forked from Mirrors/wine-wine
908 lines
29 KiB
C
908 lines
29 KiB
C
/*
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* ARM64 signal handling routines
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*
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* Copyright 2010-2013 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 __aarch64__
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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 <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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#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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#ifdef HAVE_LIBUNWIND
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# define UNW_LOCAL_ONLY
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# include <libunwind.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/exception.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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/* 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.regs[reg_num])
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/* Special Registers access */
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# define SP_sig(context) REG_sig(sp, context) /* Stack pointer */
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# define PC_sig(context) REG_sig(pc, context) /* Program counter */
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# define PSTATE_sig(context) REG_sig(pstate, context) /* Current State Register */
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# define FP_sig(context) REGn_sig(29, context) /* Frame pointer */
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# define LR_sig(context) REGn_sig(30, context) /* Link Register */
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static struct _aarch64_ctx *get_extended_sigcontext( ucontext_t *sigcontext, unsigned int magic )
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{
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struct _aarch64_ctx *ctx = (struct _aarch64_ctx *)sigcontext->uc_mcontext.__reserved;
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while ((char *)ctx < (char *)(&sigcontext->uc_mcontext + 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 _aarch64_ctx *)((char *)ctx + ctx->size);
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}
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return NULL;
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}
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static struct fpsimd_context *get_fpsimd_context( ucontext_t *sigcontext )
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{
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return (struct fpsimd_context *)get_extended_sigcontext( sigcontext, FPSIMD_MAGIC );
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}
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static DWORD64 get_fault_esr( ucontext_t *sigcontext )
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{
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struct esr_context *esr = (struct esr_context *)get_extended_sigcontext( sigcontext, ESR_MAGIC );
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if (esr) return esr->esr;
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return 0;
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}
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#endif /* linux */
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static pthread_key_t teb_key;
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static const size_t teb_size = 0x2000; /* we reserve two pages for the TEB */
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typedef void (*raise_func)( EXCEPTION_RECORD *rec, CONTEXT *context );
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/* stack layout when calling an exception raise function */
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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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void *redzone[2];
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};
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struct arm64_thread_data
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{
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void *exit_frame; /* exit frame pointer */
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CONTEXT *context; /* context to set with SIGUSR2 */
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};
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C_ASSERT( sizeof(struct arm64_thread_data) <= sizeof(((TEB *)0)->SystemReserved2) );
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C_ASSERT( offsetof( TEB, SystemReserved2 ) + offsetof( struct arm64_thread_data, exit_frame ) == 0x300 );
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static inline struct arm64_thread_data *arm64_thread_data(void)
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{
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return (struct arm64_thread_data *)NtCurrentTeb()->SystemReserved2;
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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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DWORD i;
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context->ContextFlags = CONTEXT_FULL;
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context->u.s.Fp = FP_sig(sigcontext); /* Frame pointer */
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context->u.s.Lr = LR_sig(sigcontext); /* Link register */
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context->Sp = SP_sig(sigcontext); /* Stack pointer */
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context->Pc = PC_sig(sigcontext); /* Program Counter */
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context->Cpsr = PSTATE_sig(sigcontext); /* Current State Register */
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for (i = 0; i <= 28; i++) context->u.X[i] = REGn_sig( i, 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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DWORD i;
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FP_sig(sigcontext) = context->u.s.Fp; /* Frame pointer */
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LR_sig(sigcontext) = context->u.s.Lr; /* Link register */
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SP_sig(sigcontext) = context->Sp; /* Stack pointer */
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PC_sig(sigcontext) = context->Pc; /* Program Counter */
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PSTATE_sig(sigcontext) = context->Cpsr; /* Current State Register */
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for (i = 0; i <= 28; i++) REGn_sig( i, sigcontext ) = context->u.X[i];
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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 void save_fpu( CONTEXT *context, ucontext_t *sigcontext )
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{
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struct fpsimd_context *fp = get_fpsimd_context( sigcontext );
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if (!fp) return;
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context->ContextFlags |= CONTEXT_FLOATING_POINT;
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context->Fpcr = fp->fpcr;
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context->Fpsr = fp->fpsr;
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memcpy( context->V, fp->vregs, sizeof(context->V) );
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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 void restore_fpu( CONTEXT *context, ucontext_t *sigcontext )
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{
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struct fpsimd_context *fp = get_fpsimd_context( sigcontext );
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if (!fp) return;
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fp->fpcr = context->Fpcr;
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fp->fpsr = context->Fpsr;
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memcpy( fp->vregs, context->V, sizeof(fp->vregs) );
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}
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/***********************************************************************
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* get_server_context_flags
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*
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* Convert CPU-specific flags to generic server flags
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*/
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static unsigned int get_server_context_flags( DWORD flags )
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{
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unsigned int ret = 0;
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flags &= ~CONTEXT_ARM64; /* get rid of CPU id */
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if (flags & CONTEXT_CONTROL) ret |= SERVER_CTX_CONTROL;
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if (flags & CONTEXT_INTEGER) ret |= SERVER_CTX_INTEGER;
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if (flags & CONTEXT_FLOATING_POINT) ret |= SERVER_CTX_FLOATING_POINT;
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if (flags & CONTEXT_DEBUG_REGISTERS) ret |= SERVER_CTX_DEBUG_REGISTERS;
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return ret;
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}
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/***********************************************************************
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* copy_context
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*
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* Copy a register context according to the flags.
