894 lines
28 KiB
C
894 lines
28 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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#ifdef __arm__
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#include "config.h"
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#include "wine/port.h"
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#include <assert.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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#ifdef HAVE_UNISTD_H
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# include <unistd.h>
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#endif
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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 "winternl.h"
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#include "wine/exception.h"
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#include "ntdll_misc.h"
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#include "wine/debug.h"
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#include "winnt.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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#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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#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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typedef void (WINAPI *raise_func)( EXCEPTION_RECORD *rec, CONTEXT *context );
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typedef int (*wine_signal_handler)(unsigned int sig);
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static wine_signal_handler handlers[256];
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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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* dispatch_signal
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*/
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static inline int dispatch_signal(unsigned int sig)
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{
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if (handlers[sig] == NULL) return 0;
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return handlers[sig](sig);
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}
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/*******************************************************************
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* is_valid_frame
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*/
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static inline BOOL is_valid_frame( void *frame )
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{
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if ((ULONG_PTR)frame & 3) return FALSE;
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return (frame >= NtCurrentTeb()->Tib.StackLimit &&
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(void **)frame < (void **)NtCurrentTeb()->Tib.StackBase - 1);
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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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}
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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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}
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/***********************************************************************
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* save_fpu
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*
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* Set the FPU context from a sigcontext.
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*/
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static inline void save_fpu( CONTEXT *context, const ucontext_t *sigcontext )
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{
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FIXME("not implemented\n");
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}
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/***********************************************************************
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* restore_fpu
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*
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* Restore the FPU context to a sigcontext.
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*/
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static inline void restore_fpu( CONTEXT *context, const ucontext_t *sigcontext )
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{
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FIXME("not implemented\n");
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}
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/**************************************************************************
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* __chkstk (NTDLL.@)
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*
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* Incoming r4 contains words to allocate, converting to bytes then return
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*/
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__ASM_GLOBAL_FUNC( __chkstk, "lsl r4, r4, #2\n\t"
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"bx lr" )
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/***********************************************************************
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* RtlCaptureContext (NTDLL.@)
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*/
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/* FIXME: Use the Stack instead of the actual register values */
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__ASM_STDCALL_FUNC( RtlCaptureContext, 4,
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".arm\n\t"
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"stmib r0, {r0-r12}\n\t" /* context->R0..R12 */
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"mov r1, #0x0200000\n\t" /* CONTEXT_ARM */
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"add r1, r1, #0x3\n\t" /* CONTEXT_FULL */
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"str r1, [r0]\n\t" /* context->ContextFlags */
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"str SP, [r0, #0x38]\n\t" /* context->Sp */
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"str LR, [r0, #0x3c]\n\t" /* context->Lr */
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"str PC, [r0, #0x40]\n\t" /* context->Pc */
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"mrs r1, CPSR\n\t"
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"str r1, [r0, #0x44]\n\t" /* context->Cpsr */
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"bx lr"
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)
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/***********************************************************************
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* set_cpu_context
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*
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* Set the new CPU context.
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*/
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void DECLSPEC_HIDDEN set_cpu_context( const CONTEXT *context );
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__ASM_GLOBAL_FUNC( set_cpu_context,
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".arm\n\t"
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"ldr r2, [r0, #0x44]\n\t" /* context->Cpsr */
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"tst r2, #0x20\n\t" /* thumb? */
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"ldr r1, [r0, #0x40]\n\t" /* context->Pc */
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"orrne r1, r1, #1\n\t" /* Adjust PC according to thumb */
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"biceq r1, r1, #1\n\t" /* Adjust PC according to arm */
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"msr CPSR_f, r2\n\t"
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"ldr lr, [r0, #0x3c]\n\t" /* context->Lr */
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"ldr sp, [r0, #0x38]\n\t" /* context->Sp */
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"push {r1}\n\t"
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"ldmib r0, {r0-r12}\n\t" /* context->R0..R12 */
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"pop {pc}" )
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extern void raise_func_trampoline_thumb( EXCEPTION_RECORD *rec, CONTEXT *context, raise_func func );
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__ASM_GLOBAL_FUNC( raise_func_trampoline_thumb,
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".thumb\n\t"
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"blx r2\n\t"
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"bkpt")
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extern void raise_func_trampoline_arm( EXCEPTION_RECORD *rec, CONTEXT *context, raise_func func );
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__ASM_GLOBAL_FUNC( raise_func_trampoline_arm,
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".arm\n\t"
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"blx r2\n\t"
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"bkpt")
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/***********************************************************************
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* setup_exception_record
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*
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* Setup the exception record and context on the thread stack.
