November 2023 - Wine-Commits

Alexandre Julliard : ntdll: Get rid of the thread exit frame on x86-64.
by Alexandre Julliard Nov. 22, 2023

Nov. 22, 2023

Module: wine Branch: master Commit: f6b45674076d50b3c44b0e6873471f532f64d4c0 URL: https://gitlab.winehq.org/wine/wine/-/commit/f6b45674076d50b3c44b0e6873471f… Author: Alexandre Julliard <julliard(a)winehq.org> Date: Mon Nov 20 14:03:48 2023 +0100 ntdll: Get rid of the thread exit frame on x86-64. --- dlls/ntdll/unix/signal_x86_64.c | 40 +++++++++++----------------------------- 1 file changed, 11 insertions(+), 29 deletions(-) diff --git a/dlls/ntdll/unix/signal_x86_64.c b/dlls/ntdll/unix/signal_x86_64.c index 36b02b49f49..b7bed4e3702 100644 --- a/dlls/ntdll/unix/signal_x86_64.c +++ b/dlls/ntdll/unix/signal_x86_64.c @@ -418,16 +418,15 @@ struct amd64_thread_data DWORD_PTR dr3; /* 0308 */ DWORD_PTR dr6; /* 0310 */ DWORD_PTR dr7; /* 0318 */ - void *exit_frame; /* 0320 exit frame pointer */ + void *pthread_teb; /* 0320 thread data for pthread */ struct syscall_frame *syscall_frame; /* 0328 syscall frame pointer */ - void *pthread_teb; /* 0330 thread data for pthread */ - DWORD fs; /* 0338 WOW TEB selector */ + DWORD fs; /* 0330 WOW TEB selector */ }; C_ASSERT( sizeof(struct amd64_thread_data) <= sizeof(((struct ntdll_thread_data *)0)->cpu_data) ); -C_ASSERT( offsetof( TEB, GdiTebBatch ) + offsetof( struct amd64_thread_data, exit_frame ) == 0x320 ); +C_ASSERT( offsetof( TEB, GdiTebBatch ) + offsetof( struct amd64_thread_data, pthread_teb ) == 0x320 ); C_ASSERT( offsetof( TEB, GdiTebBatch ) + offsetof( struct amd64_thread_data, syscall_frame ) == 0x328 ); -C_ASSERT( offsetof( TEB, GdiTebBatch ) + offsetof( struct amd64_thread_data, pthread_teb ) == 0x330 ); +C_ASSERT( offsetof( TEB, GdiTebBatch ) + offsetof( struct amd64_thread_data, fs ) == 0x330 ); static inline struct amd64_thread_data *amd64_thread_data(void) { @@ -1586,7 +1585,7 @@ __ASM_GLOBAL_FUNC( call_user_mode_callback, #ifdef __linux__ "testl $12,%r14d\n\t" /* SYSCALL_HAVE_PTHREAD_TEB | SYSCALL_HAVE_WRFSGSBASE */ "jz 1f\n\t" - "movw 0x338(%r11),%fs\n" /* amd64_thread_data()->fs */ + "movw 0x330(%r11),%fs\n" /* amd64_thread_data()->fs */ "1:\n\t" #endif "movq %rdi,%rcx\n\t" /* id */ @@ -2561,8 +2560,6 @@ __ASM_GLOBAL_FUNC( signal_start_thread, "movq %r15,-0x28(%rbp)\n\t" __ASM_CFI(".cfi_rel_offset %r15,-0x28\n\t") "leaq 0x10(%rbp),%r9\n\t" /* syscall_cfa */ - /* store exit frame */ - "movq %rsp,0x320(%rcx)\n\t" /* amd64_thread_data()->exit_frame */ /* set syscall frame */ "movq 0x328(%rcx),%r8\n\t" /* amd64_thread_data()->syscall_frame */ "orq %r8,%r8\n\t" @@ -2578,23 +2575,8 @@ __ASM_GLOBAL_FUNC( signal_start_thread, /*********************************************************************** * signal_exit_thread */ -__ASM_GLOBAL_FUNC( signal_exit_thread, - /* fetch exit frame */ - "xorl %ecx,%ecx\n\t" - "xchgq %rcx,0x320(%rdx)\n\t" /* amd64_thread_data()->exit_frame */ - "testq %rcx,%rcx\n\t" - "jnz 1f\n\t" - "jmp *%rsi\n" - /* switch to exit frame stack */ - "1:\tmovq %rcx,%rsp\n\t" - __ASM_CFI(".cfi_adjust_cfa_offset 56\n\t") - __ASM_CFI(".cfi_rel_offset %rbp,48\n\t") - __ASM_CFI(".cfi_rel_offset %rbx,40\n\t") - __ASM_CFI(".cfi_rel_offset %r12,32\n\t") - __ASM_CFI(".cfi_rel_offset %r13,24\n\t") - __ASM_CFI(".cfi_rel_offset %r14,16\n\t") - __ASM_CFI(".cfi_rel_offset %r15,8\n\t") - "call *%rsi" ) +__ASM_GLOBAL_FUNC( signal_exit_thread, "jmp *%rsi" ) + /*********************************************************************** * __wine_syscall_dispatcher @@ -2677,7 +2659,7 @@ __ASM_GLOBAL_FUNC( __wine_syscall_dispatcher, #ifdef __linux__ "testl $12,%r14d\n\t" /* SYSCALL_HAVE_PTHREAD_TEB | SYSCALL_HAVE_WRFSGSBASE */ "jz 2f\n\t" - "movq %gs:0x330,%rsi\n\t" /* amd64_thread_data()->pthread_teb */ + "movq %gs:0x320,%rsi\n\t" /* amd64_thread_data()->pthread_teb */ "testl $8,%r14d\n\t" /* SYSCALL_HAVE_WRFSGSBASE */ "jz 1f\n\t" "wrfsbase %rsi\n\t" @@ -2738,7 +2720,7 @@ __ASM_GLOBAL_FUNC( __wine_syscall_dispatcher, #ifdef __linux__ "testl $12,%r14d\n\t" /* SYSCALL_HAVE_PTHREAD_TEB | SYSCALL_HAVE_WRFSGSBASE */ "jz 1f\n\t" - "movw %gs:0x338,%fs\n" /* amd64_thread_data()->fs */ + "movw %gs:0x330,%fs\n" /* amd64_thread_data()->fs */ "1:\n\t" #endif "testl $0x48,%edx\n\t" /* CONTEXT_FLOATING_POINT | CONTEXT_XSTATE */ @@ -2880,7 +2862,7 @@ __ASM_GLOBAL_FUNC( __wine_unix_call_dispatcher, #ifdef __linux__ "testl $12,%r14d\n\t" /* SYSCALL_HAVE_PTHREAD_TEB | SYSCALL_HAVE_WRFSGSBASE */ "jz 2f\n\t" - "movq %gs:0x330,%rsi\n\t" /* amd64_thread_data()->pthread_teb */ + "movq %gs:0x320,%rsi\n\t" /* amd64_thread_data()->pthread_teb */ "testl $8,%r14d\n\t" /* SYSCALL_HAVE_WRFSGSBASE */ "jz 1f\n\t" "wrfsbase %rsi\n\t" @@ -2923,7 +2905,7 @@ __ASM_GLOBAL_FUNC( __wine_unix_call_dispatcher, #ifdef __linux__ "testl $12,%r14d\n\t" /* SYSCALL_HAVE_PTHREAD_TEB | SYSCALL_HAVE_WRFSGSBASE */ "jz 1f\n\t" - "movw %gs:0x338,%fs\n" /* amd64_thread_data()->fs */ + "movw %gs:0x330,%fs\n" /* amd64_thread_data()->fs */ "1:\n\t" #endif "movq 0x60(%rcx),%r14\n\t"

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Alexandre Julliard : ntdll: Switch to the kernel stack to abort a thread on ARM.
by Alexandre Julliard Nov. 22, 2023