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*/
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static void copy_context( CONTEXT *to, const CONTEXT *from, DWORD flags )
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{
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flags &= ~CONTEXT_ARM64; /* get rid of CPU id */
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if (flags & CONTEXT_CONTROL)
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{
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to->u.s.Fp = from->u.s.Fp;
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to->u.s.Lr = from->u.s.Lr;
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to->Sp = from->Sp;
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to->Pc = from->Pc;
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to->Cpsr = from->Cpsr;
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}
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if (flags & CONTEXT_INTEGER)
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{
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memcpy( to->u.X, from->u.X, sizeof(to->u.X) );
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}
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if (flags & CONTEXT_FLOATING_POINT)
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{
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memcpy( to->V, from->V, sizeof(to->V) );
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to->Fpcr = from->Fpcr;
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to->Fpsr = from->Fpsr;
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}
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if (flags & CONTEXT_DEBUG_REGISTERS)
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{
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memcpy( to->Bcr, from->Bcr, sizeof(to->Bcr) );
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memcpy( to->Bvr, from->Bvr, sizeof(to->Bvr) );
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memcpy( to->Wcr, from->Wcr, sizeof(to->Wcr) );
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memcpy( to->Wvr, from->Wvr, sizeof(to->Wvr) );
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}
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}
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/***********************************************************************
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* context_to_server
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*
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* Convert a register context to the server format.
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*/
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NTSTATUS context_to_server( context_t *to, const CONTEXT *from )
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{
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DWORD i, flags = from->ContextFlags & ~CONTEXT_ARM64; /* get rid of CPU id */
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memset( to, 0, sizeof(*to) );
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to->cpu = CPU_ARM64;
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if (flags & CONTEXT_CONTROL)
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{
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to->flags |= SERVER_CTX_CONTROL;
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to->integer.arm64_regs.x[29] = from->u.s.Fp;
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to->integer.arm64_regs.x[30] = from->u.s.Lr;
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to->ctl.arm64_regs.sp = from->Sp;
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to->ctl.arm64_regs.pc = from->Pc;
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to->ctl.arm64_regs.pstate = from->Cpsr;
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}
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if (flags & CONTEXT_INTEGER)
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{
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to->flags |= SERVER_CTX_INTEGER;
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for (i = 0; i <= 28; i++) to->integer.arm64_regs.x[i] = from->u.X[i];
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}
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if (flags & CONTEXT_FLOATING_POINT)
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{
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to->flags |= SERVER_CTX_FLOATING_POINT;
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for (i = 0; i < 32; i++)
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{
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to->fp.arm64_regs.q[i].low = from->V[i].s.Low;
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to->fp.arm64_regs.q[i].high = from->V[i].s.High;
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}
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to->fp.arm64_regs.fpcr = from->Fpcr;
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to->fp.arm64_regs.fpsr = from->Fpsr;
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}
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if (flags & CONTEXT_DEBUG_REGISTERS)
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{
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to->flags |= SERVER_CTX_DEBUG_REGISTERS;
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for (i = 0; i < ARM64_MAX_BREAKPOINTS; i++) to->debug.arm64_regs.bcr[i] = from->Bcr[i];
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for (i = 0; i < ARM64_MAX_BREAKPOINTS; i++) to->debug.arm64_regs.bvr[i] = from->Bvr[i];
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for (i = 0; i < ARM64_MAX_WATCHPOINTS; i++) to->debug.arm64_regs.wcr[i] = from->Wcr[i];
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for (i = 0; i < ARM64_MAX_WATCHPOINTS; i++) to->debug.arm64_regs.wvr[i] = from->Wvr[i];
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}
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return STATUS_SUCCESS;
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}
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/***********************************************************************
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* context_from_server
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*
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* Convert a register context from the server format.