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*/
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static EXCEPTION_RECORD *setup_exception( ucontext_t *sigcontext, raise_func func )
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{
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struct stack_layout
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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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DWORD exception_code = 0;
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stack = (struct stack_layout *)(SP_sig(sigcontext) & ~3);
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stack--; /* push the stack_layout structure */
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stack->rec.ExceptionRecord = NULL;
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stack->rec.ExceptionCode = exception_code;
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stack->rec.ExceptionFlags = EXCEPTION_CONTINUABLE;
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stack->rec.ExceptionAddress = (LPVOID)PC_sig(sigcontext);
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stack->rec.NumberParameters = 0;
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save_context( &stack->context, sigcontext );
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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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if (CPSR_sig(sigcontext) & 0x20)
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PC_sig(sigcontext) = (DWORD)raise_func_trampoline_thumb;
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else
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PC_sig(sigcontext) = (DWORD)raise_func_trampoline_arm;
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REGn_sig(0, sigcontext) = (DWORD)&stack->rec; /* first arg for raise_func */
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REGn_sig(1, sigcontext) = (DWORD)&stack->context; /* second arg for raise_func */
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REGn_sig(2, sigcontext) = (DWORD)func; /* the raise_func as third arg for the trampoline */
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return &stack->rec;
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}
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/**********************************************************************
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* raise_segv_exception
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*/
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static void WINAPI raise_segv_exception( EXCEPTION_RECORD *rec, CONTEXT *context )
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{
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NTSTATUS status;
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switch(rec->ExceptionCode)
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{
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case EXCEPTION_ACCESS_VIOLATION:
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if (rec->NumberParameters == 2)
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{
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if (!(rec->ExceptionCode = unix_funcs->virtual_handle_fault( (void *)rec->ExceptionInformation[1],
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rec->ExceptionInformation[0], FALSE )))
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goto done;
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}
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break;
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}
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status = NtRaiseException( rec, context, TRUE );
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if (status) raise_status( status, rec );
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done:
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set_cpu_context( context );
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}
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/**********************************************************************
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* call_stack_handlers
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*
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* Call the stack handlers chain.
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*/
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static NTSTATUS call_stack_handlers( EXCEPTION_RECORD *rec, CONTEXT *context )
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{
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EXCEPTION_REGISTRATION_RECORD *frame, *dispatch, *nested_frame;
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DWORD res;
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frame = NtCurrentTeb()->Tib.ExceptionList;
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nested_frame = NULL;
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while (frame != (EXCEPTION_REGISTRATION_RECORD*)~0UL)
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{
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/* Check frame address */
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if (!is_valid_frame( frame ))
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{
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rec->ExceptionFlags |= EH_STACK_INVALID;
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break;
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}
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/* Call handler */
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TRACE( "calling handler at %p code=%x flags=%x\n",
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frame->Handler, rec->ExceptionCode, rec->ExceptionFlags );
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res = frame->Handler( rec, frame, context, &dispatch );
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TRACE( "handler at %p returned %x\n", frame->Handler, res );
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if (frame == nested_frame)
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{
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/* no longer nested */
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nested_frame = NULL;
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rec->ExceptionFlags &= ~EH_NESTED_CALL;
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}
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switch(res)
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{
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case ExceptionContinueExecution:
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if (!(rec->ExceptionFlags & EH_NONCONTINUABLE)) return STATUS_SUCCESS;
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return STATUS_NONCONTINUABLE_EXCEPTION;
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case ExceptionContinueSearch:
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break;
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case ExceptionNestedException:
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if (nested_frame < dispatch) nested_frame = dispatch;
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rec->ExceptionFlags |= EH_NESTED_CALL;
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break;
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default:
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return STATUS_INVALID_DISPOSITION;
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}
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frame = frame->Prev;
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}
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return STATUS_UNHANDLED_EXCEPTION;
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}
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/*******************************************************************
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* raise_exception
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*
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* Implementation of NtRaiseException.