Nov. 22, 2023

Module: wine Branch: master Commit: 3e421c6675a2cfa45a5a641585b235b5cd1ecf6d URL: https://gitlab.winehq.org/wine/wine/-/commit/3e421c6675a2cfa45a5a641585b235… Author: Alexandre Julliard <julliard(a)winehq.org> Date: Mon Nov 20 14:39:22 2023 +0100 ntdll: Switch to the kernel stack to abort a thread on ARM. --- dlls/ntdll/unix/signal_arm.c | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/dlls/ntdll/unix/signal_arm.c b/dlls/ntdll/unix/signal_arm.c index b6f4636e3eb..a5ab2473ade 100644 --- a/dlls/ntdll/unix/signal_arm.c +++ b/dlls/ntdll/unix/signal_arm.c @@ -1219,6 +1219,30 @@ __ASM_GLOBAL_FUNC( user_mode_callback_return, "pop {r4-r12,pc}" ) +/*********************************************************************** + * user_mode_abort_thread + */ +extern void DECLSPEC_NORETURN user_mode_abort_thread( NTSTATUS status, struct syscall_frame *frame ); +__ASM_GLOBAL_FUNC( user_mode_abort_thread, + __ASM_EHABI(".cantunwind\n\t") + "ldr r7, [r1, #0x28]\n\t" /* frame->syscall_cfa */ + "sub r7, r7, #0x28\n\t" + /* switch to kernel stack */ + "mov sp, r7\n\t" + __ASM_CFI(".cfi_def_cfa 7,0x28\n\t") + __ASM_CFI(".cfi_offset r4,-0x28\n\t") + __ASM_CFI(".cfi_offset r5,-0x24\n\t") + __ASM_CFI(".cfi_offset r6,-0x20\n\t") + __ASM_CFI(".cfi_offset r7,-0x1c\n\t") + __ASM_CFI(".cfi_offset r8,-0x18\n\t") + __ASM_CFI(".cfi_offset r9,-0x14\n\t") + __ASM_CFI(".cfi_offset r10,-0x10\n\t") + __ASM_CFI(".cfi_offset r11,-0x0c\n\t") + __ASM_CFI(".cfi_offset r12,-0x08\n\t") + __ASM_CFI(".cfi_offset lr,-0x04\n\t") + "bl " __ASM_NAME("abort_thread") ) + + /*********************************************************************** * KeUserModeCallback */ @@ -1472,6 +1496,7 @@ static void abrt_handler( int signal, siginfo_t *siginfo, void *sigcontext ) */ static void quit_handler( int signal, siginfo_t *siginfo, void *sigcontext ) { + if (!is_inside_syscall( sigcontext )) user_mode_abort_thread( 0, arm_thread_data()->syscall_frame ); abort_thread(0); }

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Alexandre Julliard : ntdll: Switch to the kernel stack to abort a thread on x86-64.
by Alexandre Julliard Nov. 22, 2023

Nov. 22, 2023

Module: wine Branch: master Commit: 3c53d89e6c1f2c7fe16a06a3bb9eec241efba2b9 URL: https://gitlab.winehq.org/wine/wine/-/commit/3c53d89e6c1f2c7fe16a06a3bb9eec… Author: Alexandre Julliard <julliard(a)winehq.org> Date: Mon Nov 20 12:52:43 2023 +0100 ntdll: Switch to the kernel stack to abort a thread on x86-64. --- dlls/ntdll/unix/signal_x86_64.c | 28 +++++++++++++++++++++++++--- 1 file changed, 25 insertions(+), 3 deletions(-) diff --git a/dlls/ntdll/unix/signal_x86_64.c b/dlls/ntdll/unix/signal_x86_64.c index e6d2e447e52..36b02b49f49 100644 --- a/dlls/ntdll/unix/signal_x86_64.c +++ b/dlls/ntdll/unix/signal_x86_64.c @@ -1641,6 +1641,26 @@ __ASM_GLOBAL_FUNC( user_mode_callback_return, "retq" ) +/*********************************************************************** + * user_mode_abort_thread + */ +extern void DECLSPEC_NORETURN user_mode_abort_thread( NTSTATUS status, struct syscall_frame *frame ); +__ASM_GLOBAL_FUNC( user_mode_abort_thread, + "movq 0xa8(%rsi),%rbp\n\t" /* frame->syscall_cfa */ + "subq $0x10,%rbp\n\t" + /* switch to kernel stack */ + "movq %rbp,%rsp\n\t" + __ASM_CFI(".cfi_def_cfa %rbp,0x10\n\t") + __ASM_CFI(".cfi_offset %rip,-0x08\n\t") + __ASM_CFI(".cfi_offset %rbp,-0x10\n\t") + __ASM_CFI(".cfi_offset %rbx,-0x18\n\t") + __ASM_CFI(".cfi_offset %r12,-0x20\n\t") + __ASM_CFI(".cfi_offset %r13,-0x28\n\t") + __ASM_CFI(".cfi_offset %r14,-0x30\n\t") + __ASM_CFI(".cfi_offset %r15,-0x38\n\t") + "call " __ASM_NAME("abort_thread") ) + + /*********************************************************************** * KeUserModeCallback */ @@ -2098,10 +2118,12 @@ static void abrt_handler( int signal, siginfo_t *siginfo, void *sigcontext ) * * Handler for SIGQUIT. */ -static void quit_handler( int signal, siginfo_t *siginfo, void *ucontext ) +static void quit_handler( int signal, siginfo_t *siginfo, void *sigcontext ) { - init_handler( ucontext ); - abort_thread(0); + ucontext_t *ucontext = init_handler( sigcontext ); + + if (!is_inside_syscall( ucontext )) user_mode_abort_thread( 0, amd64_thread_data()->syscall_frame ); + abort_thread( 0 ); }

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Alexandre Julliard : ntdll: Connect syscall frames across user callbacks on ARM.
by Alexandre Julliard Nov. 22, 2023

