/* * ARM signal handling routines * * Copyright 2002 Marcus Meissner, SuSE Linux AG * Copyright 2010-2013, 2015 André Hentschel * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA */ #if 0 #pragma makedep unix #endif #ifdef __arm__ #include "config.h" #include "wine/port.h" #include #include #include #include #include #include #ifdef HAVE_UNISTD_H # include #endif #ifdef HAVE_SYS_PARAM_H # include #endif #ifdef HAVE_SYSCALL_H # include #else # ifdef HAVE_SYS_SYSCALL_H # include # endif #endif #ifdef HAVE_SYS_SIGNAL_H # include #endif #ifdef HAVE_SYS_UCONTEXT_H # include #endif #define NONAMELESSUNION #define NONAMELESSSTRUCT #include "ntstatus.h" #define WIN32_NO_STATUS #include "windef.h" #include "winnt.h" #include "winternl.h" #include "wine/exception.h" #include "wine/asm.h" #include "unix_private.h" #include "wine/debug.h" WINE_DEFAULT_DEBUG_CHANNEL(seh); static pthread_key_t teb_key; /*********************************************************************** * signal context platform-specific definitions */ #ifdef linux #if defined(__ANDROID__) && !defined(HAVE_SYS_UCONTEXT_H) typedef struct ucontext { unsigned long uc_flags; struct ucontext *uc_link; stack_t uc_stack; struct sigcontext uc_mcontext; sigset_t uc_sigmask; unsigned long uc_regspace[128] __attribute__((__aligned__(8))); } ucontext_t; #endif /* All Registers access - only for local access */ # define REG_sig(reg_name, context) ((context)->uc_mcontext.reg_name) # define REGn_sig(reg_num, context) ((context)->uc_mcontext.arm_r##reg_num) /* Special Registers access */ # define SP_sig(context) REG_sig(arm_sp, context) /* Stack pointer */ # define LR_sig(context) REG_sig(arm_lr, context) /* Link register */ # define PC_sig(context) REG_sig(arm_pc, context) /* Program counter */ # define CPSR_sig(context) REG_sig(arm_cpsr, context) /* Current State Register */ # define IP_sig(context) REG_sig(arm_ip, context) /* Intra-Procedure-call scratch register */ # define FP_sig(context) REG_sig(arm_fp, context) /* Frame pointer */ /* Exceptions */ # define ERROR_sig(context) REG_sig(error_code, context) # define TRAP_sig(context) REG_sig(trap_no, context) struct extended_ctx { unsigned long magic; unsigned long size; }; struct vfp_sigframe { struct extended_ctx ctx; unsigned long long fpregs[32]; unsigned long fpscr; }; static void *get_extended_sigcontext( const ucontext_t *sigcontext, unsigned int magic ) { struct extended_ctx *ctx = (struct extended_ctx *)sigcontext->uc_regspace; while ((char *)ctx < (char *)(sigcontext + 1) && ctx->magic && ctx->size) { if (ctx->magic == magic) return ctx; ctx = (struct extended_ctx *)((char *)ctx + ctx->size); } return NULL; } static void save_fpu( CONTEXT *context, const ucontext_t *sigcontext ) { struct vfp_sigframe *frame = get_extended_sigcontext( sigcontext, 0x56465001 ); if (!frame) return; memcpy( context->u.D, frame->fpregs, sizeof(context->u.D) ); context->Fpscr = frame->fpscr; } static void restore_fpu( const CONTEXT *context, ucontext_t *sigcontext ) { struct vfp_sigframe *frame = get_extended_sigcontext( sigcontext, 0x56465001 ); if (!frame) return; memcpy( frame->fpregs, context->u.D, sizeof(context->u.D) ); frame->fpscr = context->Fpscr; } #elif defined(__FreeBSD__) /* All Registers access - only for local access */ # define REGn_sig(reg_num, context) ((context)->uc_mcontext.