layout *)sp - 1;
|
|
if (context)
|
|
{
|
|
memmove( &stack->context, context, sizeof(stack->context) );
|
|
NtSetContextThread( GetCurrentThread(), &stack->context );
|
|
}
|
|
else
|
|
{
|
|
stack->context.ContextFlags = CONTEXT_FULL;
|
|
NtGetContextThread( GetCurrentThread(), &stack->context );
|
|
stack->context.R0 = status;
|
|
}
|
|
frame->sp = (DWORD)stack;
|
|
frame->pc = (DWORD)pKiUserApcDispatcher;
|
|
frame->r0 = (DWORD)&stack->context;
|
|
frame->r1 = arg1;
|
|
frame->r2 = arg2;
|
|
frame->r3 = arg3;
|
|
stack->func = func;
|
|
frame->restore_flags |= CONTEXT_CONTROL | CONTEXT_INTEGER;
|
|
return status;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* call_raise_user_exception_dispatcher
|
|
*/
|
|
void call_raise_user_exception_dispatcher(void)
|
|
{
|
|
arm_thread_data()->syscall_frame->pc = (DWORD)pKiRaiseUserExceptionDispatcher;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* call_user_exception_dispatcher
|
|
*/
|
|
NTSTATUS call_user_exception_dispatcher( EXCEPTION_RECORD *rec, CONTEXT *context )
|
|
{
|
|
struct syscall_frame *frame = arm_thread_data()->syscall_frame;
|
|
NTSTATUS status = NtSetContextThread( GetCurrentThread(), context );
|
|
|
|
if (status) return status;
|
|
frame->r0 = (DWORD)rec;
|
|
frame->r1 = (DWORD)context;
|
|
frame->pc = (DWORD)pKiUserExceptionDispatcher;
|
|
frame->restore_flags |= CONTEXT_INTEGER | CONTEXT_CONTROL;
|
|
return status;
|
|
}
|
|
|
|
|
|
struct user_callback_frame
|
|
{
|
|
struct syscall_frame frame;
|
|
void **ret_ptr;
|
|
ULONG *ret_len;
|
|
__wine_jmp_buf jmpbuf;
|
|
NTSTATUS status;
|
|
};
|
|
|
|
/***********************************************************************
|
|
* KeUserModeCallback
|
|
*/
|
|
NTSTATUS WINAPI KeUserModeCallback( ULONG id, const void *args, ULONG len, void **ret_ptr, ULONG *ret_len )
|
|
{
|
|
struct user_callback_frame callback_frame = { { 0 }, ret_ptr, ret_len };
|
|
|
|
if ((char *)ntdll_get_thread_data()->kernel_stack + min_kernel_stack > (char *)&callback_frame)
|
|
return STATUS_STACK_OVERFLOW;
|
|
|
|
if (!__wine_setjmpex( &callback_frame.jmpbuf, NULL ))
|
|
{
|
|
struct syscall_frame *frame = arm_thread_data()->syscall_frame;
|
|
void *args_data = (void *)((frame->sp - len) & ~15);
|
|
|
|
memcpy( args_data, args, len );
|
|
|
|
callback_frame.frame.r0 = id;
|
|
callback_frame.frame.r1 = (ULONG_PTR)args;
|
|
callback_frame.frame.r2 = len;
|
|
callback_frame.frame.sp = (ULONG_PTR)args_data;
|
|
callback_frame.frame.pc = (ULONG_PTR)pKiUserCallbackDispatcher;
|
|
callback_frame.frame.restore_flags = CONTEXT_INTEGER;
|
|
callback_frame.frame.syscall_table = frame->syscall_table;
|
|
callback_frame.frame.prev_frame = frame;
|
|
arm_thread_data()->syscall_frame = &callback_frame.frame;
|
|
|
|
__wine_syscall_dispatcher_return( &callback_frame.frame, 0 );
|
|
}
|
|
return callback_frame.status;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* NtCallbackReturn (NTDLL.@)
|
|
*/
|
|
NTSTATUS WINAPI NtCallbackReturn( void *ret_ptr, ULONG ret_len, NTSTATUS status )
|
|
{
|
|
struct user_callback_frame *frame = (struct user_callback_frame *)arm_thread_data()->syscall_frame;
|
|
|
|
if (!frame->frame.prev_frame) return STATUS_NO_CALLBACK_ACTIVE;
|
|
|
|
*frame->ret_ptr = ret_ptr;
|
|
*frame->ret_len = ret_len;
|
|
frame->status = status;
|
|
arm_thread_data()->syscall_frame = frame->frame.prev_frame;
|
|
__wine_longjmp( &frame->jmpbuf, 1 );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* handle_syscall_fault
|
|
*
|
|
* Handle a page fault happening during a system call.