Nov. 22, 2023

Module: wine Branch: master Commit: d80a662bc1ff4cc63e442156eba07052332b8757 URL: https://gitlab.winehq.org/wine/wine/-/commit/d80a662bc1ff4cc63e442156eba070… Author: Alexandre Julliard <julliard(a)winehq.org> Date: Tue Nov 21 15:49:44 2023 +0100 ntdll: Connect syscall frames across user callbacks on ARM. --- dlls/ntdll/unix/dwarf.h | 36 +++++++++++++++++++++++++++++++++++ dlls/ntdll/unix/signal_arm.c | 45 +++++++++++++++++++++++++++++++++++++++----- 2 files changed, 76 insertions(+), 5 deletions(-) diff --git a/dlls/ntdll/unix/dwarf.h b/dlls/ntdll/unix/dwarf.h index ef9eabb1d53..8deb845ca13 100644 --- a/dlls/ntdll/unix/dwarf.h +++ b/dlls/ntdll/unix/dwarf.h @@ -1048,6 +1048,42 @@ static void apply_frame_state( CONTEXT *context, struct frame_state *state, #define DW_REG_r15 0x0f #define DW_REG_rip 0x10 +#elif defined(__arm__) + +#define DW_OP_r0 DW_OP_breg0 +#define DW_OP_r1 DW_OP_breg1 +#define DW_OP_r2 DW_OP_breg2 +#define DW_OP_r3 DW_OP_breg3 +#define DW_OP_r4 DW_OP_breg4 +#define DW_OP_r5 DW_OP_breg5 +#define DW_OP_r6 DW_OP_breg6 +#define DW_OP_r7 DW_OP_breg7 +#define DW_OP_r8 DW_OP_breg8 +#define DW_OP_r9 DW_OP_breg9 +#define DW_OP_r10 DW_OP_breg10 +#define DW_OP_r11 DW_OP_breg11 +#define DW_OP_r12 DW_OP_breg12 +#define DW_OP_sp DW_OP_breg13 +#define DW_OP_lr DW_OP_breg14 +#define DW_OP_pc DW_OP_breg15 + +#define DW_REG_r0 0 +#define DW_REG_r1 1 +#define DW_REG_r2 2 +#define DW_REG_r3 3 +#define DW_REG_r4 4 +#define DW_REG_r5 5 +#define DW_REG_r6 6 +#define DW_REG_r7 7 +#define DW_REG_r8 8 +#define DW_REG_r9 9 +#define DW_REG_r10 10 +#define DW_REG_r11 11 +#define DW_REG_r12 12 +#define DW_REG_sp 13 +#define DW_REG_lr 14 +#define DW_REG_pc 15 + #elif defined(__aarch64__) #define DW_OP_x19 DW_OP_breg19 diff --git a/dlls/ntdll/unix/signal_arm.c b/dlls/ntdll/unix/signal_arm.c index 1f0a4fd84b1..b6f4636e3eb 100644 --- a/dlls/ntdll/unix/signal_arm.c +++ b/dlls/ntdll/unix/signal_arm.c @@ -70,6 +70,8 @@ WINE_DEFAULT_DEBUG_CHANNEL(seh); +#define NTDLL_DWARF_H_NO_UNWINDER +#include "dwarf.h" /*********************************************************************** * signal context platform-specific definitions @@ -1023,8 +1025,8 @@ __ASM_GLOBAL_FUNC( raise_func_trampoline, "push {r12,lr}\n\t" /* (Padding +) Pc in the original frame */ "ldr r3, [r1, #0x38]\n\t" /* context->Sp */ "push {r3}\n\t" /* Original Sp */ - __ASM_CFI(".cfi_escape 0x0f,0x03,0x7D,0x04,0x06\n\t") /* CFA, DW_OP_breg13 + 0x04, DW_OP_deref */ - __ASM_CFI(".cfi_escape 0x10,0x0e,0x02,0x7D,0x0c\n\t") /* LR, DW_OP_breg13 + 0x0c */ + __ASM_CFI_CFA_IS_AT1(sp, 0x04) + __ASM_CFI_REG_IS_AT1(lr, sp, 0x0c) __ASM_EHABI(".save {sp}\n\t") __ASM_EHABI(".pad #-12\n\t") __ASM_EHABI(".save {pc}\n\t") @@ -1158,10 +1160,21 @@ extern NTSTATUS call_user_mode_callback( ULONG id, void *args, ULONG len, void * ULONG *ret_len, void *func, TEB *teb ); __ASM_GLOBAL_FUNC( call_user_mode_callback, "push {r4-r12,lr}\n\t" + "add r7, sp, #0x28\n\t" /* syscall_cfa */ + __ASM_CFI(".cfi_def_cfa 7,0\n\t") + __ASM_CFI(".cfi_offset r4,-0x28\n\t") + __ASM_CFI(".cfi_offset r5,-0x24\n\t") + __ASM_CFI(".cfi_offset r6,-0x20\n\t") + __ASM_CFI(".cfi_offset r7,-0x1c\n\t") + __ASM_CFI(".cfi_offset r8,-0x18\n\t") + __ASM_CFI(".cfi_offset r9,-0x14\n\t") + __ASM_CFI(".cfi_offset r10,-0x10\n\t") + __ASM_CFI(".cfi_offset r11,-0x0c\n\t") + __ASM_CFI(".cfi_offset r12,-0x08\n\t") + __ASM_CFI(".cfi_offset lr,-0x04\n\t") "ldr ip, [sp, #0x2c]\n\t" /* func */ "ldr r4, [sp, #0x30]\n\t" /* teb */ "ldr r5, [r4]\n\t" /* teb->Tib.ExceptionList */ - "add r7, sp, #0x28\n\t" /* syscall_cfa */ "push {r3, r5}\n\t" #ifndef __SOFTFP__ "sub sp, sp, #0x90\n\t" @@ -1666,9 +1679,20 @@ __ASM_GLOBAL_FUNC( __wine_syscall_dispatcher, "vstm r0, {d0-d15}\n\t" #endif "mov r6, sp\n\t" + "mov r8, r1\n\t" /* switch to kernel stack */ "mov sp, r1\n\t" - "mov r8, r1\n\t" + __ASM_CFI_CFA_IS_AT2(r8, 0xd0, 0x00) /* frame->syscall_cfa */ + __ASM_CFI(".cfi_offset r4,-0x28\n\t") + __ASM_CFI(".cfi_offset r5,-0x24\n\t") + __ASM_CFI(".cfi_offset r6,-0x20\n\t") + __ASM_CFI(".cfi_offset r7,-0x1c\n\t") + __ASM_CFI(".cfi_offset r8,-0x18\n\t") + __ASM_CFI(".cfi_offset r9,-0x14\n\t") + __ASM_CFI(".cfi_offset r10,-0x10\n\t") + __ASM_CFI(".cfi_offset r11,-0x0c\n\t") + __ASM_CFI(".cfi_offset r12,-0x08\n\t") + __ASM_CFI(".cfi_offset lr,-0x04\n\t") "ldr r5, [r2, #0x1dc]\n\t" /* arm_thread_data()->syscall_table */ "ubfx r4, ip, #12, #2\n\t" /* syscall