837 lines
25 KiB
C
837 lines
25 KiB
C
/*
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* PowerPC signal handling routines
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*
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* Copyright 2002 Marcus Meissner, SuSE Linux AG
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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 __powerpc__
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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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#include <sys/types.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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#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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WINE_DEFAULT_DEBUG_CHANNEL(seh);
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WINE_DECLARE_DEBUG_CHANNEL(relay);
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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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/* All Registers access - only for local access */
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# define REG_sig(reg_name, context) ((context)->uc_mcontext.regs->reg_name)
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/* Gpr Registers access */
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# define GPR_sig(reg_num, context) REG_sig(gpr[reg_num], context)
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# define IAR_sig(context) REG_sig(nip, context) /* Program counter */
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# define MSR_sig(context) REG_sig(msr, context) /* Machine State Register (Supervisor) */
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# define CTR_sig(context) REG_sig(ctr, context) /* Count register */
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# define XER_sig(context) REG_sig(xer, context) /* User's integer exception register */
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# define LR_sig(context) REG_sig(link, context) /* Link register */
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# define CR_sig(context) REG_sig(ccr, context) /* Condition register */
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/* Float Registers access */
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# define FLOAT_sig(reg_num, context) (((double*)((char*)((context)->uc_mcontext.regs+48*4)))[reg_num])
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# define FPSCR_sig(context) (*(int*)((char*)((context)->uc_mcontext.regs+(48+32*2)*4)))
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/* Exception Registers access */
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# define DAR_sig(context) REG_sig(dar, context)
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# define DSISR_sig(context) REG_sig(dsisr, context)
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# define TRAP_sig(context) REG_sig(trap, context)
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#endif /* linux */
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#ifdef __APPLE__
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/* All Registers access - only for local access */
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# define REG_sig(reg_name, context) ((context)->uc_mcontext->ss.reg_name)
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# define FLOATREG_sig(reg_name, context) ((context)->uc_mcontext->fs.reg_name)
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# define EXCEPREG_sig(reg_name, context) ((context)->uc_mcontext->es.reg_name)
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# define VECREG_sig(reg_name, context) ((context)->uc_mcontext->vs.reg_name)
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/* Gpr Registers access */
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# define GPR_sig(reg_num, context) REG_sig(r##reg_num, context)
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# define IAR_sig(context) REG_sig(srr0, context) /* Program counter */
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# define MSR_sig(context) REG_sig(srr1, context) /* Machine State Register (Supervisor) */
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# define CTR_sig(context) REG_sig(ctr, context)
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# define XER_sig(context) REG_sig(xer, context) /* Link register */
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# define LR_sig(context) REG_sig(lr, context) /* User's integer exception register */
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# define CR_sig(context) REG_sig(cr, context) /* Condition register */
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/* Float Registers access */
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# define FLOAT_sig(reg_num, context) FLOATREG_sig(fpregs[reg_num], context)
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# define FPSCR_sig(context) FLOATREG_sig(fpscr, context)
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/* Exception Registers access */
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# define DAR_sig(context) EXCEPREG_sig(dar, context) /* Fault registers for coredump */
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# define DSISR_sig(context) EXCEPREG_sig(dsisr, context)
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# define TRAP_sig(context) EXCEPREG_sig(exception, context) /* number of powerpc exception taken */
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/* Signal defs : Those are undefined on darwin
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SIGBUS
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#undef BUS_ADRERR
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#undef BUS_OBJERR
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SIGILL
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#undef ILL_ILLOPN
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#undef ILL_ILLTRP
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#undef ILL_ILLADR
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#undef ILL_COPROC
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#undef ILL_PRVREG
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#undef ILL_BADSTK
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SIGTRAP
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#undef TRAP_BRKPT
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#undef TRAP_TRACE
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SIGFPE
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*/
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#endif /* __APPLE__ */
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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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* 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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* 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->Gpr##x = GPR_sig(x,sigcontext)