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*/
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NTSTATUS context_from_server( CONTEXT *to, const context_t *from )
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{
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DWORD i;
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if (from->cpu != CPU_ARM64) return STATUS_INVALID_PARAMETER;
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to->ContextFlags = CONTEXT_ARM64;
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if (from->flags & SERVER_CTX_CONTROL)
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{
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to->ContextFlags |= CONTEXT_CONTROL;
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to->u.s.Fp = from->integer.arm64_regs.x[29];
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to->u.s.Lr = from->integer.arm64_regs.x[30];
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to->Sp = from->ctl.arm64_regs.sp;
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to->Pc = from->ctl.arm64_regs.pc;
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to->Cpsr = from->ctl.arm64_regs.pstate;
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}
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if (from->flags & SERVER_CTX_INTEGER)
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{
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to->ContextFlags |= CONTEXT_INTEGER;
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for (i = 0; i <= 28; i++) to->u.X[i] = from->integer.arm64_regs.x[i];
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}
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if (from->flags & SERVER_CTX_FLOATING_POINT)
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{
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to->ContextFlags |= CONTEXT_FLOATING_POINT;
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for (i = 0; i < 32; i++)
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{
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to->V[i].s.Low = from->fp.arm64_regs.q[i].low;
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to->V[i].s.High = from->fp.arm64_regs.q[i].high;
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}
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to->Fpcr = from->fp.arm64_regs.fpcr;
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to->Fpsr = from->fp.arm64_regs.fpsr;
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}
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if (from->flags & SERVER_CTX_DEBUG_REGISTERS)
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{
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to->ContextFlags |= CONTEXT_DEBUG_REGISTERS;
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for (i = 0; i < ARM64_MAX_BREAKPOINTS; i++) to->Bcr[i] = from->debug.arm64_regs.bcr[i];
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for (i = 0; i < ARM64_MAX_BREAKPOINTS; i++) to->Bvr[i] = from->debug.arm64_regs.bvr[i];
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for (i = 0; i < ARM64_MAX_WATCHPOINTS; i++) to->Wcr[i] = from->debug.arm64_regs.wcr[i];
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for (i = 0; i < ARM64_MAX_WATCHPOINTS; i++) to->Wvr[i] = from->debug.arm64_regs.wvr[i];
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}
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return STATUS_SUCCESS;
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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 = STATUS_SUCCESS;
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BOOL self = (handle == GetCurrentThread());
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if (self && (context->ContextFlags & (CONTEXT_DEBUG_REGISTERS & ~CONTEXT_ARM64))) self = FALSE;
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if (!self)
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{
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context_t server_context;
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context_to_server( &server_context, context );
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ret = set_thread_context( handle, &server_context, &self );
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}
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if (self && ret == STATUS_SUCCESS)
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{
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InterlockedExchangePointer( (void **)&arm64_thread_data()->context, (void *)context );
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raise( SIGUSR2 );
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}
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return ret;
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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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NTSTATUS ret;
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DWORD needed_flags = context->ContextFlags;
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BOOL self = (handle == GetCurrentThread());
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if (!self)
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{
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context_t server_context;
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unsigned int server_flags = get_server_context_flags( context->ContextFlags );
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if ((ret = get_thread_context( handle, &server_context, server_flags, &self ))) return ret;
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if ((ret = context_from_server( context, &server_context ))) return ret;
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needed_flags &= ~context->ContextFlags;
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}
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if (self && needed_flags)
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{
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CONTEXT ctx;
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RtlCaptureContext( &ctx );