table number */ "bfc ip, #12, #20\n\t" /* syscall number */ @@ -1746,11 +1770,22 @@ __ASM_GLOBAL_FUNC( __wine_unix_call_dispatcher, "vstm r4, {d0-d15}\n\t" #endif "ldr ip, [r0, r2, lsl #2]\n\t" + "mov r8, r1\n\t" /* switch to kernel stack */ "mov sp, r1\n\t" + __ASM_CFI_CFA_IS_AT2(r8, 0xd0, 0x00) /* frame->syscall_cfa */ + __ASM_CFI(".cfi_offset r4,-0x28\n\t") + __ASM_CFI(".cfi_offset r5,-0x24\n\t") + __ASM_CFI(".cfi_offset r6,-0x20\n\t") + __ASM_CFI(".cfi_offset r7,-0x1c\n\t") + __ASM_CFI(".cfi_offset r8,-0x18\n\t") + __ASM_CFI(".cfi_offset r9,-0x14\n\t") + __ASM_CFI(".cfi_offset r10,-0x10\n\t") + __ASM_CFI(".cfi_offset r11,-0x0c\n\t") + __ASM_CFI(".cfi_offset r12,-0x08\n\t") + __ASM_CFI(".cfi_offset lr,-0x04\n\t") "mov r0, r3\n\t" /* args */ "blx ip\n" - "mov r8, sp\n\t" "ldr r1, [r8, #0x44]\n\t" /* frame->restore_flags */ "cbnz r1, 1f\n\t" /* switch to user stack */

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Alexandre Julliard : ntdll: Add a syscall_cfa member to the ARM syscall frame.
by Alexandre Julliard Nov. 22, 2023

Nov. 22, 2023

Module: wine Branch: master Commit: 0d329384d8fad00cbb0a0e1c3f9540d8ee03555e URL: https://gitlab.winehq.org/wine/wine/-/commit/0d329384d8fad00cbb0a0e1c3f9540… Author: Alexandre Julliard <julliard(a)winehq.org> Date: Mon Nov 20 11:18:40 2023 +0100 ntdll: Add a syscall_cfa member to the ARM syscall frame. --- dlls/ntdll/unix/signal_arm.c | 15 +++++++++------ 1 file changed, 9 insertions(+), 6 deletions(-) diff --git a/dlls/ntdll/unix/signal_arm.c b/dlls/ntdll/unix/signal_arm.c index 44d72fb5548..1f0a4fd84b1 100644 --- a/dlls/ntdll/unix/signal_arm.c +++ b/dlls/ntdll/unix/signal_arm.c @@ -194,7 +194,7 @@ struct syscall_frame UINT restore_flags; /* 044 */ UINT fpscr; /* 048 */ struct syscall_frame *prev_frame; /* 04c */ - void *unused; /* 050 */ + void *syscall_cfa; /* 050 */ UINT align[3]; /* 054 */ ULONGLONG d[32]; /* 060 */ }; @@ -1161,6 +1161,7 @@ __ASM_GLOBAL_FUNC( call_user_mode_callback, "ldr ip, [sp, #0x2c]\n\t" /* func */ "ldr r4, [sp, #0x30]\n\t" /* teb */ "ldr r5, [r4]\n\t" /* teb->Tib.ExceptionList */ + "add r7, sp, #0x28\n\t" /* syscall_cfa */ "push {r3, r5}\n\t" #ifndef __SOFTFP__ "sub sp, sp, #0x90\n\t" @@ -1172,6 +1173,7 @@ __ASM_GLOBAL_FUNC( call_user_mode_callback, "sub sp, sp, #0x160\n\t" /* sizeof(struct syscall_frame) + registers */ "ldr r5, [r4, #0x1d8]\n\t" /* arm_thread_data()->syscall_frame */ "str r5, [sp, #0x4c]\n\t" /* frame->prev_frame */ + "str r7, [sp, #0x50]\n\t" /* frame->syscall_cfa */ "str sp, [r4, #0x1d8]\n\t" /* arm_thread_data()->syscall_frame */ /* switch to user stack */ "mov sp, r1\n\t" @@ -1571,14 +1573,12 @@ void signal_init_process(void) /*********************************************************************** * call_init_thunk */ -void call_init_thunk( LPTHREAD_START_ROUTINE entry, void *arg, BOOL suspend, TEB *teb ) +void call_init_thunk( LPTHREAD_START_ROUTINE entry, void *arg, BOOL suspend, TEB *teb, + struct syscall_frame *frame, void *syscall_cfa ) { struct arm_thread_data *thread_data = (struct arm_thread_data *)&teb->GdiTebBatch; - struct syscall_frame *frame = thread_data->syscall_frame; CONTEXT *ctx, context = { CONTEXT_ALL }; - __asm__ __volatile__( "mcr p15, 0, %0, c13, c0, 2" : : "r" (teb) ); - thread_data->syscall_table = KeServiceDescriptorTable; context.R0 = (DWORD)entry; @@ -1599,8 +1599,8 @@ void call_init_thunk( LPTHREAD_START_ROUTINE entry, void *arg, BOOL suspend, TEB frame->sp = (DWORD)ctx; frame->pc = (DWORD)pLdrInitializeThunk; frame->r0 = (DWORD)ctx; - frame->prev_frame = NULL; frame->restore_flags |= CONTEXT_INTEGER; + frame->syscall_cfa = syscall_cfa; pthread_sigmask( SIG_UNBLOCK, &server_block_set, NULL ); __wine_syscall_dispatcher_return( frame, 0 ); @@ -1613,6 +1613,8 @@ void call_init_thunk( LPTHREAD_START_ROUTINE entry, void *arg, BOOL suspend, TEB __ASM_GLOBAL_FUNC( signal_start_thread, __ASM_EHABI(".cantunwind\n\t") "push {r4-r12,lr}\n\t" + "add r7, sp, #0x28\n\t" /* syscall_cfa */ + "mcr p15, 0, r3, c13, c0, 2\n\t" /* set teb register */ /* store exit frame */ "str sp, [r3, #0x1d4]\n\t" /* arm_thread_data()->exit_frame */ /* set syscall frame */ @@ -1622,6 +1624,7 @@ __ASM_GLOBAL_FUNC( signal_start_thread, "str r6, [r3, #0x1d8]\n\t" /* arm_thread_data()->syscall_frame */ /* switch to kernel stack */ "1:\tmov sp, r6\n\t" + "push {r6,r7}\n\t" "bl " __ASM_NAME("call_init_thunk") )