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/* Save Gpr 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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C(11); C(12); C(13); C(14); C(15); C(16); C(17); C(18); C(19); C(20);
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C(21); C(22); C(23); C(24); C(25); C(26); C(27); C(28); C(29); C(30);
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C(31);
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#undef C
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context->Iar = IAR_sig(sigcontext); /* Program Counter */
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context->Msr = MSR_sig(sigcontext); /* Machine State Register (Supervisor) */
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context->Ctr = CTR_sig(sigcontext);
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context->Xer = XER_sig(sigcontext);
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context->Lr = LR_sig(sigcontext);
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context->Cr = CR_sig(sigcontext);
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/* Saving Exception regs */
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context->Dar = DAR_sig(sigcontext);
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context->Dsisr = DSISR_sig(sigcontext);
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context->Trap = TRAP_sig(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) GPR_sig(x,sigcontext) = context->Gpr##x
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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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C(11); C(12); C(13); C(14); C(15); C(16); C(17); C(18); C(19); C(20);
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C(21); C(22); C(23); C(24); C(25); C(26); C(27); C(28); C(29); C(30);
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C(31);
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#undef C
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IAR_sig(sigcontext) = context->Iar; /* Program Counter */
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MSR_sig(sigcontext) = context->Msr; /* Machine State Register (Supervisor) */
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CTR_sig(sigcontext) = context->Ctr;
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XER_sig(sigcontext) = context->Xer;
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LR_sig(sigcontext) = context->Lr;
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CR_sig(sigcontext) = context->Cr;
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/* Setting Exception regs */
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DAR_sig(sigcontext) = context->Dar;
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DSISR_sig(sigcontext) = context->Dsisr;
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TRAP_sig(sigcontext) = context->Trap;
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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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#define C(x) context->Fpr##x = FLOAT_sig(x,sigcontext)
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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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C(11); C(12); C(13); C(14); C(15); C(16); C(17); C(18); C(19); C(20);
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C(21); C(22); C(23); C(24); C(25); C(26); C(27); C(28); C(29); C(30);
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C(31);
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#undef C
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context->Fpscr = FPSCR_sig(sigcontext);
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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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#define C(x) FLOAT_sig(x,sigcontext) = context->Fpr##x
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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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C(11); C(12); C(13); C(14); C(15); C(16); C(17); C(18); C(19); C(20);
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C(21); C(22); C(23); C(24); C(25); C(26); C(27); C(28); C(29); C(30);
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C(31);
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#undef C
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FPSCR_sig(sigcontext) = context->Fpscr;
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}
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/***********************************************************************
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* RtlCaptureContext (NTDLL.@)
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*/
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void WINAPI RtlCaptureContext( CONTEXT *context )
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{
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FIXME("not implemented\n");
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memset( context, 0, sizeof(*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_POINTERS ptrs;
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FIXME( "not implemented on PowerPC\n" );
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/* hack: call unhandled exception filter directly */
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ptrs.ExceptionRecord = rec;
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ptrs.ContextRecord = context;
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call_unhandled_exception_filter( &ptrs );
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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 ip=%x tid=%04x\n",
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rec->ExceptionCode, rec->ExceptionFlags, rec->ExceptionAddress,
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context->Iar, 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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/* FIXME: dump context */
|
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}
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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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}
|
|
|
|
/* last chance exception */
|
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|
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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",
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rec->ExceptionCode, rec->ExceptionFlags, rec->ExceptionAddress );
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NtTerminateProcess( NtCurrentProcess(), rec->ExceptionCode );
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}
|
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return STATUS_SUCCESS;
|
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}
|
|
|
|
|
|
/**********************************************************************
|
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* segv_handler
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*
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* Handler for SIGSEGV and related errors.