|
|
*/
|
|
static BOOL handle_syscall_fault( ucontext_t *context, EXCEPTION_RECORD *rec )
|
|
{
|
|
struct syscall_frame *frame = arm_thread_data()->syscall_frame;
|
|
DWORD i;
|
|
|
|
if (!is_inside_syscall( context ) && !ntdll_get_thread_data()->jmp_buf) return FALSE;
|
|
|
|
TRACE( "code=%x flags=%x addr=%p pc=%08x tid=%04x\n",
|
|
rec->ExceptionCode, rec->ExceptionFlags, rec->ExceptionAddress,
|
|
(DWORD)PC_sig(context), GetCurrentThreadId() );
|
|
for (i = 0; i < rec->NumberParameters; i++)
|
|
TRACE( " info[%d]=%08lx\n", i, rec->ExceptionInformation[i] );
|
|
|
|
TRACE( " r0=%08x r1=%08x r2=%08x r3=%08x r4=%08x r5=%08x\n",
|
|
(DWORD)REGn_sig(0, context), (DWORD)REGn_sig(1, context), (DWORD)REGn_sig(2, context),
|
|
(DWORD)REGn_sig(3, context), (DWORD)REGn_sig(4, context), (DWORD)REGn_sig(5, context) );
|
|
TRACE( " r6=%08x r7=%08x r8=%08x r9=%08x r10=%08x r11=%08x\n",
|
|
(DWORD)REGn_sig(6, context), (DWORD)REGn_sig(7, context), (DWORD)REGn_sig(8, context),
|
|
(DWORD)REGn_sig(9, context), (DWORD)REGn_sig(10, context), (DWORD)FP_sig(context) );
|
|
TRACE( " r12=%08x sp=%08x lr=%08x pc=%08x cpsr=%08x\n",
|
|
(DWORD)IP_sig(context), (DWORD)SP_sig(context), (DWORD)LR_sig(context),
|
|
(DWORD)PC_sig(context), (DWORD)CPSR_sig(context) );
|
|
|
|
if (ntdll_get_thread_data()->jmp_buf)
|
|
{
|
|
TRACE( "returning to handler\n" );
|
|
REGn_sig(0, context) = (DWORD)ntdll_get_thread_data()->jmp_buf;
|
|
REGn_sig(1, context) = 1;
|
|
PC_sig(context) = (DWORD)__wine_longjmp;
|
|
ntdll_get_thread_data()->jmp_buf = NULL;
|
|
}
|
|
else
|
|
{
|
|
TRACE( "returning to user mode ip=%08x ret=%08x\n", frame->pc, rec->ExceptionCode );
|
|
REGn_sig(0, context) = (DWORD)frame;
|
|
REGn_sig(1, context) = rec->ExceptionCode;
|
|
PC_sig(context) = (DWORD)__wine_syscall_dispatcher_return;
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
* segv_handler
|
|
*
|
|
* Handler for SIGSEGV and related errors.