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*/
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static NTSTATUS raise_exception( EXCEPTION_RECORD *rec, CONTEXT *context, BOOL first_chance )
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{
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NTSTATUS status;
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if (first_chance)
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{
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DWORD c;
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TRACE( "code=%x flags=%x addr=%p pc=%08x tid=%04x\n",
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rec->ExceptionCode, rec->ExceptionFlags, rec->ExceptionAddress,
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context->Pc, GetCurrentThreadId() );
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for (c = 0; c < rec->NumberParameters; c++)
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TRACE( " info[%d]=%08lx\n", c, rec->ExceptionInformation[c] );
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if (rec->ExceptionCode == EXCEPTION_WINE_STUB)
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{
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if (rec->ExceptionInformation[1] >> 16)
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MESSAGE( "wine: Call from %p to unimplemented function %s.%s, aborting\n",
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rec->ExceptionAddress,
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(char*)rec->ExceptionInformation[0], (char*)rec->ExceptionInformation[1] );
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else
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MESSAGE( "wine: Call from %p to unimplemented function %s.%ld, aborting\n",
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rec->ExceptionAddress,
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(char*)rec->ExceptionInformation[0], rec->ExceptionInformation[1] );
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}
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else
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{
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TRACE( " r0=%08x r1=%08x r2=%08x r3=%08x r4=%08x r5=%08x\n",
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context->R0, context->R1, context->R2, context->R3, context->R4, context->R5 );
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TRACE( " r6=%08x r7=%08x r8=%08x r9=%08x r10=%08x r11=%08x\n",
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context->R6, context->R7, context->R8, context->R9, context->R10, context->R11 );
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TRACE( " r12=%08x sp=%08x lr=%08x pc=%08x cpsr=%08x\n",
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context->R12, context->Sp, context->Lr, context->Pc, context->Cpsr );
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}
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status = send_debug_event( rec, TRUE, context );
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if (status == DBG_CONTINUE || status == DBG_EXCEPTION_HANDLED)
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return STATUS_SUCCESS;
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if (call_vectored_handlers( rec, context ) == EXCEPTION_CONTINUE_EXECUTION)
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return STATUS_SUCCESS;
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if ((status = call_stack_handlers( rec, context )) != STATUS_UNHANDLED_EXCEPTION)
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return status;
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}
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/* last chance exception */
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status = send_debug_event( rec, FALSE, context );
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if (status != DBG_CONTINUE)
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{
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if (rec->ExceptionFlags & EH_STACK_INVALID)
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ERR("Exception frame is not in stack limits => unable to dispatch exception.\n");
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else if (rec->ExceptionCode == STATUS_NONCONTINUABLE_EXCEPTION)
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ERR("Process attempted to continue execution after noncontinuable exception.\n");
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else
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ERR("Unhandled exception code %x flags %x addr %p\n",
|
|
rec->ExceptionCode, rec->ExceptionFlags, rec->ExceptionAddress );
|
|
NtTerminateProcess( NtCurrentProcess(), rec->ExceptionCode );
|
|
}
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
* segv_handler
|
|
*
|
|
* Handler for SIGSEGV and related errors.