__gregs[reg_num]) /* Special Registers access */ # define SP_sig(context) REGn_sig(_REG_SP, context) /* Stack pointer */ # define LR_sig(context) REGn_sig(_REG_LR, context) /* Link register */ # define PC_sig(context) REGn_sig(_REG_PC, context) /* Program counter */ # define CPSR_sig(context) REGn_sig(_REG_CPSR, context) /* Current State Register */ # define IP_sig(context) REGn_sig(_REG_R12, context) /* Intra-Procedure-call scratch register */ # define FP_sig(context) REGn_sig(_REG_FP, context) /* Frame pointer */ static void save_fpu( CONTEXT *context, const ucontext_t *sigcontext ) { } static void restore_fpu( const CONTEXT *context, ucontext_t *sigcontext ) { } #endif /* linux */ enum arm_trap_code { TRAP_ARM_UNKNOWN = -1, /* Unknown fault (TRAP_sig not defined) */ TRAP_ARM_PRIVINFLT = 6, /* Invalid opcode exception */ TRAP_ARM_PAGEFLT = 14, /* Page fault */ TRAP_ARM_ALIGNFLT = 17, /* Alignment check exception */ }; struct syscall_frame { struct syscall_frame *prev_frame; DWORD cpsr; DWORD r5; DWORD r6; DWORD r7; DWORD r8; DWORD r9; DWORD r10; DWORD r11; DWORD thunk_addr; DWORD r4; DWORD ret_addr; }; struct arm_thread_data { void *exit_frame; /* 1d4 exit frame pointer */ struct syscall_frame *syscall_frame; /* 1d8 frame pointer on syscall entry */ }; C_ASSERT( sizeof(struct arm_thread_data) <= sizeof(((struct ntdll_thread_data *)0)->cpu_data) ); C_ASSERT( offsetof( TEB, GdiTebBatch ) + offsetof( struct arm_thread_data, exit_frame ) == 0x1d4 ); C_ASSERT( offsetof( TEB, GdiTebBatch ) + offsetof( struct arm_thread_data, syscall_frame ) == 0x1d8 ); static inline struct arm_thread_data *arm_thread_data(void) { return (struct arm_thread_data *)ntdll_get_thread_data()->cpu_data; } /*********************************************************************** * unwind_builtin_dll */ NTSTATUS CDECL unwind_builtin_dll( ULONG type, struct _DISPATCHER_CONTEXT *dispatch, CONTEXT *context ) { return STATUS_UNSUCCESSFUL; } /*********************************************************************** * get_trap_code * * Get the trap code for a signal. */ static inline enum arm_trap_code get_trap_code( int signal, const ucontext_t *sigcontext ) { #ifdef TRAP_sig enum arm_trap_code trap = TRAP_sig(sigcontext); if (trap) return trap; #endif switch (signal) { case SIGILL: return TRAP_ARM_PRIVINFLT; case SIGSEGV: return TRAP_ARM_PAGEFLT; case SIGBUS: return TRAP_ARM_ALIGNFLT; default: return TRAP_ARM_UNKNOWN; } } /*********************************************************************** * get_error_code * * Get the error code for a signal. */ static inline WORD get_error_code( const ucontext_t *sigcontext ) { #ifdef ERROR_sig return ERROR_sig(sigcontext); #else return 0; #endif } /*********************************************************************** * save_context * * Set the register values from a sigcontext. */ static void save_context( CONTEXT *context, const ucontext_t *sigcontext ) { #define C(x) context->R##x = REGn_sig(x,sigcontext) /* Save normal registers */ C(0); C(1); C(2); C(3); C(4); C(5); C(6); C(7); C(8); C(9); C(10); #undef C context->ContextFlags = CONTEXT_FULL; context->Sp = SP_sig(sigcontext); /* Stack pointer */ context->Lr = LR_sig(sigcontext); /* Link register */ context->Pc = PC_sig(sigcontext); /* Program Counter */ context->Cpsr = CPSR_sig(sigcontext); /* Current State Register */ context->R11 = FP_sig(sigcontext); /* Frame pointer */ context->R12 = IP_sig(sigcontext); /* Intra-Procedure-call scratch register */ save_fpu( context, sigcontext ); } /*********************************************************************** * restore_context * * Build a sigcontext from the register values. */ static void restore_context( const CONTEXT *context, ucontext_t *sigcontext ) { #define C(x) REGn_sig(x,sigcontext) = context->R##x /* Restore normal registers */ C(0); C(1); C(2); C(3); C(4); C(5); C(6); C(7); C(8); C(9); C(10); #undef C SP_sig(sigcontext) = context->Sp; /* Stack pointer */ LR_sig(sigcontext) = context->Lr; /* Link register */ PC_sig(sigcontext) = context->Pc; /* Program Counter */ CPSR_sig(sigcontext) = context->Cpsr; /* Current State Register */ FP_sig(sigcontext) = context->R11; /* Frame pointer */ IP_sig(sigcontext) = context->R12; /* Intra-Procedure-call scratch register */ restore_fpu( context, sigcontext ); } /*********************************************************************** * set_cpu_context * * Set the new CPU context. */ void DECLSPEC_HIDDEN set_cpu_context( const CONTEXT *context ); __ASM_GLOBAL_FUNC( set_cpu_context, ".arm\n\t" "ldr r2, [r0, #0x44]\n\t" /* context->Cpsr */ "tst r2, #0x20\n\t" /* thumb? */ "ldr r1, [r0, #0x40]\n\t" /* context->Pc */ "orrne r1, r1, #1\n\t" /* Adjust PC according to thumb */ "biceq r1, r1, #1\n\t" /* Adjust PC according to arm */ "msr CPSR_f, r2\n\t" "ldr lr, [r0, #0x3c]\n\t" /* context->Lr */ "ldr sp, [r0, #0x38]\n\t" /* context->Sp */ "push {r1}\n\t" "ldmib r0, {r0-r12}\n\t" /* context->R0..R12 */ "pop {pc}" ) /*********************************************************************** * get_server_context_flags * * Convert CPU-specific flags to generic server flags */ static unsigned int get_server_context_flags( DWORD flags ) { unsigned int ret = 0; flags &= ~CONTEXT_ARM; /* get rid of CPU id */ if (flags & CONTEXT_CONTROL) ret |= SERVER_CTX_CONTROL; if (flags & CONTEXT_INTEGER) ret |= SERVER_CTX_INTEGER; if (flags & CONTEXT_FLOATING_POINT) ret |= SERVER_CTX_FLOATING_POINT; if (flags & CONTEXT_DEBUG_REGISTERS) ret |= SERVER_CTX_DEBUG_REGISTERS; return ret; } /*********************************************************************** * context_to_server * * Convert a register context to the server format. */ NTSTATUS context_to_server( context_t *to, const CONTEXT *from ) { DWORD i, flags = from->ContextFlags & ~CONTEXT_ARM; /* get rid of CPU id */ memset( to, 0, sizeof(*to) ); to->cpu = CPU_ARM; if (flags & CONTEXT_CONTROL) { to->flags |= SERVER_CTX_CONTROL; to->ctl.arm_regs.sp = from->Sp; to->ctl.arm_regs.lr = from->Lr; to->ctl.arm_regs.pc = from->Pc; to->ctl.arm_regs.cpsr = from->Cpsr; } if (flags & CONTEXT_INTEGER) { to->flags |= SERVER_CTX_INTEGER; to->integer.arm_regs.r[0] = from->R0; to->integer.arm_regs.r[1] = from->R1; to->integer.arm_regs.r[2] = from->R2; to->integer.arm_regs.r[3] = from->R3; to->integer.arm_regs.r[4] = from->R4; to->integer.arm_regs.r[5] = from->R5; to->integer.arm_regs.r[6] = from->R6; to->integer.arm_regs.r[7] = from->R7; to->integer.arm_regs.r[8] = from->R8; to->integer.arm_regs.r[9] = from->R9; to->integer.arm_regs.r[10] = from->R10; to->integer.arm_regs.r[11] = from->R11; to->integer.arm_regs.r[12] = from->R12; } if (flags & CONTEXT_FLOATING_POINT) { to->flags |= SERVER_CTX_FLOATING_POINT; for (i = 0; i < 32; i++) to->fp.arm_regs.d[i] = from->u.D[i]; to->fp.arm_regs.fpscr = from->Fpscr; } if (flags & CONTEXT_DEBUG_REGISTERS) { to->flags |= SERVER_CTX_DEBUG_REGISTERS; for (i = 0; i < ARM_MAX_BREAKPOINTS; i++) to->debug.arm_regs.bvr[i] = from->Bvr[i]; for (i = 0; i < ARM_MAX_BREAKPOINTS; i++) to->debug.arm_regs.bcr[i] = from->Bcr[i]; for (i = 0; i < ARM_MAX_WATCHPOINTS; i++) to->debug.arm_regs.wvr[i] = from->Wvr[i]; for (i = 0; i < ARM_MAX_WATCHPOINTS; i++) to->debug.arm_regs.wcr[i] = from->Wcr[i]; } return STATUS_SUCCESS; } /*********************************************************************** * context_from_server * * Convert a register context from the server format. */ NTSTATUS context_from_server( CONTEXT *to, const context_t *from ) { DWORD i; if (from->cpu != CPU_ARM) return STATUS_INVALID_PARAMETER; to->ContextFlags = CONTEXT_ARM; if (from->flags & SERVER_CTX_CONTROL) { to->ContextFlags |= CONTEXT_CONTROL; to->Sp = from->ctl.arm_regs.sp; to->Lr = from->ctl.arm_regs.lr; to->Pc = from->ctl.arm_regs.pc; to->Cpsr = from->ctl.arm_regs.cpsr; } if (from->flags & SERVER_CTX_INTEGER) { to->ContextFlags |= CONTEXT_INTEGER; to->R0 = from->integer.arm_regs.r[0]; to->R1 = from->integer.arm_regs.r[1]; to->R2 = from->integer.arm_regs.r[2]; to->R3 = from->integer.arm_regs.r[3]; to->R4 = from->integer.arm_regs.r[4]; to->R5 = from->integer.arm_regs.r[5]; to->R6 = from->integer.arm_regs.r[6]; to->R7 = from->integer.arm_regs.r[7]; to->R8 = from->integer.arm_regs.r[8]; to->R9 = from->integer.arm_regs.r[9]; to->R10 = from->integer.arm_regs.r[10]; to->R11 = from->integer.arm_regs.r[11]; to->R12 = from->integer.arm_regs.r[12]; } if (from->flags & SERVER_CTX_FLOATING_POINT) { to->ContextFlags |= CONTEXT_FLOATING_POINT; for (i = 0; i < 32; i++) to->u.D[i] = from->fp.arm_regs.d[i]; to->Fpscr = from->fp.arm_regs.fpscr; } if (from->flags & SERVER_CTX_DEBUG_REGISTERS) { to->ContextFlags |= CONTEXT_DEBUG_REGISTERS; for (i = 0; i < ARM_MAX_BREAKPOINTS; i++) to->Bvr[i] = from->debug.arm_regs.bvr[i]; for (i = 0; i < ARM_MAX_BREAKPOINTS; i++) to->Bcr[i] = from->debug.arm_regs.bcr[i]; for (i = 0; i < ARM_MAX_WATCHPOINTS; i++) to->Wvr[i] = from->debug.arm_regs.wvr[i]; for (i = 0; i < ARM_MAX_WATCHPOINTS; i++) to->Wcr[i] = from->debug.arm_regs.wcr[i]; } return STATUS_SUCCESS; } /*********************************************************************** * NtSetContextThread (NTDLL.@) * ZwSetContextThread (NTDLL.@) */ NTSTATUS WINAPI NtSetContextThread( HANDLE handle, const CONTEXT *context ) { NTSTATUS ret; BOOL self; context_t server_context; context_to_server( &server_context, context ); ret = set_thread_context( handle, &server_context, &self ); if (self && ret == STATUS_SUCCESS) set_cpu_context( context ); return ret; } /*********************************************************************** * NtGetContextThread (NTDLL.@) * ZwGetContextThread (NTDLL.