|
|
*/
|
|
static void segv_handler( int signal, siginfo_t *siginfo, void *sigcontext )
|
|
{
|
|
EXCEPTION_RECORD rec = { 0 };
|
|
ucontext_t *context = sigcontext;
|
|
|
|
switch (get_trap_code(signal, context))
|
|
{
|
|
case TRAP_ARM_PRIVINFLT: /* Invalid opcode exception */
|
|
if (*(WORD *)PC_sig(context) == 0xdefe) /* breakpoint */
|
|
{
|
|
rec.ExceptionCode = EXCEPTION_BREAKPOINT;
|
|
rec.NumberParameters = 1;
|
|
break;
|
|
}
|
|
rec.ExceptionCode = EXCEPTION_ILLEGAL_INSTRUCTION;
|
|
break;
|
|
case TRAP_ARM_PAGEFLT: /* Page fault */
|
|
rec.NumberParameters = 2;
|
|
rec.ExceptionInformation[0] = (get_error_code(context) & 0x800) != 0;
|
|
rec.ExceptionInformation[1] = (ULONG_PTR)siginfo->si_addr;
|
|
rec.ExceptionCode = virtual_handle_fault( siginfo->si_addr, rec.ExceptionInformation[0],
|
|
(void *)SP_sig(context) );
|
|
if (!rec.ExceptionCode) return;
|
|
break;
|
|
case TRAP_ARM_ALIGNFLT: /* Alignment check exception */
|
|
rec.ExceptionCode = EXCEPTION_DATATYPE_MISALIGNMENT;
|
|
break;
|
|
case TRAP_ARM_UNKNOWN: /* Unknown fault code */
|
|
rec.ExceptionCode = EXCEPTION_ACCESS_VIOLATION;
|
|
rec.NumberParameters = 2;
|
|
rec.ExceptionInformation[0] = 0;
|
|
rec.ExceptionInformation[1] = 0xffffffff;
|
|
break;
|
|
default:
|
|
ERR("Got unexpected trap %d\n", get_trap_code(signal, context));
|
|
rec.ExceptionCode = EXCEPTION_ILLEGAL_INSTRUCTION;
|
|
break;
|
|
}
|
|
if (handle_syscall_fault( context, &rec )) return;
|
|
setup_exception( context, &rec );
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
* trap_handler
|
|
*
|
|
* Handler for SIGTRAP.
|
|
*/
|
|
static void trap_handler( int signal, siginfo_t *siginfo, void *sigcontext )
|
|
{
|
|
EXCEPTION_RECORD rec = { 0 };
|
|
|
|
switch (siginfo->si_code)
|
|
{
|
|
case TRAP_TRACE:
|
|
rec.ExceptionCode = EXCEPTION_SINGLE_STEP;
|
|
break;
|
|
case TRAP_BRKPT:
|
|
default:
|
|
rec.ExceptionCode = EXCEPTION_BREAKPOINT;
|
|
rec.NumberParameters = 1;
|
|
break;
|
|
}
|
|
setup_exception( sigcontext, &rec );
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
* fpe_handler
|
|
*
|
|
* Handler for SIGFPE.