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copy_context( context, &ctx, ctx.ContextFlags & needed_flags );
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context->ContextFlags |= ctx.ContextFlags & needed_flags;
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}
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return STATUS_SUCCESS;
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}
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/***********************************************************************
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* setup_exception
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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 struct stack_layout *setup_exception( ucontext_t *sigcontext )
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{
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struct stack_layout *stack;
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DWORD exception_code = 0;
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/* push the stack_layout structure */
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stack = (struct stack_layout *)((SP_sig(sigcontext) - sizeof(*stack)) & ~15);
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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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save_fpu( &stack->context, sigcontext );
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return stack;
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}
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extern void raise_func_trampoline( EXCEPTION_RECORD *rec, CONTEXT *context, raise_func func, void *sp );
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__ASM_GLOBAL_FUNC( raise_func_trampoline,
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__ASM_CFI(".cfi_signal_frame\n\t")
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"stp x29, x30, [sp, #-0x20]!\n\t"
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__ASM_CFI(".cfi_def_cfa_offset 32\n\t")
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__ASM_CFI(".cfi_offset 29, -32\n\t")
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__ASM_CFI(".cfi_offset 30, -24\n\t")
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"mov x29, sp\n\t"
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__ASM_CFI(".cfi_def_cfa_register 29\n\t")
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"str x3, [sp, 0x10]\n\t"
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__ASM_CFI(".cfi_remember_state\n\t")
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__ASM_CFI(".cfi_escape 0x0f,0x03,0x8d,0x10,0x06\n\t") /* CFA */
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__ASM_CFI(".cfi_escape 0x10,0x1d,0x02,0x8d,0x00\n\t") /* x29 */
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__ASM_CFI(".cfi_escape 0x10,0x1e,0x02,0x8d,0x08\n\t") /* x30 */
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"blr x2\n\t"
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__ASM_CFI(".cfi_restore_state\n\t")
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"brk #1")
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/***********************************************************************
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* setup_raise_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_raise_exception( ucontext_t *sigcontext, struct stack_layout *stack )
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{
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NTSTATUS status = send_debug_event( &stack->rec, &stack->context, TRUE );
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|
|
if (status == DBG_CONTINUE || status == DBG_EXCEPTION_HANDLED)
|
|
{
|
|
restore_context( &stack->context, sigcontext );
|
|
return;
|
|
}
|
|
REGn_sig(3, sigcontext) = SP_sig(sigcontext); /* original stack pointer, fourth arg for raise_func_trampoline */
|
|
SP_sig(sigcontext) = (ULONG_PTR)stack;
|
|
LR_sig(sigcontext) = PC_sig(sigcontext);
|
|
PC_sig(sigcontext) = (ULONG_PTR)raise_func_trampoline; /* raise_generic_exception; */
|
|
REGn_sig(0, sigcontext) = (ULONG_PTR)&stack->rec; /* first arg for raise_generic_exception */
|
|
REGn_sig(1, sigcontext) = (ULONG_PTR)&stack->context; /* second arg for raise_generic_exception */
|
|
REGn_sig(2, sigcontext) = (ULONG_PTR)pKiUserExceptionDispatcher; /* third arg for raise_func_trampoline */
|
|
REGn_sig(18, sigcontext) = (ULONG_PTR)NtCurrentTeb();
|
|
}
|
|
|
|
/**********************************************************************
|
|
* segv_handler
|
|
*
|
|
* Handler for SIGSEGV and related errors.
|
|
*/
|
|
static void segv_handler( int signal, siginfo_t *info, void *ucontext )
|
|
{
|
|
struct stack_layout *stack;
|
|
ucontext_t *context = ucontext;
|
|
|
|
/* check for page fault inside the thread stack */
|
|
if (signal == SIGSEGV)
|
|
{
|
|
switch (virtual_handle_stack_fault( info->si_addr ))
|
|
{
|
|
case 1: /* handled */
|
|
return;
|
|
case -1: /* overflow */
|
|
stack = setup_exception( context );
|
|
stack->rec.ExceptionCode = EXCEPTION_STACK_OVERFLOW;
|
|
goto done;
|
|
}
|
|
}
|
|
|
|
stack = setup_exception( context );
|
|
if (stack->rec.ExceptionCode == EXCEPTION_STACK_OVERFLOW) goto done;
|
|
|
|
switch(signal)
|
|
{
|
|
case SIGILL: /* Invalid opcode exception */
|
|
stack->rec.ExceptionCode = EXCEPTION_ILLEGAL_INSTRUCTION;
|
|
break;
|
|
case SIGSEGV: /* Segmentation fault */
|
|
stack->rec.NumberParameters = 2;
|
|
stack->rec.ExceptionInformation[0] = (get_fault_esr( context ) & 0x40) != 0;
|
|
stack->rec.ExceptionInformation[1] = (ULONG_PTR)info->si_addr;
|
|
if (!(stack->rec.ExceptionCode = virtual_handle_fault( (void *)stack->rec.ExceptionInformation[1],
|
|
stack->rec.ExceptionInformation[0], FALSE )))
|
|
return;
|
|
break;
|
|
case SIGBUS: /* Alignment check exception */
|
|
stack->rec.ExceptionCode = EXCEPTION_DATATYPE_MISALIGNMENT;
|
|
break;
|
|
default:
|
|
ERR("Got unexpected signal %i\n", signal);
|
|
stack->rec.ExceptionCode = EXCEPTION_ILLEGAL_INSTRUCTION;
|
|
break;
|
|
}
|
|
done:
|
|
setup_raise_exception( context, stack );
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
* trap_handler
|
|
*
|
|
* Handler for SIGTRAP.