@) */ NTSTATUS WINAPI NtGetContextThread( HANDLE handle, CONTEXT *context ) { NTSTATUS ret; struct syscall_frame *frame = arm_thread_data()->syscall_frame; DWORD needed_flags = context->ContextFlags & ~CONTEXT_ARM; BOOL self = (handle == GetCurrentThread()); if (!self) { context_t server_context; unsigned int server_flags = get_server_context_flags( context->ContextFlags ); if ((ret = get_thread_context( handle, &server_context, server_flags, &self ))) return ret; if ((ret = context_from_server( context, &server_context ))) return ret; needed_flags &= ~context->ContextFlags; } if (self) { if (needed_flags & CONTEXT_INTEGER) { context->R0 = 0; context->R1 = 0; context->R2 = 0; context->R3 = 0; context->R4 = frame->r4; context->R5 = frame->r5; context->R6 = frame->r6; context->R7 = frame->r7; context->R8 = frame->r8; context->R9 = frame->r9; context->R10 = frame->r10; context->R11 = frame->r11; context->R12 = 0; context->ContextFlags |= CONTEXT_INTEGER; } if (needed_flags & CONTEXT_CONTROL) { context->Sp = (DWORD)&frame->r4; context->Lr = frame->thunk_addr; context->Pc = frame->thunk_addr; context->Cpsr = frame->cpsr; context->ContextFlags |= CONTEXT_CONTROL; } if (needed_flags & CONTEXT_FLOATING_POINT) FIXME( "floating point not implemented\n" ); } return STATUS_SUCCESS; } extern void raise_func_trampoline_thumb( EXCEPTION_RECORD *rec, CONTEXT *context, void *func ); __ASM_GLOBAL_FUNC( raise_func_trampoline_thumb, ".thumb\n\t" "bx r2\n\t" "bkpt") extern void raise_func_trampoline_arm( EXCEPTION_RECORD *rec, CONTEXT *context, void *func ); __ASM_GLOBAL_FUNC( raise_func_trampoline_arm, ".arm\n\t" "bx r2\n\t" "bkpt") /*********************************************************************** * setup_exception * * Modify the signal context to call the exception raise function. */ static void setup_exception( ucontext_t *sigcontext, EXCEPTION_RECORD *rec ) { struct { CONTEXT context; EXCEPTION_RECORD rec; } *stack; void *stack_ptr = (void *)(SP_sig(sigcontext) & ~3); CONTEXT context; NTSTATUS status; rec->ExceptionAddress = (void *)PC_sig(sigcontext); save_context( &context, sigcontext ); status = send_debug_event( rec, &context, TRUE ); if (status == DBG_CONTINUE || status == DBG_EXCEPTION_HANDLED) { restore_context( &context, sigcontext ); return; } stack = virtual_setup_exception( stack_ptr, sizeof(*stack), rec ); stack->rec = *rec; stack->context = context; /* now modify the sigcontext to return to the raise function */ SP_sig(sigcontext) = (DWORD)stack; if (CPSR_sig(sigcontext) & 0x20) PC_sig(sigcontext) = (DWORD)raise_func_trampoline_thumb; else PC_sig(sigcontext) = (DWORD)raise_func_trampoline_arm; REGn_sig(0, sigcontext) = (DWORD)&stack->rec; /* first arg for KiUserExceptionDispatcher */ REGn_sig(1, sigcontext) = (DWORD)&stack->context; /* second arg for KiUserExceptionDispatcher */ REGn_sig(2, sigcontext) = (DWORD)pKiUserExceptionDispatcher; } void WINAPI call_user_exception_dispatcher( EXCEPTION_RECORD *rec, CONTEXT *context, NTSTATUS (WINAPI *dispatcher)(EXCEPTION_RECORD*,CONTEXT*) ) { dispatcher( rec, context ); } /********************************************************************** * segv_handler * * Handler for SIGSEGV and related errors. */ static void segv_handler( int signal, siginfo_t *siginfo, void *sigcontext ) { EXCEPTION_RECORD rec = { 0 }; ucontext_t *context = sigcontext; switch (get_trap_code(signal, context)) { case TRAP_ARM_PRIVINFLT: /* Invalid opcode exception */ rec.ExceptionCode = EXCEPTION_ILLEGAL_INSTRUCTION; break; case TRAP_ARM_PAGEFLT: /* Page fault */ rec.NumberParameters = 2; rec.ExceptionInformation[0] = (get_error_code(context) & 0x800) != 