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Rémi Bernon : ntdll: Add a syscall_cfa member to the x86_64 syscall frame.
by Alexandre Julliard Nov. 22, 2023

Nov. 22, 2023

Module: wine Branch: master Commit: df181df8ee5930f19327324593ecd54b3cc7fc26 URL: https://gitlab.winehq.org/wine/wine/-/commit/df181df8ee5930f19327324593ecd5… Author: Rémi Bernon <rbernon(a)codeweavers.com> Date: Mon Nov 6 16:22:31 2023 +0100 ntdll: Add a syscall_cfa member to the x86_64 syscall frame. Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=52213 Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=54346 --- dlls/ntdll/unix/signal_x86_64.c | 58 +++++++++++++++++++++++------------------ 1 file changed, 32 insertions(+), 26 deletions(-) diff --git a/dlls/ntdll/unix/signal_x86_64.c b/dlls/ntdll/unix/signal_x86_64.c index 54125501ffb..e65b123fb7f 100644 --- a/dlls/ntdll/unix/signal_x86_64.c +++ b/dlls/ntdll/unix/signal_x86_64.c @@ -400,7 +400,7 @@ struct syscall_frame ULONG64 ss; /* 0090 */ ULONG64 rbp; /* 0098 */ struct syscall_frame *prev_frame; /* 00a0 */ - void *unused; /* 00a8 */ + void *syscall_cfa; /* 00a8 */ DWORD syscall_flags; /* 00b0 */ DWORD restore_flags; /* 00b4 */ DWORD align[2]; /* 00b8 */ @@ -1572,9 +1572,10 @@ __ASM_GLOBAL_FUNC( call_user_mode_callback, "movq %rcx,-0x38(%rbp)\n\t" /* ret_ptr */ "movq %r8,-0x40(%rbp)\n\t" /* ret_len */ "mov 0x10(%rbp),%r11\n\t" /* teb */ - "subq $0x410,%rsp\n\t" /* sizeof(struct syscall_frame) + ebp + exception */ + "subq $0x408,%rsp\n\t" /* sizeof(struct syscall_frame) + exception */ "andq $~63,%rsp\n\t" - "movq %rbp,0x400(%rsp)\n\t" + "leaq 0x10(%rbp),%rax\n\t" + "movq %rax,0xa8(%rsp)\n\t" /* frame->syscall_cfa */ "movq 0x328(%r11),%r10\n\t" /* amd64_thread_data()->syscall_frame */ "movq (%r11),%rax\n\t" /* NtCurrentTeb()->Tib.ExceptionList */ "movq %rax,0x408(%rsp)\n\t" @@ -1606,7 +1607,8 @@ __ASM_GLOBAL_FUNC( user_mode_callback_return, "movq 0x328(%rcx),%r10\n\t" /* amd64_thread_data()->syscall_frame */ "movq 0xa0(%r10),%r11\n\t" /* frame->prev_frame */ "movq %r11,0x328(%rcx)\n\t" /* amd64_thread_data()->syscall_frame = prev_frame */ - "movq 0x400(%r10),%rbp\n\t" /* call_user_mode_callback rbp */ + "movq 0xa8(%r10),%rbp\n\t" /* frame->syscall_cfa */ + "subq $0x10,%rbp\n\t" __ASM_CFI(".cfi_def_cfa_register %rbp\n\t") __ASM_CFI(".cfi_rel_offset %rbx,-0x08\n\t") __ASM_CFI(".cfi_rel_offset %r12,-0x10\n\t") @@ -2433,10 +2435,10 @@ void signal_init_process(void) /*********************************************************************** * call_init_thunk */ -void call_init_thunk( LPTHREAD_START_ROUTINE entry, void *arg, BOOL suspend, TEB *teb ) +void call_init_thunk( LPTHREAD_START_ROUTINE entry, void *arg, BOOL suspend, TEB *teb, + struct syscall_frame *frame, void *syscall_cfa ) { struct amd64_thread_data *thread_data = (struct amd64_thread_data *)&teb->GdiTebBatch; - struct syscall_frame *frame = thread_data->syscall_frame; CONTEXT *ctx, context = { 0 }; I386_CONTEXT *wow_context; @@ -2509,6 +2511,7 @@ void call_init_thunk( LPTHREAD_START_ROUTINE entry, void *arg, BOOL suspend, TEB frame->prev_frame = NULL; frame->restore_flags |= CONTEXT_INTEGER; frame->syscall_flags = syscall_flags; + frame->syscall_cfa = syscall_cfa; pthread_sigmask( SIG_UNBLOCK, &server_block_set, NULL ); __wine_syscall_dispatcher_return( frame, 0 ); @@ -2519,31 +2522,34 @@ void call_init_thunk( LPTHREAD_START_ROUTINE entry, void *arg, BOOL suspend, TEB * signal_start_thread */ __ASM_GLOBAL_FUNC( signal_start_thread, - "subq $56,%rsp\n\t" - __ASM_CFI(".cfi_adjust_cfa_offset 56\n\t") - "movq %rbp,48(%rsp)\n\t" - __ASM_CFI(".cfi_rel_offset %rbp,48\n\t") - "movq %rbx,40(%rsp)\n\t" - __ASM_CFI(".cfi_rel_offset %rbx,40\n\t") - "movq %r12,32(%rsp)\n\t" - __ASM_CFI(".cfi_rel_offset %r12,32\n\t") - "movq %r13,24(%rsp)\n\t" - __ASM_CFI(".cfi_rel_offset %r13,24\n\t") - "movq %r14,16(%rsp)\n\t" - __ASM_CFI(".cfi_rel_offset %r14,16\n\t") - "movq %r15,8(%rsp)\n\t" - __ASM_CFI(".cfi_rel_offset %r15,8\n\t") + "subq $0x38,%rsp\n\t" + __ASM_CFI(".cfi_adjust_cfa_offset 0x38\n\t") + "movq %rbp,0x30(%rsp)\n\t" + __ASM_CFI(".cfi_rel_offset %rbp,0x30\n\t") + "leaq 0x30(%rsp),%rbp\n\t" + __ASM_CFI(".cfi_def_cfa_register %rbp\n\t") + "movq %rbx,-0x08(%rbp)\n\t" + __ASM_CFI(".cfi_rel_offset %rbx,-0x08\n\t") + "movq %r12,-0x10(%rbp)\n\t" + __ASM_CFI(".cfi_rel_offset %r12,-0x10\n\t") + "movq %r13,-0x18(%rbp)\n\t" + __ASM_CFI(".cfi_rel_offset %r13,-0x18\n\t") + "movq %r14,-0x20(%rbp)\n\t" + __ASM_CFI(".cfi_rel_offset %r14,-0x20\n\t") + "movq %r15,-0x28(%rbp)\n\t" + __ASM_CFI(".cfi_rel_offset %r15,-0x28\n\t") + "leaq 0x10(%rbp),%r9\n\t" /* syscall_cfa */ /* store exit frame */ "movq %rsp,0x320(%rcx)\n\t" /* amd64_thread_data()->exit_frame */ /* set syscall frame */ - "movq 0x328(%rcx),%rax\n\t" /* amd64_thread_data()->syscall_frame */ - "orq %rax,%rax\n\t" + "movq 0x328(%rcx),%r8\n\t" /* amd64_thread_data()->syscall_frame */ + "orq %r8,%r8\n\t" "jnz 1f\n\t" - "leaq -0x400(%rsp),%rax\n\t" /* sizeof(struct syscall_frame) */ - "andq $~63,%rax\n\t" - "movq %rax,0x328(%rcx)\n" /* amd64_thread_data()->syscall_frame */ + "leaq -0x400(%rsp),%r8\n\t" /* sizeof(struct syscall_frame) */ + "andq $~63,%r8\n\t" + "movq %r8,0x328(%rcx)\n" /* amd64_thread_data()->syscall_frame */ /* switch to kernel stack */ - "1:\tmovq %rax,%rsp\n\t" + "1:\tmovq %r8,%rsp\n\t" "call " __ASM_NAME("call_init_thunk"))