|
|
*/
|
|
static void segv_handler( int signal, siginfo_t *info, void *ucontext )
|
|
{
|
|
EXCEPTION_RECORD *rec;
|
|
ucontext_t *context = ucontext;
|
|
|
|
/* check for page fault inside the thread stack */
|
|
if (get_trap_code(signal, context) == TRAP_ARM_PAGEFLT)
|
|
{
|
|
switch (unix_funcs->virtual_handle_stack_fault( info->si_addr ))
|
|
{
|
|
case 1: /* handled */
|
|
return;
|
|
case -1: /* overflow */
|
|
rec = setup_exception( context, raise_segv_exception );
|
|
rec->ExceptionCode = EXCEPTION_STACK_OVERFLOW;
|
|
return;
|
|
}
|
|
}
|
|
|
|
rec = setup_exception( context, raise_segv_exception );
|
|
if (rec->ExceptionCode == EXCEPTION_STACK_OVERFLOW) return;
|
|
|
|
switch(get_trap_code(signal, context))
|
|
{
|
|
case TRAP_ARM_PRIVINFLT: /* Invalid opcode exception */
|
|
rec->ExceptionCode = EXCEPTION_ILLEGAL_INSTRUCTION;
|
|
break;
|
|
case TRAP_ARM_PAGEFLT: /* Page fault */
|
|
rec->ExceptionCode = EXCEPTION_ACCESS_VIOLATION;
|
|
rec->NumberParameters = 2;
|
|
rec->ExceptionInformation[0] = (get_error_code(context) & 0x800) != 0;
|
|
rec->ExceptionInformation[1] = (ULONG_PTR)info->si_addr;
|
|
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;
|
|
}
|
|
}
|
|
|
|
/**********************************************************************
|
|
* trap_handler
|
|
*
|
|
* Handler for SIGTRAP.
|
|
*/
|
|
static void trap_handler( int signal, siginfo_t *info, void *ucontext )
|
|
{
|
|
EXCEPTION_RECORD rec;
|
|
CONTEXT context;
|
|
NTSTATUS status;
|
|
|
|
switch ( info->si_code )
|
|
{
|
|
case TRAP_TRACE:
|
|
rec.ExceptionCode = EXCEPTION_SINGLE_STEP;
|
|
break;
|
|
case TRAP_BRKPT:
|
|
default:
|
|
rec.ExceptionCode = EXCEPTION_BREAKPOINT;
|
|
break;
|
|
}
|
|
|
|
save_context( &context, ucontext );
|
|
rec.ExceptionFlags = EXCEPTION_CONTINUABLE;
|
|
rec.ExceptionRecord = NULL;
|
|
rec.ExceptionAddress = (LPVOID)context.Pc;
|
|
rec.NumberParameters = 0;
|
|
status = raise_exception( &rec, &context, TRUE );
|
|
if (status) raise_status( status, &rec );
|
|
restore_context( &context, ucontext );
|
|
}
|
|
|
|
/**********************************************************************
|
|
* fpe_handler
|
|
*
|
|
* Handler for SIGFPE.
|
|
*/
|
|
static void fpe_handler( int signal, siginfo_t *siginfo, void *sigcontext )
|
|
{
|
|
EXCEPTION_RECORD rec;
|
|
CONTEXT context;
|
|
NTSTATUS status;
|
|
|
|
save_fpu( &context, sigcontext );
|
|
save_context( &context, sigcontext );
|
|
|
|
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;
|
|
}
|
|
rec.ExceptionFlags = EXCEPTION_CONTINUABLE;
|
|
rec.ExceptionRecord = NULL;
|
|
rec.ExceptionAddress = (LPVOID)context.Pc;
|
|
rec.NumberParameters = 0;
|
|
status = raise_exception( &rec, &context, TRUE );
|
|
if (status) raise_status( status, &rec );
|
|
|
|
restore_context( &context, sigcontext );
|
|
restore_fpu( &context, sigcontext );
|
|
}
|
|
|
|
/**********************************************************************
|
|
* int_handler
|
|
*
|
|
* Handler for SIGINT.