0; rec.ExceptionInformation[1] = (ULONG_PTR)siginfo->si_addr; rec.ExceptionCode = virtual_handle_fault( siginfo->si_addr, rec.ExceptionInformation[0], (void *)SP_sig(context) ); if (!rec.ExceptionCode) return; break; case TRAP_ARM_ALIGNFLT: /* Alignment check exception */ rec.ExceptionCode = EXCEPTION_DATATYPE_MISALIGNMENT; break; case TRAP_ARM_UNKNOWN: /* Unknown fault code */ rec.ExceptionCode = EXCEPTION_ACCESS_VIOLATION; rec.NumberParameters = 2; rec.ExceptionInformation[0] = 0; rec.ExceptionInformation[1] = 0xffffffff; break; default: ERR("Got unexpected trap %d\n", get_trap_code(signal, context)); rec.ExceptionCode = EXCEPTION_ILLEGAL_INSTRUCTION; break; } setup_exception( context, &rec ); } /********************************************************************** * trap_handler * * Handler for SIGTRAP. */ static void trap_handler( int signal, siginfo_t *siginfo, void *sigcontext ) { EXCEPTION_RECORD rec = { 0 }; switch (siginfo->si_code) { case TRAP_TRACE: rec.ExceptionCode = EXCEPTION_SINGLE_STEP; break; case TRAP_BRKPT: default: rec.ExceptionCode = EXCEPTION_BREAKPOINT; rec.NumberParameters = 1; break; } setup_exception( sigcontext, &rec ); } /********************************************************************** * fpe_handler * * Handler for SIGFPE. */ static void fpe_handler( int signal, siginfo_t *siginfo, void *sigcontext ) { EXCEPTION_RECORD rec = { 0 }; switch (siginfo->si_code & 0xffff ) { #ifdef FPE_FLTSUB case FPE_FLTSUB: rec.ExceptionCode = EXCEPTION_ARRAY_BOUNDS_EXCEEDED; break; #endif #ifdef FPE_INTDIV case FPE_INTDIV: rec.ExceptionCode = EXCEPTION_INT_DIVIDE_BY_ZERO; break; #endif #ifdef FPE_INTOVF case FPE_INTOVF: rec.ExceptionCode = EXCEPTION_INT_OVERFLOW; break; #endif #ifdef FPE_FLTDIV case FPE_FLTDIV: rec.ExceptionCode = EXCEPTION_FLT_DIVIDE_BY_ZERO; break; #endif #ifdef FPE_FLTOVF case FPE_FLTOVF: rec.ExceptionCode = EXCEPTION_FLT_OVERFLOW; break; #endif #ifdef FPE_FLTUND case FPE_FLTUND: rec.ExceptionCode = EXCEPTION_FLT_UNDERFLOW; break; #endif #ifdef FPE_FLTRES case FPE_FLTRES: rec.ExceptionCode = EXCEPTION_FLT_INEXACT_RESULT; break; #endif #ifdef FPE_FLTINV case FPE_FLTINV: #endif default: rec.ExceptionCode = EXCEPTION_FLT_INVALID_OPERATION; break; } setup_exception( sigcontext, &rec ); } /********************************************************************** * int_handler * * Handler for SIGINT. */ static void int_handler( int signal, siginfo_t *siginfo, void *sigcontext ) { EXCEPTION_RECORD rec = { CONTROL_C_EXIT }; setup_exception( sigcontext, &rec ); } /********************************************************************** * abrt_handler * * Handler for SIGABRT. */ static void abrt_handler( int signal, siginfo_t *siginfo, void *sigcontext ) { EXCEPTION_RECORD rec = { EXCEPTION_WINE_ASSERTION, EH_NONCONTINUABLE }; setup_exception( sigcontext, &rec ); } /********************************************************************** * quit_handler * * Handler for SIGQUIT. */ static void quit_handler( int signal, siginfo_t *siginfo, void *sigcontext ) { abort_thread(0); } /********************************************************************** * usr1_handler * * Handler for SIGUSR1, used to signal a thread that it got suspended. */ static void usr1_handler( int signal, siginfo_t *siginfo, void *sigcontext ) { CONTEXT context; save_context( &context, sigcontext ); wait_suspend( &context ); restore_context( &context, sigcontext ); } /********************************************************************** * get_thread_ldt_entry */ NTSTATUS get_thread_ldt_entry( HANDLE handle, void *data, ULONG len, ULONG *ret_len ) { return STATUS_NOT_IMPLEMENTED; } /****************************************************************************** * NtSetLdtEntries (NTDLL.