|
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*/
|
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static void segv_handler( int signal, siginfo_t *siginfo, void *sigcontext )
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{
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EXCEPTION_RECORD rec;
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CONTEXT context;
|
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NTSTATUS status;
|
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save_context( &context, sigcontext );
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|
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rec.ExceptionRecord = NULL;
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rec.ExceptionFlags = EXCEPTION_CONTINUABLE;
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rec.ExceptionAddress = (LPVOID)context.Iar;
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rec.NumberParameters = 0;
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|
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switch (signal)
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{
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case SIGSEGV:
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switch (siginfo->si_code & 0xffff)
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{
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case SEGV_MAPERR:
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case SEGV_ACCERR:
|
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rec.NumberParameters = 2;
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rec.ExceptionInformation[0] = 0; /* FIXME ? */
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rec.ExceptionInformation[1] = (ULONG_PTR)siginfo->si_addr;
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if (!(rec.ExceptionCode = virtual_handle_fault(siginfo->si_addr, rec.ExceptionInformation[0], FALSE)))
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goto done;
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break;
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default:
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FIXME("Unhandled SIGSEGV/%x\n",siginfo->si_code);
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break;
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}
|
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break;
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case SIGBUS:
|
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switch (siginfo->si_code & 0xffff)
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{
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case BUS_ADRALN:
|
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rec.ExceptionCode = EXCEPTION_DATATYPE_MISALIGNMENT;
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break;
|
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#ifdef BUS_ADRERR
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case BUS_ADRERR:
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#endif
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#ifdef BUS_OBJERR
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case BUS_OBJERR:
|
|
/* FIXME: correct for all cases ? */
|
|
rec.NumberParameters = 2;
|
|
rec.ExceptionInformation[0] = 0; /* FIXME ? */
|
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rec.ExceptionInformation[1] = (ULONG_PTR)siginfo->si_addr;
|
|
if (!(rec.ExceptionCode = virtual_handle_fault(siginfo->si_addr, rec.ExceptionInformation[0], FALSE)))
|
|
goto done;
|
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break;
|
|
#endif
|
|
default:
|
|
FIXME("Unhandled SIGBUS/%x\n",siginfo->si_code);
|
|
break;
|
|
}
|
|
break;
|
|
case SIGILL:
|
|
switch (siginfo->si_code & 0xffff)
|
|
{
|
|
case ILL_ILLOPC: /* illegal opcode */
|
|
#ifdef ILL_ILLOPN
|
|
case ILL_ILLOPN: /* illegal operand */
|
|
#endif
|
|
#ifdef ILL_ILLADR
|
|
case ILL_ILLADR: /* illegal addressing mode */
|
|
#endif
|
|
#ifdef ILL_ILLTRP
|
|
case ILL_ILLTRP: /* illegal trap */
|
|
#endif
|
|
#ifdef ILL_COPROC
|
|
case ILL_COPROC: /* coprocessor error */
|
|
#endif
|
|
rec.ExceptionCode = EXCEPTION_ILLEGAL_INSTRUCTION;
|
|
break;
|
|
case ILL_PRVOPC: /* privileged opcode */
|
|
#ifdef ILL_PRVREG
|
|
case ILL_PRVREG: /* privileged register */
|
|
#endif
|
|
rec.ExceptionCode = EXCEPTION_PRIV_INSTRUCTION;
|
|
break;
|
|
#ifdef ILL_BADSTK
|
|
case ILL_BADSTK: /* internal stack error */
|
|
rec.ExceptionCode = EXCEPTION_STACK_OVERFLOW;
|
|
break;
|
|
#endif
|
|
default:
|
|
FIXME("Unhandled SIGILL/%x\n", siginfo->si_code);
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
status = raise_exception( &rec, &context, TRUE );
|
|
if (status) raise_status( status, &rec );
|
|
done:
|
|
restore_context( &context, sigcontext );
|
|
}
|
|
|
|