|
|
*/
|
|
static void fpe_handler( int signal, siginfo_t *siginfo, void *sigcontext )
|
|
{
|
|
EXCEPTION_RECORD rec = { 0 };
|
|
|
|
switch (siginfo->si_code & 0xffff )
|
|
{
|
|
#ifdef FPE_FLTSUB
|
|
case FPE_FLTSUB:
|
|
rec.ExceptionCode = EXCEPTION_ARRAY_BOUNDS_EXCEEDED;
|
|
break;
|
|
#endif
|
|
#ifdef FPE_INTDIV
|
|
case FPE_INTDIV:
|
|
rec.ExceptionCode = EXCEPTION_INT_DIVIDE_BY_ZERO;
|
|
break;
|
|
#endif
|
|
#ifdef FPE_INTOVF
|
|
case FPE_INTOVF:
|
|
rec.ExceptionCode = EXCEPTION_INT_OVERFLOW;
|
|
break;
|
|
#endif
|
|
#ifdef FPE_FLTDIV
|
|
case FPE_FLTDIV:
|
|
rec.ExceptionCode = EXCEPTION_FLT_DIVIDE_BY_ZERO;
|
|
break;
|
|
#endif
|
|
#ifdef FPE_FLTOVF
|
|
case FPE_FLTOVF:
|
|
rec.ExceptionCode = EXCEPTION_FLT_OVERFLOW;
|
|
break;
|
|
#endif
|
|
#ifdef FPE_FLTUND
|
|
case FPE_FLTUND:
|
|
rec.ExceptionCode = EXCEPTION_FLT_UNDERFLOW;
|
|
break;
|
|
#endif
|
|
#ifdef FPE_FLTRES
|
|
case FPE_FLTRES:
|
|
rec.ExceptionCode = EXCEPTION_FLT_INEXACT_RESULT;
|
|
break;
|
|
#endif
|
|
#ifdef FPE_FLTINV
|
|
case FPE_FLTINV:
|
|
#endif
|
|
default:
|
|
rec.ExceptionCode = EXCEPTION_FLT_INVALID_OPERATION;
|
|
break;
|
|
}
|
|
setup_exception( sigcontext, &rec );
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
* int_handler
|
|
*
|
|
* Handler for SIGINT.
|
|
*/
|
|
static void int_handler( int signal, siginfo_t *siginfo, void *sigcontext )
|
|
{
|
|
HANDLE handle;
|
|
|
|
if (!p__wine_ctrl_routine) return;
|
|
if (!NtCreateThreadEx( &handle, THREAD_ALL_ACCESS, NULL, NtCurrentProcess(),
|
|
p__wine_ctrl_routine, 0 /* CTRL_C_EVENT */, 0, 0, 0, 0, NULL ))
|
|
NtClose( handle );
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
* abrt_handler
|
|
*
|
|
* Handler for SIGABRT.
|
|
*/
|
|
static void abrt_handler( int signal, siginfo_t *siginfo, void *sigcontext )
|
|
{
|
|
EXCEPTION_RECORD rec = { EXCEPTION_WINE_ASSERTION, EH_NONCONTINUABLE };
|
|
|
|
setup_exception( sigcontext, &rec );
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
* quit_handler
|
|
*
|
|
* Handler for SIGQUIT.
|
|
*/
|
|
static void quit_handler( int signal, siginfo_t *siginfo, void *sigcontext )
|
|
{
|
|
abort_thread(0);
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
* usr1_handler
|
|
*
|
|
* Handler for SIGUSR1, used to signal a thread that it got suspended.
|
|
*/
|
|
static void usr1_handler( int signal, siginfo_t *siginfo, void *sigcontext )
|
|
{
|
|
CONTEXT context;
|
|
|
|
if (is_inside_syscall( sigcontext ))
|
|
{
|
|
context.ContextFlags = CONTEXT_FULL;
|
|
NtGetContextThread( GetCurrentThread(), &context );
|
|
wait_suspend( &context );
|
|
NtSetContextThread( GetCurrentThread(), &context );
|
|
}
|
|
else
|
|
{
|
|
save_context( &context, sigcontext );
|
|