|
|
*/
|
|
static void trap_handler( int signal, siginfo_t *info, void *ucontext )
|
|
{
|
|
ucontext_t *context = ucontext;
|
|
struct stack_layout *stack = setup_exception( context );
|
|
|
|
switch (info->si_code)
|
|
{
|
|
case TRAP_TRACE:
|
|
stack->rec.ExceptionCode = EXCEPTION_SINGLE_STEP;
|
|
break;
|
|
case TRAP_BRKPT:
|
|
default:
|
|
stack->rec.ExceptionCode = EXCEPTION_BREAKPOINT;
|
|
stack->context.Pc += 4;
|
|
break;
|
|
}
|
|
setup_raise_exception( context, stack );
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
* fpe_handler
|
|
*
|
|
* Handler for SIGFPE.
|
|
*/
|
|
static void fpe_handler( int signal, siginfo_t *siginfo, void *sigcontext )
|
|
{
|
|
struct stack_layout *stack = setup_exception( sigcontext );
|
|
|
|
switch (siginfo->si_code & 0xffff )
|
|
{
|
|
#ifdef FPE_FLTSUB
|
|
case FPE_FLTSUB:
|
|
stack->rec.ExceptionCode = EXCEPTION_ARRAY_BOUNDS_EXCEEDED;
|
|
break;
|
|
#endif
|
|
#ifdef FPE_INTDIV
|
|
case FPE_INTDIV:
|
|
stack->rec.ExceptionCode = EXCEPTION_INT_DIVIDE_BY_ZERO;
|
|
break;
|
|
#endif
|
|
#ifdef FPE_INTOVF
|
|
case FPE_INTOVF:
|
|
stack->rec.ExceptionCode = EXCEPTION_INT_OVERFLOW;
|
|
break;
|
|
#endif
|
|
#ifdef FPE_FLTDIV
|
|
case FPE_FLTDIV:
|
|
stack->rec.ExceptionCode = EXCEPTION_FLT_DIVIDE_BY_ZERO;
|
|
break;
|
|
#endif
|
|
#ifdef FPE_FLTOVF
|
|
case FPE_FLTOVF:
|
|
stack->rec.ExceptionCode = EXCEPTION_FLT_OVERFLOW;
|
|
break;
|
|
#endif
|
|
#ifdef FPE_FLTUND
|
|
case FPE_FLTUND:
|
|
stack->rec.ExceptionCode = EXCEPTION_FLT_UNDERFLOW;
|
|
break;
|
|
#endif
|
|
#ifdef FPE_FLTRES
|
|
case FPE_FLTRES:
|
|
stack->rec.ExceptionCode = EXCEPTION_FLT_INEXACT_RESULT;
|
|
break;
|
|
#endif
|
|
#ifdef FPE_FLTINV
|
|
case FPE_FLTINV:
|
|
#endif
|
|
default:
|
|
stack->rec.ExceptionCode = EXCEPTION_FLT_INVALID_OPERATION;
|
|
break;
|
|
}
|
|
setup_raise_exception( sigcontext, stack );
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
* int_handler
|
|
*
|
|
* Handler for SIGINT.
|
|
*/
|
|
static void int_handler( int signal, siginfo_t *siginfo, void *sigcontext )
|
|
{
|
|
struct stack_layout *stack = setup_exception( sigcontext );
|
|
|
|
stack->rec.ExceptionCode = CONTROL_C_EXIT;
|
|
setup_raise_exception( sigcontext, stack );
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
* abrt_handler
|
|
*
|
|
* Handler for SIGABRT.