1 0

Alexandre Julliard : ntdll: Add a syscall_cfa member to the ARM64 syscall frame.
by Alexandre Julliard Nov. 22, 2023

Nov. 22, 2023

Module: wine Branch: master Commit: e07d536d83c3e760904c2256ba0bfec4edd97cf6 URL: https://gitlab.winehq.org/wine/wine/-/commit/e07d536d83c3e760904c2256ba0bfe… Author: Alexandre Julliard <julliard(a)winehq.org> Date: Mon Nov 20 09:59:32 2023 +0100 ntdll: Add a syscall_cfa member to the ARM64 syscall frame. --- dlls/ntdll/unix/signal_arm64.c | 91 ++++++++++++++++++++++++++++++++++-------- 1 file changed, 74 insertions(+), 17 deletions(-) diff --git a/dlls/ntdll/unix/signal_arm64.c b/dlls/ntdll/unix/signal_arm64.c index e98fd446a66..37a2f9b1d3b 100644 --- a/dlls/ntdll/unix/signal_arm64.c +++ b/dlls/ntdll/unix/signal_arm64.c @@ -137,7 +137,7 @@ struct syscall_frame ULONG cpsr; /* 108 */ ULONG restore_flags; /* 10c */ struct syscall_frame *prev_frame; /* 110 */ - void *unused; /* 118 */ + void *syscall_cfa; /* 118 */ ULONG64 align; /* 120 */ ULONG fpcr; /* 128 */ ULONG fpsr; /* 12c */ @@ -1111,12 +1111,26 @@ extern NTSTATUS call_user_mode_callback( ULONG id, void *args, ULONG len, void * ULONG *ret_len, void *func, TEB *teb ); __ASM_GLOBAL_FUNC( call_user_mode_callback, "stp x29, x30, [sp,#-0xc0]!\n\t" + __ASM_CFI(".cfi_def_cfa_offset 0xc0\n\t") + __ASM_CFI(".cfi_offset 29,-0xc0\n\t") + __ASM_CFI(".cfi_offset 30,-0xb8\n\t") "mov x29, sp\n\t" + __ASM_CFI(".cfi_def_cfa_register 29\n\t") "stp x19, x20, [x29, #0x10]\n\t" + __ASM_CFI(".cfi_rel_offset 19,0x10\n\t") + __ASM_CFI(".cfi_rel_offset 20,0x18\n\t") "stp x21, x22, [x29, #0x20]\n\t" + __ASM_CFI(".cfi_rel_offset 21,0x20\n\t") + __ASM_CFI(".cfi_rel_offset 22,0x28\n\t") "stp x23, x24, [x29, #0x30]\n\t" + __ASM_CFI(".cfi_rel_offset 23,0x30\n\t") + __ASM_CFI(".cfi_rel_offset 24,0x38\n\t") "stp x25, x26, [x29, #0x40]\n\t" + __ASM_CFI(".cfi_rel_offset 25,0x40\n\t") + __ASM_CFI(".cfi_rel_offset 26,0x48\n\t") "stp x27, x28, [x29, #0x50]\n\t" + __ASM_CFI(".cfi_rel_offset 27,0x50\n\t") + __ASM_CFI(".cfi_rel_offset 28,0x58\n\t") "stp d8, d9, [x29, #0x60]\n\t" "stp d10, d11, [x29, #0x70]\n\t" "stp d12, d13, [x29, #0x80]\n\t" @@ -1132,9 +1146,10 @@ __ASM_GLOBAL_FUNC( call_user_mode_callback, "ldr x7, [x18, #0x2f8]\n\t" /* arm64_thread_data()->syscall_frame */ "sub x3, sp, #0x330\n\t" /* sizeof(struct syscall_frame) */ "str x3, [x18, #0x2f8]\n\t" /* arm64_thread_data()->syscall_frame */ + "add x8, x29, #0xc0\n\t" + "stp x7, x8, [x3, #0x110]\n\t" /* frame->prev_frame,syscall_cfa */ /* switch to user stack */ "mov sp, x1\n\t" /* stack */ - "str x7, [x3, #0x110]\n\t" /* frame->prev_frame */ "br x5" ) @@ -1145,19 +1160,42 @@ extern void DECLSPEC_NORETURN user_mode_callback_return( void *ret_ptr, ULONG re NTSTATUS status, TEB *teb ); __ASM_GLOBAL_FUNC( user_mode_callback_return, "ldr x4, [x3, #0x2f8]\n\t" /* arm64_thread_data()->syscall_frame */ - "ldr x5, [x4, #0x110]\n\t" /* prev_frame */ + "ldp x5, x29, [x4,#0x110]\n\t" /* prev_frame,syscall_cfa */ "str x5, [x3, #0x2f8]\n\t" /* arm64_thread_data()->syscall_frame */ - "add x29, x4, #0x330\n\t" /* sizeof(struct syscall_frame) */ + "sub x29, x29, #0xc0\n\t" + __ASM_CFI(".cfi_def_cfa_register 29\n\t") + __ASM_CFI(".cfi_rel_offset 29,0x00\n\t") + __ASM_CFI(".cfi_rel_offset 30,0x08\n\t") + __ASM_CFI(".cfi_rel_offset 19,0x10\n\t") + __ASM_CFI(".cfi_rel_offset 20,0x18\n\t") + __ASM_CFI(".cfi_rel_offset 21,0x20\n\t") + __ASM_CFI(".cfi_rel_offset 22,0x28\n\t") + __ASM_CFI(".cfi_rel_offset 23,0x30\n\t") + __ASM_CFI(".cfi_rel_offset 24,0x38\n\t") + __ASM_CFI(".cfi_rel_offset 25,0x40\n\t") + __ASM_CFI(".cfi_rel_offset 26,0x48\n\t") + __ASM_CFI(".cfi_rel_offset 27,0x50\n\t") + __ASM_CFI(".cfi_rel_offset 28,0x58\n\t") "ldp x5, x6, [x29, #0xb0]\n\t" "str x6, [x3]\n\t" /* teb->Tib.ExceptionList */ "msr fpcr, x5\n\t" "lsr x5, x5, #32\n\t" "msr fpsr, x5\n\t" "ldp x19, x20, [x29, #0x10]\n\t" + __ASM_CFI(".cfi_same_value 19\n\t") + __ASM_CFI(".cfi_same_value 20\n\t") "ldp x21, x22, [x29, #0x20]\n\t" + __ASM_CFI(".cfi_same_value 21\n\t") + __ASM_CFI(".cfi_same_value 22\n\t") "ldp x23, x24, [x29, #0x30]\n\t" + __ASM_CFI(".cfi_same_value 23\n\t") + __ASM_CFI(".cfi_same_value 24\n\t") "ldp x25, x26, [x29, #0x40]\n\t" + __ASM_CFI(".cfi_same_value 25\n\t") + __ASM_CFI(".cfi_same_value 26\n\t") "ldp x27, x28, [x29, #0x50]\n\t" + __ASM_CFI(".cfi_same_value 27\n\t") + __ASM_CFI(".cfi_same_value 28\n\t") "ldp d8, d9, [x29, #0x60]\n\t" "ldp d10, d11, [x29, #0x70]\n\t" "ldp d12, d13, [x29, #0x80]\n\t" @@ -1604,10 +1642,9 @@ void syscall_dispatcher_return_slowpath(void) /*********************************************************************** * call_init_thunk */ -void call_init_thunk( LPTHREAD_START_ROUTINE entry, void *arg, BOOL suspend, TEB *teb ) +void call_init_thunk( LPTHREAD_START_ROUTINE entry, void *arg, BOOL suspend, TEB *teb, + struct syscall_frame *frame, void *syscall_cfa ) { - struct arm64_thread_data *thread_data = (struct arm64_thread_data *)&teb->GdiTebBatch; - struct syscall_frame *frame = thread_data->syscall_frame; CONTEXT *ctx, context = { CONTEXT_ALL }; I386_CONTEXT *i386_context; ARM_CONTEXT *arm_context; @@ -1659,8 +1696,8 @@ void call_init_thunk( LPTHREAD_START_ROUTINE entry, void *arg, BOOL suspend, TEB frame->pc = (ULONG64)pLdrInitializeThunk; frame->x[0] = (ULONG64)ctx; frame->x[18] = (ULONG64)teb; - frame->prev_frame = NULL; frame->restore_flags |= CONTEXT_INTEGER; + frame->syscall_cfa = syscall_cfa; syscall_frame_fixup_for_fastpath( frame ); pthread_sigmask( SIG_UNBLOCK, &server_block_set, NULL ); @@ -1672,29 +1709,49 @@ void call_init_thunk( LPTHREAD_START_ROUTINE entry, void *arg, BOOL suspend, TEB * signal_start_thread */ __ASM_GLOBAL_FUNC( signal_start_thread, - "stp x29, x30, [sp,#-16]!\n\t" - /* store exit frame */ + "stp x29, x30, [sp,#-0xc0]!\n\t" + __ASM_CFI(".cfi_def_cfa_offset 0xc0\n\t") + __ASM_CFI(".cfi_offset 29,-0xc0\n\t") + __ASM_CFI(".cfi_offset 30,-0xb8\n\t") "mov x29, sp\n\t" + __ASM_CFI(".cfi_def_cfa_register 29\n\t") + "stp x19, x20, [x29, #0x10]\n\t" + __ASM_CFI(".cfi_rel_offset 19,0x10\n\t") + __ASM_CFI(".cfi_rel_offset 20,0x18\n\t") + "stp x21, x22, [x29, #0x20]\n\t" + __ASM_CFI(".cfi_rel_offset 21,0x20\n\t") + __ASM_CFI(".cfi_rel_offset 22,0x28\n\t") + "stp x23, x24, [x29, #0x30]\n\t" + __ASM_CFI(".cfi_rel_offset 23,0x30\n\t") + __ASM_CFI(".cfi_rel_offset 24,0x38\n\t") + "stp x25, x26, [x29, #0x40]\n\t" + __ASM_CFI(".cfi_rel_offset 25,0x40\n\t") + __ASM_CFI(".cfi_rel_offset 26,0x48\n\t") + "stp x27, x28, [x29, #0x50]\n\t" + __ASM_CFI(".cfi_rel_offset 27,0x50\n\t") + __ASM_CFI(".cfi_rel_offset 28,0x58\n\t") + "add x5, x29, #0xc0\n\t" /* syscall_cfa */ + /* store exit frame */ "str x29, [x3, #0x2f0]\n\t" /* arm64_thread_data()->exit_frame */ /* set syscall frame */ - "ldr x8, [x3, #0x2f8]\n\t" /* arm64_thread_data()->syscall_frame */ - "cbnz x8, 1f\n\t" - "sub x8, sp, #0x330\n\t" /* sizeof(struct syscall_frame) */ - "str x8, [x3, #0x2f8]\n\t" /* arm64_thread_data()->syscall_frame */ + "ldr x4, [x3, #0x2f8]\n\t" /* arm64_thread_data()->syscall_frame */ + "cbnz x4, 1f\n\t" + "sub x4, sp, #0x330\n\t" /* sizeof(struct syscall_frame) */ + "str x4, [x3, #0x2f8]\n\t" /* arm64_thread_data()->syscall_frame */ /* switch to kernel stack */ - "1:\tmov sp, x8\n\t" + "1:\tmov sp, x4\n\t" "bl " __ASM_NAME("call_init_thunk") ) /*********************************************************************** * signal_exit_thread */ __ASM_GLOBAL_FUNC( signal_exit_thread, - "stp x29, x30, [sp,#-16]!\n\t" + "stp x29, x30, [sp,#-0xc0]!\n\t" "ldr x3, [x2, #0x2f0]\n\t" /* arm64_thread_data()->exit_frame */ "str xzr, [x2, #0x2f0]\n\t" "cbz x3, 1f\n\t" "mov sp, x3\n" - "1:\tldp x29, x30, [sp], #16\n\t" + "1:\tldp x29, x30, [sp], #0xc0\n\t" "br x1" )