|
|
*/
|
|
static void int_handler( int signal, siginfo_t *siginfo, void *sigcontext )
|
|
{
|
|
if (!dispatch_signal(SIGINT))
|
|
{
|
|
EXCEPTION_RECORD rec;
|
|
CONTEXT context;
|
|
NTSTATUS status;
|
|
|
|
save_context( &context, sigcontext );
|
|
rec.ExceptionCode = CONTROL_C_EXIT;
|
|
rec.ExceptionFlags = EXCEPTION_CONTINUABLE;
|
|
rec.ExceptionRecord = NULL;
|
|
rec.ExceptionAddress = (LPVOID)context.Pc;
|
|
rec.NumberParameters = 0;
|
|
status = raise_exception( &rec, &context, TRUE );
|
|
if (status) raise_status( status, &rec );
|
|
restore_context( &context, sigcontext );
|
|
}
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
* abrt_handler
|
|
*
|
|
* Handler for SIGABRT.
|
|
*/
|
|
static void abrt_handler( int signal, siginfo_t *siginfo, void *sigcontext )
|
|
{
|
|
EXCEPTION_RECORD rec;
|
|
CONTEXT context;
|
|
NTSTATUS status;
|
|
|
|
save_context( &context, sigcontext );
|
|
rec.ExceptionCode = EXCEPTION_WINE_ASSERTION;
|
|
rec.ExceptionFlags = EH_NONCONTINUABLE;
|
|
rec.ExceptionRecord = NULL;
|
|
rec.ExceptionAddress = (LPVOID)context.Pc;
|
|
rec.NumberParameters = 0;
|
|
status = raise_exception( &rec, &context, TRUE );
|
|
if (status) raise_status( status, &rec );
|
|
restore_context( &context, sigcontext );
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
* quit_handler
|
|
*
|
|
* Handler for SIGQUIT.
|
|
*/
|
|
static void quit_handler( int signal, siginfo_t *siginfo, void *sigcontext )
|
|
{
|
|
unix_funcs->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;
|
|
|
|
save_context( &context, sigcontext );
|
|
wait_suspend( &context );
|
|
restore_context( &context, sigcontext );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* __wine_set_signal_handler (NTDLL.@)
|
|
*/
|
|
int CDECL __wine_set_signal_handler(unsigned int sig, wine_signal_handler wsh)
|
|
{
|
|
if (sig >= ARRAY_SIZE(handlers)) return -1;
|
|
if (handlers[sig] != NULL) return -2;
|
|
handlers[sig] = wsh;
|
|
return 0;
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
* signal_init_process
|
|
*/
|
|
void signal_init_process(void)
|
|
{
|
|
struct sigaction sig_act;
|
|
|
|
sig_act.sa_mask = server_block_set;
|
|
sig_act.sa_flags = SA_RESTART | SA_SIGINFO;
|
|
|
|
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 = segv_handler;
|
|
if (sigaction( SIGSEGV, &sig_act, NULL ) == -1) goto error;
|
|
if (sigaction( SIGILL, &sig_act, NULL ) == -1) goto error;
|
|
#ifdef SIGBUS
|
|
if (sigaction( SIGBUS, &sig_act, NULL ) == -1) goto error;
|
|
#endif
|
|
|
|
#ifdef SIGTRAP
|
|
sig_act.sa_sigaction = trap_handler;
|
|
if (sigaction( SIGTRAP, &sig_act, NULL ) == -1) goto error;
|
|
#endif
|
|
return;
|
|
|
|
error:
|
|
perror("sigaction");
|
|
exit(1);
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* RtlUnwind (NTDLL.@)
|
|
*/
|
|
void WINAPI RtlUnwind( void *endframe, void *target_ip, EXCEPTION_RECORD *rec, void *retval )
|
|
{
|
|
CONTEXT context;
|
|
EXCEPTION_RECORD record;
|
|
EXCEPTION_REGISTRATION_RECORD *frame, *dispatch;
|
|
DWORD res;
|
|
|
|
RtlCaptureContext( &context );
|
|
context.R0 = (DWORD)retval;
|
|
|
|
/* build an exception record, if we do not have one */