|
|
*/
|
|
static void abrt_handler( int signal, siginfo_t *siginfo, void *sigcontext )
|
|
{
|
|
struct stack_layout *stack = setup_exception( sigcontext );
|
|
|
|
stack->rec.ExceptionCode = EXCEPTION_WINE_ASSERTION;
|
|
stack->rec.ExceptionFlags = EH_NONCONTINUABLE;
|
|
setup_raise_exception( sigcontext, stack );
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
* 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;
|
|
|
|
save_context( &context, sigcontext );
|
|
wait_suspend( &context );
|
|
restore_context( &context, sigcontext );
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
* usr2_handler
|
|
*
|
|
* Handler for SIGUSR2, used to set a thread context.
|
|
*/
|
|
static void usr2_handler( int signal, siginfo_t *siginfo, void *sigcontext )
|
|
{
|
|
CONTEXT *context = InterlockedExchangePointer( (void **)&arm64_thread_data()->context, NULL );
|
|
if (!context) return;
|
|
if ((context->ContextFlags & ~CONTEXT_ARM64) & CONTEXT_FLOATING_POINT)
|
|
restore_fpu( context, sigcontext );
|
|
restore_context( context, sigcontext );
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
* get_thread_ldt_entry
|
|
*/
|
|
NTSTATUS CDECL 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)
|
|
{
|
|
pthread_key_create( &teb_key, NULL );
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
* signal_alloc_thread
|
|
*/
|
|
NTSTATUS signal_alloc_thread( TEB *teb )
|
|
{
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
* signal_free_thread
|
|
*/
|
|
void signal_free_thread( TEB *teb )
|
|
{
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
* signal_init_thread
|
|
*/
|
|
void signal_init_thread( TEB *teb )
|
|
{
|
|
stack_t ss;
|
|
|
|
ss.ss_sp = (char *)teb + teb_size;
|
|
ss.ss_size = signal_stack_size;
|
|
ss.ss_flags = 0;
|
|
if (sigaltstack( &ss, NULL ) == -1) perror( "sigaltstack" );
|
|
|
|
/* Win64/ARM applications expect the TEB pointer to be in the x18 platform register. */
|
|
__asm__ __volatile__( "mov x18, %0" : : "r" (teb) );
|
|
|
|
pthread_setspecific( teb_key, teb );
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
* signal_init_process
|
|
*/
|
|
void signal_init_process(void)
|
|
{
|
|
struct sigaction sig_act;
|
|
|
|
sig_act.sa_mask = server_block_set;
|
|
sig_act.sa_flags = SA_SIGINFO | SA_RESTART | 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 = usr2_handler;
|
|
if (sigaction( SIGUSR2, &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);
|
|
}
|
|
|
|
/***********************************************************************
|
|
* init_thread_context
|
|
*/
|
|
static void init_thread_context( CONTEXT *context, LPTHREAD_START_ROUTINE entry, void *arg, void *relay )
|
|
{
|
|
context->u.s.X0 = (DWORD64)entry;
|
|
context->u.s.X1 = (DWORD64)arg;
|
|
context->u.s.X18 = (DWORD64)NtCurrentTeb();
|
|
context->Sp = (DWORD64)NtCurrentTeb()->Tib.StackBase;
|
|
context->Pc = (DWORD64)relay;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* attach_thread
|
|
*/
|
|
PCONTEXT DECLSPEC_HIDDEN attach_thread( LPTHREAD_START_ROUTINE entry, void *arg,
|
|
BOOL suspend, void *relay )
|
|
{
|
|
CONTEXT *ctx;
|
|
|
|
if (suspend)
|
|
{
|
|
CONTEXT context = { CONTEXT_ALL };
|
|
|
|