1 0

Alexandre Julliard : ntdll: Connect syscall frames across user callbacks on ARM64.
by Alexandre Julliard Nov. 22, 2023

Nov. 22, 2023

Module: wine Branch: master Commit: c74f41e46db51277976f0e95ee46625e9c127f3f URL: https://gitlab.winehq.org/wine/wine/-/commit/c74f41e46db51277976f0e95ee4662… Author: Alexandre Julliard <julliard(a)winehq.org> Date: Mon Nov 20 13:53:45 2023 +0100 ntdll: Connect syscall frames across user callbacks on ARM64. --- dlls/ntdll/unix/dwarf.h | 12 ++++++++++++ dlls/ntdll/unix/signal_arm64.c | 35 +++++++++++++++++++++++++++++++++-- 2 files changed, 45 insertions(+), 2 deletions(-) diff --git a/dlls/ntdll/unix/dwarf.h b/dlls/ntdll/unix/dwarf.h index 88c6991747f..ef9eabb1d53 100644 --- a/dlls/ntdll/unix/dwarf.h +++ b/dlls/ntdll/unix/dwarf.h @@ -1050,7 +1050,19 @@ static void apply_frame_state( CONTEXT *context, struct frame_state *state, #elif defined(__aarch64__) +#define DW_OP_x19 DW_OP_breg19 +#define DW_OP_x20 DW_OP_breg20 +#define DW_OP_x21 DW_OP_breg21 +#define DW_OP_x22 DW_OP_breg22 +#define DW_OP_x23 DW_OP_breg23 +#define DW_OP_x24 DW_OP_breg24 +#define DW_OP_x25 DW_OP_breg25 +#define DW_OP_x26 DW_OP_breg26 +#define DW_OP_x27 DW_OP_breg27 #define DW_OP_x28 DW_OP_breg28 +#define DW_OP_x29 DW_OP_breg29 +#define DW_OP_x30 DW_OP_breg30 +#define DW_OP_sp DW_OP_breg31 #define DW_REG_x19 19 #define DW_REG_x20 20 diff --git a/dlls/ntdll/unix/signal_arm64.c b/dlls/ntdll/unix/signal_arm64.c index 37a2f9b1d3b..4eda6d2eb88 100644 --- a/dlls/ntdll/unix/signal_arm64.c +++ b/dlls/ntdll/unix/signal_arm64.c @@ -1790,8 +1790,23 @@ __ASM_GLOBAL_FUNC( __wine_syscall_dispatcher, "stp q26, q27, [x10, #0x2d0]\n\t" "stp q28, q29, [x10, #0x2f0]\n\t" "stp q30, q31, [x10, #0x310]\n\t" + "mov x22, x10\n\t" /* switch to kernel stack */ "mov sp, x10\n\t" + /* we're now on the kernel stack, stitch unwind info with previous frame */ + __ASM_CFI_CFA_IS_AT2(x22, 0x98, 0x02) /* frame->syscall_cfa */ + __ASM_CFI(".cfi_offset 29, -0xc0\n\t") + __ASM_CFI(".cfi_offset 30, -0xb8\n\t") + __ASM_CFI(".cfi_offset 19, -0xb0\n\t") + __ASM_CFI(".cfi_offset 20, -0xa8\n\t") + __ASM_CFI(".cfi_offset 21, -0xa0\n\t") + __ASM_CFI(".cfi_offset 22, -0x98\n\t") + __ASM_CFI(".cfi_offset 23, -0x90\n\t") + __ASM_CFI(".cfi_offset 24, -0x88\n\t") + __ASM_CFI(".cfi_offset 25, -0x80\n\t") + __ASM_CFI(".cfi_offset 26, -0x78\n\t") + __ASM_CFI(".cfi_offset 27, -0x70\n\t") + __ASM_CFI(".cfi_offset 28, -0x68\n\t") "and x20, x8, #0xfff\n\t" /* syscall number */ "ubfx x21, x8, #12, #2\n\t" /* syscall table number */ "adr x16, " __ASM_NAME("KeServiceDescriptorTable") "\n\t" @@ -1799,7 +1814,6 @@ __ASM_GLOBAL_FUNC( __wine_syscall_dispatcher, "ldr x16, [x21, #16]\n\t" /* table->ServiceLimit */ "cmp x20, x16\n\t" "bcs 4f\n\t" - "mov x22, sp\n\t" "ldr x16, [x21, #24]\n\t" /* table->ArgumentTable */ "ldrb w9, [x16, x20]\n\t" "subs x9, x9, #64\n\t" @@ -1815,6 +1829,7 @@ __ASM_GLOBAL_FUNC( __wine_syscall_dispatcher, "ldr x16, [x16, x20, lsl 3]\n\t" "blr x16\n\t" "mov sp, x22\n" + __ASM_CFI_CFA_IS_AT2(sp, 0x98, 0x02) /* frame->syscall_cfa */ __ASM_LOCAL_LABEL("__wine_syscall_dispatcher_return") ":\n\t" "ldr w16, [sp, #0x10c]\n\t" /* frame->restore_flags */ "tbz x16, #1, 2f\n\t" /* CONTEXT_INTEGER */ @@ -1894,14 +1909,30 @@ __ASM_GLOBAL_FUNC( __wine_unix_call_dispatcher, "stp x30, x9, [x10, #0xf0]\n\t" "mrs x9, NZCV\n\t" "stp x30, x9, [x10, #0x100]\n\t" + "mov x19, x10\n\t" /* switch to kernel stack */ "mov sp, x10\n\t" + /* we're now on the kernel stack, stitch unwind info with previous frame */ + __ASM_CFI_CFA_IS_AT2(x19, 0x98, 0x02) /* frame->syscall_cfa */ + __ASM_CFI(".cfi_offset 29, -0xc0\n\t") + __ASM_CFI(".cfi_offset 30, -0xb8\n\t") + __ASM_CFI(".cfi_offset 19, -0xb0\n\t") + __ASM_CFI(".cfi_offset 20, -0xa8\n\t") + __ASM_CFI(".cfi_offset 21, -0xa0\n\t") + __ASM_CFI(".cfi_offset 22, -0x98\n\t") + __ASM_CFI(".cfi_offset 23, -0x90\n\t") + __ASM_CFI(".cfi_offset 24, -0x88\n\t") + __ASM_CFI(".cfi_offset 25, -0x80\n\t") + __ASM_CFI(".cfi_offset 26, -0x78\n\t") + __ASM_CFI(".cfi_offset 27, -0x70\n\t") + __ASM_CFI(".cfi_offset 28, -0x68\n\t") "ldr x16, [x0, x1, lsl 3]\n\t" "mov x0, x2\n\t" /* args */ "blr x16\n\t" "ldr w16, [sp, #0x10c]\n\t" /* frame->restore_flags */ "cbnz w16, " __ASM_LOCAL_LABEL("__wine_syscall_dispatcher_return") "\n\t" - "ldr x18, [sp, #0x90]\n\t" + __ASM_CFI_CFA_IS_AT2(sp, 0x98, 0x02) /* frame->syscall_cfa */ + "ldp x18, x19, [sp, #0x90]\n\t" "ldp x16, x17, [sp, #0xf8]\n\t" /* switch to user stack */ "mov sp, x16\n\t"

1 0

Rémi Bernon : ntdll: Connect syscall frames across user callbacks on x86-64.
by Alexandre Julliard Nov. 22, 2023