wait_suspend( &context );
|
|
restore_context( &context, sigcontext );
|
|
}
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
* get_thread_ldt_entry
|
|
*/
|
|
NTSTATUS get_thread_ldt_entry( HANDLE handle, void *data, ULONG len, ULONG *ret_len )
|
|
{
|
|
return STATUS_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
|
|
/******************************************************************************
|
|
* NtSetLdtEntries (NTDLL.@)
|
|
* ZwSetLdtEntries (NTDLL.@)
|
|
*/
|
|
NTSTATUS WINAPI NtSetLdtEntries( ULONG sel1, LDT_ENTRY entry1, ULONG sel2, LDT_ENTRY entry2 )
|
|
{
|
|
return STATUS_NOT_IMPLEMENTED;
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
* signal_init_threading
|
|
*/
|
|
void signal_init_threading(void)
|
|
{
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
* signal_alloc_thread
|
|
*/
|
|
NTSTATUS signal_alloc_thread( TEB *teb )
|
|
{
|
|
teb->WOW32Reserved = __wine_syscall_dispatcher;
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
* signal_free_thread
|
|
*/
|
|
void signal_free_thread( TEB *teb )
|
|
{
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
* signal_init_thread
|
|
*/
|
|
void signal_init_thread( TEB *teb )
|
|
{
|
|
__asm__ __volatile__( "mcr p15, 0, %0, c13, c0, 2" : : "r" (teb) );
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
* signal_init_process
|
|
*/
|
|
void signal_init_process(void)
|
|
{
|
|
struct sigaction sig_act;
|
|
void *kernel_stack = (char *)ntdll_get_thread_data()->kernel_stack + kernel_stack_size;
|
|
|
|
arm_thread_data()->syscall_frame = (struct syscall_frame *)kernel_stack - 1;
|
|
|
|
sig_act.sa_mask = server_block_set;
|
|
sig_act.sa_flags = SA_RESTART | SA_SIGINFO | SA_ONSTACK;
|
|
|
|
sig_act.sa_sigaction = int_handler;
|
|
if (sigaction( SIGINT, &sig_act, NULL ) == -1) goto error;
|
|
sig_act.sa_sigaction = fpe_handler;
|
|
if (sigaction( SIGFPE, &sig_act, NULL ) == -1) goto error;
|
|
sig_act.sa_sigaction = abrt_handler;
|
|
if (sigaction( SIGABRT, &sig_act, NULL ) == -1) goto error;
|
|
sig_act.sa_sigaction = quit_handler;
|
|
if (sigaction( SIGQUIT, &sig_act, NULL ) == -1) goto error;
|
|
sig_act.sa_sigaction = usr1_handler;
|
|
if (sigaction( SIGUSR1, &sig_act, NULL ) == -1) goto error;
|
|
sig_act.sa_sigaction = trap_handler;
|
|
if (sigaction( SIGTRAP, &sig_act, NULL ) == -1) goto error;
|
|
sig_act.sa_sigaction = segv_handler;
|
|
if (sigaction( SIGSEGV, &sig_act, NULL ) == -1) goto error;
|
|
if (sigaction( SIGILL, &sig_act, NULL ) == -1) goto error;
|
|
if (sigaction( SIGBUS, &sig_act, NULL ) == -1) goto error;
|
|
return;
|
|
|
|
error:
|
|
perror("sigaction");
|
|
exit(1);
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* call_init_thunk
|
|
*/
|
|