init_thread_context( &context, entry, arg, relay );
|
|
wait_suspend( &context );
|
|
ctx = (CONTEXT *)((ULONG_PTR)context.Sp & ~15) - 1;
|
|
*ctx = context;
|
|
}
|
|
else
|
|
{
|
|
ctx = (CONTEXT *)NtCurrentTeb()->Tib.StackBase - 1;
|
|
init_thread_context( ctx, entry, arg, relay );
|
|
}
|
|
pthread_sigmask( SIG_UNBLOCK, &server_block_set, NULL );
|
|
ctx->ContextFlags = CONTEXT_FULL;
|
|
pLdrInitializeThunk( ctx, (void **)&ctx->u.s.X0, 0, 0 );
|
|
return ctx;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* signal_start_thread
|
|
*/
|
|
__ASM_GLOBAL_FUNC( signal_start_thread,
|
|
"stp x29, x30, [sp,#-16]!\n\t"
|
|
"mov x18, x4\n\t" /* teb */
|
|
/* store exit frame */
|
|
"mov x29, sp\n\t"
|
|
"str x29, [x4, #0x300]\n\t" /* arm64_thread_data()->exit_frame */
|
|
/* switch to thread stack */
|
|
"ldr x5, [x4, #8]\n\t" /* teb->Tib.StackBase */
|
|
"sub sp, x5, #0x1000\n\t"
|
|
/* attach dlls */
|
|
"bl " __ASM_NAME("attach_thread") "\n\t"
|
|
"mov sp, x0\n\t"
|
|
/* clear the stack */
|
|
"and x0, x0, #~0xfff\n\t" /* round down to page size */
|
|
"bl " __ASM_NAME("virtual_clear_thread_stack") "\n\t"
|
|
/* switch to the initial context */
|
|
"mov x0, sp\n\t"
|
|
"ldp q0, q1, [x0, #0x110]\n\t" /* context->V[0,1] */
|
|
"ldp q2, q3, [x0, #0x130]\n\t" /* context->V[2,3] */
|
|
"ldp q4, q5, [x0, #0x150]\n\t" /* context->V[4,5] */
|
|
"ldp q6, q7, [x0, #0x170]\n\t" /* context->V[6,7] */
|
|
"ldp q8, q9, [x0, #0x190]\n\t" /* context->V[8,9] */
|
|
"ldp q10, q11, [x0, #0x1b0]\n\t" /* context->V[10,11] */
|
|
"ldp q12, q13, [x0, #0x1d0]\n\t" /* context->V[12,13] */
|
|
"ldp q14, q15, [x0, #0x1f0]\n\t" /* context->V[14,15] */
|
|
"ldp q16, q17, [x0, #0x210]\n\t" /* context->V[16,17] */
|
|
"ldp q18, q19, [x0, #0x230]\n\t" /* context->V[18,19] */
|
|
"ldp q20, q21, [x0, #0x250]\n\t" /* context->V[20,21] */
|
|
"ldp q22, q23, [x0, #0x270]\n\t" /* context->V[22,23] */
|
|
"ldp q24, q25, [x0, #0x290]\n\t" /* context->V[24,25] */
|
|
"ldp q26, q27, [x0, #0x2b0]\n\t" /* context->V[26,27] */
|
|
"ldp q28, q29, [x0, #0x2d0]\n\t" /* context->V[28,29] */
|
|
"ldp q30, q31, [x0, #0x2f0]\n\t" /* context->V[30,31] */
|
|
"ldr w1, [x0, #0x310]\n\t" /* context->Fpcr */
|
|
"msr fpcr, x1\n\t"
|
|
"ldr w1, [x0, #0x314]\n\t" /* context->Fpsr */
|
|
"msr fpsr, x1\n\t"
|
|
"mov x1, #1\n\t"
|
|
"b " __ASM_NAME("NtContinue") )
|
|
|
|
|
|
extern void DECLSPEC_NORETURN call_thread_exit_func( int status, void (*func)(int), TEB *teb );
|
|
__ASM_GLOBAL_FUNC( call_thread_exit_func,
|
|
"stp x29, x30, [sp,#-16]!\n\t"
|
|
"ldr x3, [x2, #0x300]\n\t" /* arm64_thread_data()->exit_frame */
|
|
"str xzr, [x2, #0x300]\n\t"
|
|
"cbz x3, 1f\n\t"
|
|
"mov sp, x3\n"
|
|
"1:\tldp x29, x30, [sp], #16\n\t"
|
|
"br x1" )
|
|
|
|
/***********************************************************************
|
|
* signal_exit_thread
|
|
*/
|
|
void signal_exit_thread( int status, void (*func)(int) )
|
|
{
|
|
call_thread_exit_func( status, func, NtCurrentTeb() );
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
* NtCurrentTeb (NTDLL.@)
|
|
*/
|
|
TEB * WINAPI NtCurrentTeb(void)
|
|
{
|
|
return pthread_getspecific( teb_key );
|
|
}
|
|
|
|
#endif /* __aarch64__ */
|