/**********************************************************************
|
|
* trap_handler
|
|
*
|
|
* Handler for SIGTRAP.
|
|
*/
|
|
static void trap_handler( int signal, siginfo_t *siginfo, void *sigcontext )
|
|
{
|
|
EXCEPTION_RECORD rec;
|
|
CONTEXT context;
|
|
NTSTATUS status;
|
|
|
|
save_context( &context, sigcontext );
|
|
|
|
rec.ExceptionFlags = EXCEPTION_CONTINUABLE;
|
|
rec.ExceptionRecord = NULL;
|
|
rec.ExceptionAddress = (LPVOID)context.Iar;
|
|
rec.NumberParameters = 0;
|
|
|
|
/* FIXME: check if we might need to modify PC */
|
|
switch (siginfo->si_code & 0xffff)
|
|
{
|
|
#ifdef TRAP_BRKPT
|
|
case TRAP_BRKPT:
|
|
rec.ExceptionCode = EXCEPTION_BREAKPOINT;
|
|
break;
|
|
#endif
|
|
#ifdef TRAP_TRACE
|
|
case TRAP_TRACE:
|
|
rec.ExceptionCode = EXCEPTION_SINGLE_STEP;
|
|
break;
|
|
#endif
|
|
default:
|
|
FIXME("Unhandled SIGTRAP/%x\n", siginfo->si_code);
|
|
break;
|
|
}
|
|
status = raise_exception( &rec, &context, TRUE );
|
|
if (status) raise_status( status, &rec );
|
|
restore_context( &context, sigcontext );
|
|
}
|
|
|
|
/**********************************************************************
|
|
* 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.Iar;
|
|
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.Iar;
|
|
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.Iar;
|
|
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( PVOID pEndFrame, PVOID targetIp, PEXCEPTION_RECORD pRecord, PVOID retval )
|
|
{
|
|
FIXME( "Not implemented on PowerPC\n" );
|
|
}
|
|
|
|
/*******************************************************************
|
|
* 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 = (void *)context.Iar;
|
|
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;
|
|
}
|
|
|
|
/***********************************************************************
|
|
* call_thread_entry_point
|
|
*/
|
|
static void WINAPI call_thread_entry_point( LPTHREAD_START_ROUTINE entry, void *arg )
|
|
{
|
|
__TRY
|
|
{
|
|
TRACE_(relay)( "\1Starting thread proc %p (arg=%p)\n", entry, arg );
|
|
RtlExitUserThread( entry( arg ));
|
|
}
|
|
__EXCEPT(call_unhandled_exception_filter)
|
|
{
|
|
NtTerminateThread( GetCurrentThread(), GetExceptionCode() );
|
|
}
|
|
__ENDTRY
|
|
abort(); /* should not be reached */
|
|
}
|
|
|
|
typedef void (WINAPI *thread_start_func)(LPTHREAD_START_ROUTINE,void *);
|
|
|
|
struct startup_info
|
|
{
|
|
thread_start_func start;
|
|
LPTHREAD_START_ROUTINE entry;
|
|
void *arg;
|
|
BOOL suspend;
|
|
};
|
|
|
|
/* FIXME: should set the full context instead */
|
|
extern void DECLSPEC_NORETURN switch_to_stack( void (*func)(void *), void *arg, void *stack );
|
|
__ASM_GLOBAL_FUNC( switch_to_stack,
|
|
"subi 5, 5, 16\n\t" /* reserve space on new stack */
|
|
"mtctr 3\n\t" /* func -> ctr */
|
|
"mr 3,4\n\t" /* args -> function param 1 (r3) */
|
|
"mr 1,5\n\t" /* stack */
|
|
"li 0, 0\n\t" /* zero */
|
|
"stw 0, 0(1)\n\t" /* bottom of stack */
|
|
"stwu 1, -16(1)\n\t" /* create a frame for this function */
|
|
"bctrl" ) /* call ctr */
|
|
|
|
/***********************************************************************
|
|
* thread_startup
|
|
*/
|
|
static void thread_startup( void *param )
|
|
{
|
|
CONTEXT context = { 0 };
|
|
struct startup_info *info = param;
|
|
|
|
/* build the initial context */
|
|
context.ContextFlags = CONTEXT_FULL;
|
|
context.Gpr1 = (DWORD)NtCurrentTeb()->Tib.StackBase;
|
|
context.Gpr3 = (DWORD)info->entry;
|
|
context.Gpr4 = (DWORD)info->arg;
|
|
context.Iar = (DWORD)info->start;
|
|
|
|
if (info->suspend) wait_suspend( &context );
|
|
LdrInitializeThunk( &context, (void **)&context.Gpr3, 0, 0 );
|
|
|
|
((thread_start_func)context.Iar)( (LPTHREAD_START_ROUTINE)context.Gpr3, (void *)context.Gpr4 );
|
|
}
|
|
|
|
/***********************************************************************
|
|
* signal_start_thread
|
|
*
|
|
* Thread startup sequence:
|
|
* signal_start_thread()
|
|
* -> thread_startup()
|
|
* -> call_thread_entry_point()
|
|
*/
|
|
void signal_start_thread( LPTHREAD_START_ROUTINE entry, void *arg, BOOL suspend )
|
|
{
|
|
struct startup_info info = { call_thread_entry_point, entry, arg, suspend };
|
|
switch_to_stack( thread_startup, &info, NtCurrentTeb()->Tib.StackBase );
|
|
}
|
|
|
|
/**********************************************************************
|
|
* signal_start_process
|
|
*
|
|
* Process startup sequence:
|
|
* signal_start_process()
|
|
* -> thread_startup()
|
|
* -> kernel32_start_process()
|
|
*/
|
|
void signal_start_process( LPTHREAD_START_ROUTINE entry, BOOL suspend )
|
|
{
|
|
struct startup_info info = { kernel32_start_process, entry, NtCurrentTeb()->Peb, suspend };
|
|
switch_to_stack( thread_startup, &info, NtCurrentTeb()->Tib.StackBase );
|
|
}
|
|
|
|
/**********************************************************************
|
|
* 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 /* __powerpc__ */
|