|
|
if (!rec)
|
|
{
|
|
record.ExceptionCode = STATUS_UNWIND;
|
|
record.ExceptionFlags = 0;
|
|
record.ExceptionRecord = NULL;
|
|
record.ExceptionAddress = (void *)context.Pc;
|
|
record.NumberParameters = 0;
|
|
rec = &record;
|
|
}
|
|
|
|
rec->ExceptionFlags |= EH_UNWINDING | (endframe ? 0 : EH_EXIT_UNWIND);
|
|
|
|
TRACE( "code=%x flags=%x\n", rec->ExceptionCode, rec->ExceptionFlags );
|
|
|
|
/* get chain of exception frames */
|
|
frame = NtCurrentTeb()->Tib.ExceptionList;
|
|
while ((frame != (EXCEPTION_REGISTRATION_RECORD*)~0UL) && (frame != endframe))
|
|
{
|
|
/* Check frame address */
|
|
if (endframe && ((void*)frame > endframe))
|
|
raise_status( STATUS_INVALID_UNWIND_TARGET, rec );
|
|
|
|
if (!is_valid_frame( frame )) raise_status( STATUS_BAD_STACK, rec );
|
|
|
|
/* Call handler */
|
|
TRACE( "calling handler at %p code=%x flags=%x\n",
|
|
frame->Handler, rec->ExceptionCode, rec->ExceptionFlags );
|
|
res = frame->Handler(rec, frame, &context, &dispatch);
|
|
TRACE( "handler at %p returned %x\n", frame->Handler, res );
|
|
|
|
switch(res)
|
|
{
|
|
case ExceptionContinueSearch:
|
|
break;
|
|
case ExceptionCollidedUnwind:
|
|
frame = dispatch;
|
|
break;
|
|
default:
|
|
raise_status( STATUS_INVALID_DISPOSITION, rec );
|
|
break;
|
|
}
|
|
frame = __wine_pop_frame( frame );
|
|
}
|
|
}
|
|
|
|
/*******************************************************************
|
|
* NtRaiseException (NTDLL.@)
|
|
*/
|
|
NTSTATUS WINAPI NtRaiseException( EXCEPTION_RECORD *rec, CONTEXT *context, BOOL first_chance )
|
|
{
|
|
NTSTATUS status = raise_exception( rec, context, first_chance );
|
|
if (status == STATUS_SUCCESS) NtSetContextThread( GetCurrentThread(), context );
|
|
return status;
|
|
}
|
|
|
|
/***********************************************************************
|
|
* RtlRaiseException (NTDLL.@)
|
|
*/
|
|
void WINAPI RtlRaiseException( EXCEPTION_RECORD *rec )
|
|
{
|
|
CONTEXT context;
|
|
NTSTATUS status;
|
|
|
|
RtlCaptureContext( &context );
|
|
rec->ExceptionAddress = (LPVOID)context.Pc;
|
|
status = raise_exception( rec, &context, TRUE );
|
|
if (status) raise_status( status, rec );
|
|
}
|
|
|
|
/*************************************************************************
|
|
* RtlCaptureStackBackTrace (NTDLL.@)
|
|
*/
|
|
USHORT WINAPI RtlCaptureStackBackTrace( ULONG skip, ULONG count, PVOID *buffer, ULONG *hash )
|
|
{
|
|
FIXME( "(%d, %d, %p, %p) stub!\n", skip, count, buffer, hash );
|
|
return 0;
|
|
}
|
|
|
|
/**********************************************************************
|
|
* DbgBreakPoint (NTDLL.@)
|
|
*/
|
|
void WINAPI DbgBreakPoint(void)
|
|
{
|
|
kill(getpid(), SIGTRAP);
|
|
}
|
|
|
|
/**********************************************************************
|
|
* DbgUserBreakPoint (NTDLL.@)
|
|
*/
|
|
void WINAPI DbgUserBreakPoint(void)
|
|
{
|
|
kill(getpid(), SIGTRAP);
|
|
}
|
|
|
|
/**********************************************************************
|
|
* NtCurrentTeb (NTDLL.@)
|
|
*/
|
|
TEB * WINAPI NtCurrentTeb(void)
|
|
{
|
|
return unix_funcs->NtCurrentTeb();
|
|
}
|
|
|
|
#endif /* __arm__ */
|