void DECLSPEC_HIDDEN call_init_thunk( LPTHREAD_START_ROUTINE entry, void *arg, BOOL suspend, TEB *teb )
|
|
{
|
|
struct arm_thread_data *thread_data = (struct arm_thread_data *)&teb->GdiTebBatch;
|
|
struct syscall_frame *frame = thread_data->syscall_frame;
|
|
CONTEXT *ctx, context = { CONTEXT_ALL };
|
|
|
|
context.R0 = (DWORD)entry;
|
|
context.R1 = (DWORD)arg;
|
|
context.Sp = (DWORD)teb->Tib.StackBase;
|
|
context.Pc = (DWORD)pRtlUserThreadStart;
|
|
if (context.Pc & 1) context.Cpsr |= 0x20; /* thumb mode */
|
|
if ((ctx = get_cpu_area( IMAGE_FILE_MACHINE_ARMNT ))) *ctx = context;
|
|
|
|
if (suspend) wait_suspend( &context );
|
|
|
|
ctx = (CONTEXT *)((ULONG_PTR)context.Sp & ~15) - 1;
|
|
*ctx = context;
|
|
ctx->ContextFlags = CONTEXT_FULL;
|
|
NtSetContextThread( GetCurrentThread(), ctx );
|
|
|
|
frame->sp = (DWORD)ctx;
|
|
frame->pc = (DWORD)pLdrInitializeThunk;
|
|
frame->r0 = (DWORD)ctx;
|
|
frame->prev_frame = NULL;
|
|
frame->restore_flags |= CONTEXT_INTEGER;
|
|
frame->syscall_table = KeServiceDescriptorTable;
|
|
|
|
pthread_sigmask( SIG_UNBLOCK, &server_block_set, NULL );
|
|
__wine_syscall_dispatcher_return( frame, 0 );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* signal_start_thread
|
|
*/
|
|
__ASM_GLOBAL_FUNC( signal_start_thread,
|
|
"push {r4-r12,lr}\n\t"
|
|
/* store exit frame */
|
|
"str sp, [r3, #0x1d4]\n\t" /* arm_thread_data()->exit_frame */
|
|
/* set syscall frame */
|
|
"ldr r6, [r3, #0x1d8]\n\t" /* arm_thread_data()->syscall_frame */
|
|
"cbnz r6, 1f\n\t"
|
|
"sub r6, sp, #0x160\n\t" /* sizeof(struct syscall_frame) */
|
|
"str r6, [r3, #0x1d8]\n\t" /* arm_thread_data()->syscall_frame */
|
|
"1:\tmov sp, r6\n\t"
|
|
"bl " __ASM_NAME("call_init_thunk") )
|
|
|
|
|
|
/***********************************************************************
|
|
* signal_exit_thread
|
|
*/
|
|
__ASM_GLOBAL_FUNC( signal_exit_thread,
|
|
"ldr r3, [r2, #0x1d4]\n\t" /* arm_thread_data()->exit_frame */
|
|
"mov ip, #0\n\t"
|
|
"str ip, [r2, #0x1d4]\n\t"
|
|
"cmp r3, ip\n\t"
|
|
"it ne\n\t"
|
|
"movne sp, r3\n\t"
|
|
"blx r1" )
|
|
|
|
|
|
/***********************************************************************
|
|
* __wine_syscall_dispatcher
|
|
*/
|
|
__ASM_GLOBAL_FUNC( __wine_syscall_dispatcher,
|
|
"mrc p15, 0, r1, c13, c0, 2\n\t" /* NtCurrentTeb() */
|
|
"ldr r1, [r1, #0x1d8]\n\t" /* arm_thread_data()->syscall_frame */
|
|
"add r0, r1, #0x10\n\t"
|
|
"stm r0, {r4-r12,lr}\n\t"
|
|
"str sp, [r1, #0x38]\n\t"
|
|
"str r3, [r1, #0x3c]\n\t"
|
|
"mrs r0, CPSR\n\t"
|
|
"bfi r0, lr, #5, #1\n\t" /* set thumb bit */
|
|
"str r0, [r1, #0x40]\n\t"
|
|
"mov r0, #0\n\t"
|
|
"str r0, [r1, #0x44]\n\t" /* frame->restore_flags */
|
|
#ifndef __SOFTFP__
|
|
"vmrs r0, fpscr\n\t"
|
|