@) * ZwSetLdtEntries (NTDLL.@) */ NTSTATUS WINAPI NtSetLdtEntries( ULONG sel1, LDT_ENTRY entry1, ULONG sel2, LDT_ENTRY entry2 ) { return STATUS_NOT_IMPLEMENTED; } /********************************************************************** * signal_init_threading */ void signal_init_threading(void) { 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 ) { #if defined(__ARM_ARCH_7A__) || defined(__ARM_ARCH_8A__) /* Win32/ARM applications expect the TEB pointer to be in the TPIDRURW register. */ __asm__ __volatile__( "mcr p15, 0, %0, c13, c0, 2" : : "r" (teb) ); #endif 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_RESTART | SA_SIGINFO | SA_ONSTACK; sig_act.sa_sigaction = int_handler; if (sigaction( SIGINT, &sig_act, NULL ) == -1) goto error; sig_act.sa_sigaction = fpe_handler; if (sigaction( SIGFPE, &sig_act, NULL ) == -1) goto error; sig_act.sa_sigaction = abrt_handler; if (sigaction( SIGABRT, &sig_act, NULL ) == -1) goto error; sig_act.sa_sigaction = quit_handler; if (sigaction( SIGQUIT, &sig_act, NULL ) == -1) goto error; sig_act.sa_sigaction = usr1_handler; if (sigaction( SIGUSR1, &sig_act, NULL ) == -1) goto error; sig_act.sa_sigaction = trap_handler; if (sigaction( SIGTRAP, &sig_act, NULL ) == -1) goto error; sig_act.sa_sigaction = segv_handler; if (sigaction( SIGSEGV, &sig_act, NULL ) == -1) goto error; if (sigaction( SIGILL, &sig_act, NULL ) == -1) goto error; if (sigaction( SIGBUS, &sig_act, NULL ) == -1) goto error; return; error: perror("sigaction"); exit(1); } /*********************************************************************** * init_thread_context */ static void init_thread_context( CONTEXT *context, LPTHREAD_START_ROUTINE entry, void *arg, void *relay ) { context->R0 = (DWORD)entry; context->R1 = (DWORD)arg; context->Sp = (DWORD)NtCurrentTeb()->Tib.StackBase; context->Pc = (DWORD)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->R0, 0, 0 ); return ctx; } /*********************************************************************** * signal_start_thread */ __ASM_GLOBAL_FUNC( signal_start_thread, ".arm\n\t" "push {r4-r12,lr}\n\t" /* store exit frame */ "ldr r4, [sp, #40]\n\t" /* teb */ "str sp, [r4, #0x1d4]\n\t" /* teb->GdiTebBatch */ /* switch to thread stack */ "ldr r4, [r4, #4]\n\t" /* teb->Tib.StackBase */ "sub sp, r4, #0x1000\n\t" /* attach dlls */ "bl " __ASM_NAME("attach_thread") "\n\t" "mov sp, r0\n\t" /* clear the stack */ "and r0, #~0xff0\n\t" /* round down to page size */ "bl " __ASM_NAME("virtual_clear_thread_stack") "\n\t" /* switch to the initial context */ "mov r1, #1\n\t" "mov r0, sp\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, ".arm\n\t" "ldr r3, [r2, #0x1d4]\n\t" /* teb->GdiTebBatch */ "mov ip, #0\n\t" "str ip, [r2, #0x1d4]\n\t" "cmp r3, ip\n\t" "movne sp, r3\n\t" "blx r1" ) /*********************************************************************** * 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 /* __arm__ */