"str r0, [r1, #0x48]\n\t"
|
|
"add r0, r1, #0x60\n\t"
|
|
"vstm r0, {d0-d15}\n\t"
|
|
#endif
|
|
"mov r6, sp\n\t"
|
|
"mov sp, r1\n\t"
|
|
"mov r8, r1\n\t"
|
|
"ldr r5, [r1, #0x50]\n\t" /* frame->syscall_table */
|
|
"ubfx r4, ip, #12, #2\n\t" /* syscall table number */
|
|
"bfc ip, #12, #20\n\t" /* syscall number */
|
|
"add r4, r5, r4, lsl #4\n\t"
|
|
"ldr r5, [r4, #8]\n\t" /* table->ServiceLimit */
|
|
"cmp ip, r5\n\t"
|
|
"bcs 5f\n\t"
|
|
"ldr r5, [r4, #12]\n\t" /* table->ArgumentTable */
|
|
"ldrb r5, [r5, ip]\n\t"
|
|
"cmp r5, #16\n\t"
|
|
"it le\n\t"
|
|
"movle r5, #16\n\t"
|
|
"sub r0, sp, r5\n\t"
|
|
"and r0, #~7\n\t"
|
|
"mov sp, r0\n"
|
|
"2:\tsubs r5, r5, #4\n\t"
|
|
"ldr r0, [r6, r5]\n\t"
|
|
"str r0, [sp, r5]\n\t"
|
|
"bgt 2b\n\t"
|
|
"pop {r0-r3}\n\t" /* first 4 args are in registers */
|
|
"ldr r5, [r4]\n\t" /* table->ServiceTable */
|
|
"ldr ip, [r5, ip, lsl #2]\n\t"
|
|
"blx ip\n"
|
|
"4:\tldr ip, [r8, #0x44]\n\t" /* frame->restore_flags */
|
|
#ifndef __SOFTFP__
|
|
"tst ip, #4\n\t" /* CONTEXT_FLOATING_POINT */
|
|
"beq 3f\n\t"
|
|
"ldr r4, [r8, #0x48]\n\t"
|
|
"vmsr fpscr, r4\n\t"
|
|
"add r4, r8, #0x60\n\t"
|
|
"vldm r4, {d0-d15}\n"
|
|
"3:\n\t"
|
|
#endif
|
|
"tst ip, #2\n\t" /* CONTEXT_INTEGER */
|
|
"it ne\n\t"
|
|
"ldmne r8, {r0-r3}\n\t"
|
|
"ldr lr, [r8, #0x3c]\n\t"
|
|
"ldr sp, [r8, #0x38]\n\t"
|
|
"add r8, r8, #0x10\n\t"
|
|
"ldm r8, {r4-r12,pc}\n"
|
|
"5:\tmovw r0, #0x000d\n\t" /* STATUS_INVALID_PARAMETER */
|
|
"movt r0, #0xc000\n\t"
|
|
"b 4b\n"
|
|
__ASM_NAME("__wine_syscall_dispatcher_return") ":\n\t"
|
|
"mov r8, r0\n\t"
|
|
"mov r0, r1\n\t"
|
|
"b 4b" )
|
|
|
|
|
|
/***********************************************************************
|
|
* __wine_setjmpex
|
|
*/
|
|
__ASM_GLOBAL_FUNC( __wine_setjmpex,
|
|
"stm r0, {r1,r4-r11}\n" /* jmp_buf->Frame,R4..R11 */
|
|
"str sp, [r0, #0x24]\n\t" /* jmp_buf->Sp */
|
|
"str lr, [r0, #0x28]\n\t" /* jmp_buf->Pc */
|
|
#ifndef __SOFTFP__
|
|
"vmrs r2, fpscr\n\t"
|
|
"str r2, [r0, #0x2c]\n\t" /* jmp_buf->Fpscr */
|
|
"add r0, r0, #0x30\n\t"
|
|
"vstm r0, {d8-d15}\n\t" /* jmp_buf->D[0..7] */
|
|
#endif
|
|
"mov r0, #0\n\t"
|
|
"bx lr" )
|
|
|
|
|
|
/***********************************************************************
|
|
* __wine_longjmp
|
|
*/
|
|
__ASM_GLOBAL_FUNC( __wine_longjmp,
|
|
"ldm r0, {r3-r11}\n\t" /* jmp_buf->Frame,R4..R11 */
|
|
"ldr sp, [r0, #0x24]\n\t" /* jmp_buf->Sp */
|
|
"ldr r2, [r0, #0x28]\n\t" /* jmp_buf->Pc */
|
|
#ifndef __SOFTFP__
|
|
"ldr r3, [r0, #0x2c]\n\t" /* jmp_buf->Fpscr */
|
|
"vmsr fpscr, r3\n\t"
|
|
"add r0, r0, #0x30\n\t"
|
|
"vldm r0, {d8-d15}\n\t" /* jmp_buf->D[0..7] */
|
|
#endif
|
|
"mov r0, r1\n\t" /* retval */
|
|
"bx r2" )
|
|
|
|
#endif /* __arm__ */
|