Nov. 22, 2023

Module: wine Branch: master Commit: a5745ba91a1e45ceee759c4a83236b9dd991f99b URL: https://gitlab.winehq.org/wine/wine/-/commit/a5745ba91a1e45ceee759c4a83236b… Author: Rémi Bernon <rbernon(a)codeweavers.com> Date: Thu Nov 9 16:27:02 2023 +0100 ntdll: Connect syscall frames across user callbacks on x86-64. Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=52213 Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=54346 --- dlls/ntdll/unix/signal_x86_64.c | 92 ++++++++++++++++++++++++----------------- 1 file changed, 54 insertions(+), 38 deletions(-) diff --git a/dlls/ntdll/unix/signal_x86_64.c b/dlls/ntdll/unix/signal_x86_64.c index e65b123fb7f..e6d2e447e52 100644 --- a/dlls/ntdll/unix/signal_x86_64.c +++ b/dlls/ntdll/unix/signal_x86_64.c @@ -2641,8 +2641,6 @@ __ASM_GLOBAL_FUNC( __wine_syscall_dispatcher, "1:\txsave64 0xc0(%rcx)\n\t" "jmp 3f\n" "2:\tfxsave64 0xc0(%rcx)\n" - /* remember state when $rcx is pointing to "frame" */ - __ASM_CFI(".cfi_remember_state\n\t") "3:\tleaq 0x98(%rcx),%rbp\n\t" __ASM_CFI_CFA_IS_AT1(rbp, 0x70) __ASM_CFI_REG_IS_AT1(rip, rbp, 0x58) @@ -2673,6 +2671,17 @@ __ASM_GLOBAL_FUNC( __wine_syscall_dispatcher, "leaq 0x38(%rsp),%rsi\n\t" /* 7th argument */ /* switch to kernel stack */ "movq %rcx,%rsp\n\t" + /* we're now on the kernel stack, stitch unwind info with previous frame */ + __ASM_CFI_CFA_IS_AT1(rbp, 0x10) /* frame->syscall_cfa */ + __ASM_CFI(".cfi_offset %rip,-0x08\n\t") + __ASM_CFI(".cfi_offset %rbp,-0x10\n\t") + __ASM_CFI(".cfi_offset %rbx,-0x18\n\t") + __ASM_CFI(".cfi_offset %r12,-0x20\n\t") + __ASM_CFI(".cfi_offset %r13,-0x28\n\t") + __ASM_CFI(".cfi_offset %r14,-0x30\n\t") + __ASM_CFI(".cfi_offset %r15,-0x38\n\t") + __ASM_CFI(".cfi_undefined %rdi\n\t") + __ASM_CFI(".cfi_undefined %rsi\n\t") "movq 0x00(%rcx),%rax\n\t" "movq 0x18(%rcx),%r11\n\t" /* 2nd argument */ "movl %eax,%ebx\n\t" @@ -2702,8 +2711,6 @@ __ASM_GLOBAL_FUNC( __wine_syscall_dispatcher, "movq (%rbx),%r10\n\t" /* table->ServiceTable */ "callq *(%r10,%rax,8)\n\t" "leaq -0x98(%rbp),%rcx\n\t" - /* $rcx is now pointing to "frame" again */ - __ASM_CFI(".cfi_restore_state\n") __ASM_LOCAL_LABEL("__wine_syscall_dispatcher_return") ":\n\t" "movl 0xb4(%rcx),%edx\n\t" /* frame->restore_flags */ #ifdef __linux__ @@ -2736,49 +2743,50 @@ __ASM_GLOBAL_FUNC( __wine_syscall_dispatcher, "jmp 4f\n" "3:\tfxrstor64 0xc0(%rcx)\n" "4:\tmovq 0x98(%rcx),%rbp\n\t" - __ASM_CFI(".cfi_same_value rbp\n\t") + /* push rbp-based kernel stack cfi */ + __ASM_CFI("\t.cfi_remember_state\n") + __ASM_CFI_CFA_IS_AT2(rcx, 0xa8, 0x01) /* frame->syscall_cfa */ "movq 0x68(%rcx),%r15\n\t" - __ASM_CFI(".cfi_same_value r15\n\t") "movq 0x60(%rcx),%r14\n\t" - __ASM_CFI(".cfi_same_value r14\n\t") "movq 0x58(%rcx),%r13\n\t" - __ASM_CFI(".cfi_same_value r13\n\t") "movq 0x50(%rcx),%r12\n\t" - __ASM_CFI(".cfi_same_value r12\n\t") "movq 0x28(%rcx),%rdi\n\t" - __ASM_CFI(".cfi_same_value rdi\n\t") "movq 0x20(%rcx),%rsi\n\t" - __ASM_CFI(".cfi_same_value rsi\n\t") "movq 0x08(%rcx),%rbx\n\t" - __ASM_CFI(".cfi_same_value rbx\n\t") "testl $0x3,%edx\n\t" /* CONTEXT_CONTROL | CONTEXT_INTEGER */ "jnz 1f\n\t" - __ASM_CFI(".cfi_remember_state\n\t") "movq 0x80(%rcx),%r11\n\t" /* frame->eflags */ "pushq %r11\n\t" "popfq\n\t" + /* switch to user stack */ "movq 0x88(%rcx),%rsp\n\t" - __ASM_CFI(".cfi_def_cfa rsp, 0\n\t") + /* push rcx-based kernel stack cfi */ + __ASM_CFI("\t.cfi_remember_state\n") + __ASM_CFI(".cfi_def_cfa %rsp, 0\n\t") + __ASM_CFI_REG_IS_AT2(rip, rcx, 0xf0, 0x00) + __ASM_CFI(".cfi_same_value %rbp\n\t") + __ASM_CFI(".cfi_same_value %rbx\n\t") + __ASM_CFI(".cfi_same_value %r12\n\t") + __ASM_CFI(".cfi_same_value %r13\n\t") + __ASM_CFI(".cfi_same_value %r14\n\t") + __ASM_CFI(".cfi_same_value %r15\n\t") + __ASM_CFI(".cfi_same_value %rdi\n\t") + __ASM_CFI(".cfi_same_value %rsi\n\t") "movq 0x70(%rcx),%rcx\n\t" /* frame->rip */ __ASM_CFI(".cfi_register rip, rcx\n\t") "pushq %rcx\n\t" __ASM_CFI(".cfi_adjust_cfa_offset 8\n\t") "ret\n\t" - /* $rcx is now pointing to "frame" again */ - __ASM_CFI(".cfi_restore_state\n\t") - /* remember state when $rcx is pointing to "frame" */ - __ASM_CFI(".cfi_remember_state\n\t") + /* pop rcx-based kernel stack cfi */ + __ASM_CFI("\t.cfi_restore_state\n") + "1:\tleaq 0x70(%rcx),%rsp\n\t" - __ASM_CFI_CFA_IS_AT1(rsp, 0x18) - __ASM_CFI_REG_IS_AT1(rip, rsp, 0x00) "testl $0x2,%edx\n\t" /* CONTEXT_INTEGER */ "jnz 1f\n\t" "movq 0x10(%rsp),%r11\n\t" /* frame->eflags */ "movq (%rsp),%rcx\n\t" /* frame->rip */ - __ASM_CFI(".cfi_register rip, rcx\n\t") "iretq\n" - __ASM_CFI_REG_IS_AT1(rip, rsp, 0x00) "1:\tmovq 0x00(%rcx),%rax\n\t" "movq 0x18(%rcx),%rdx\n\t" "movq 0x30(%rcx),%r8\n\t" @@ -2787,20 +2795,11 @@ __ASM_GLOBAL_FUNC( __wine_syscall_dispatcher, "movq 0x48(%rcx),%r11\n\t" "movq 0x10(%rcx),%rcx\n" "iretq\n" - __ASM_CFI_CFA_IS_AT1(rbp, 0x70) - __ASM_CFI_REG_IS_AT1(rip, rbp, 0x58) - __ASM_CFI_REG_IS_AT2(rbx, rbp, 0xf0, 0x7e) - __ASM_CFI_REG_IS_AT2(rsi, rbp, 0x88, 0x7f) - __ASM_CFI_REG_IS_AT2(rdi, rbp, 0x90, 0x7f) - __ASM_CFI_REG_IS_AT2(r12, rbp, 0xb8, 0x7f) - __ASM_CFI_REG_IS_AT1(r13, rbp, 0x40) - __ASM_CFI_REG_IS_AT1(r14, rbp, 0x48) - __ASM_CFI_REG_IS_AT1(r15, rbp, 0x50) - __ASM_CFI_REG_IS_AT1(rbp, rbp, 0x00) + + /* pop rbp-based kernel stack cfi */ + __ASM_CFI("\t.cfi_restore_state\n") "5:\tmovl $0xc000000d,%eax\n\t" /* STATUS_INVALID_PARAMETER */ "movq %rsp,%rcx\n\t" - /* $rcx is now pointing to "frame" again */ - __ASM_CFI(".cfi_restore_state\n\t") "jmp " __ASM_LOCAL_LABEL("__wine_syscall_dispatcher_return") "\n\t" ".globl " __ASM_NAME("__wine_syscall_dispatcher_return") "\n" __ASM_NAME("__wine_syscall_dispatcher_return") ":\n\t" @@ -2873,6 +2872,17 @@ __ASM_GLOBAL_FUNC( __wine_unix_call_dispatcher, #endif /* switch to kernel stack */ "movq %rcx,%rsp\n" + /* we're now on the kernel stack, stitch unwind info with previous frame */ + __ASM_CFI_CFA_IS_AT2(rsp, 0xa8, 0x01) /* frame->syscall_cfa */ + __ASM_CFI(".cfi_offset %rip,-0x08\n\t") + __ASM_CFI(".cfi_offset %rbp,-0x10\n\t") + __ASM_CFI(".cfi_offset %rbx,-0x18\n\t") + __ASM_CFI(".cfi_offset %r12,-0x20\n\t") + __ASM_CFI(".cfi_offset %r13,-0x28\n\t") + __ASM_CFI(".cfi_offset %r14,-0x30\n\t") + __ASM_CFI(".cfi_offset %r15,-0x38\n\t") + __ASM_CFI(".cfi_undefined %rdi\n\t") + __ASM_CFI(".cfi_undefined %rsi\n\t") "movq %r8,%rdi\n\t" /* args */ "callq *(%r10,%rdx,8)\n\t" "movq %rsp,%rcx\n" @@ -2895,14 +2905,20 @@ __ASM_GLOBAL_FUNC( __wine_unix_call_dispatcher, "1:\n\t" #endif "movq 0x60(%rcx),%r14\n\t" - __ASM_CFI(".cfi_same_value r14\n\t") "movq 0x28(%rcx),%rdi\n\t" - __ASM_CFI(".cfi_same_value rdi\n\t") "movq 0x20(%rcx),%rsi\n\t" /* switch to user stack */ - __ASM_CFI(".cfi_same_value rsi\n\t") "movq 0x88(%rcx),%rsp\n\t" - __ASM_CFI(".cfi_def_cfa rsp, 0\n\t") + __ASM_CFI(".cfi_def_cfa %rsp, 0\n\t") + __ASM_CFI_REG_IS_AT2(rip, rcx, 0x70, 0x00) + __ASM_CFI(".cfi_undefined %rbp\n\t") + __ASM_CFI(".cfi_undefined %rbx\n\t") + __ASM_CFI(".cfi_undefined %r12\n\t") + __ASM_CFI(".cfi_undefined %r13\n\t") + __ASM_CFI(".cfi_same_value %r14\n\t") + __ASM_CFI(".cfi_undefined %r15\n\t") + __ASM_CFI(".cfi_same_value %rdi\n\t") + __ASM_CFI(".cfi_same_value %rsi\n\t") "pushq 0x70(%rcx)\n\t" /* frame->rip */ __ASM_CFI(".cfi_adjust_cfa_offset 8\n\t") "ret" )

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Rémi Bernon : ntdll: Connect syscall frames across user callbacks on i386.
by Alexandre Julliard Nov. 22, 2023

Nov. 22, 2023

Module: wine Branch: master Commit: 578a730a2acefabab34ba09cfe4ee338d8f7b10c URL: https://gitlab.winehq.org/wine/wine/-/commit/578a730a2acefabab34ba09cfe4ee3… Author: Rémi Bernon <rbernon(a)codeweavers.com> Date: Mon Nov 6 16:22:31 2023 +0100 ntdll: Connect syscall frames across user callbacks on i386. Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=52213 Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=54346 --- dlls/ntdll/unix/signal_i386.c | 74 ++++++++++++++++++++++++------------------- 1 file changed, 41 insertions(+), 33 deletions(-) diff --git a/dlls/ntdll/unix/signal_i386.c b/dlls/ntdll/unix/signal_i386.c index 2fb9e6ad897..e611defc1cb 100644 --- a/dlls/ntdll/unix/signal_i386.c +++ b/dlls/ntdll/unix/signal_i386.c @@ -2612,6 +2612,13 @@ __ASM_GLOBAL_FUNC( __wine_syscall_dispatcher, "fwait\n" /* switch to kernel stack */ "4:\tmovl %ecx,%esp\n\t" + /* we're now on the kernel stack, stitch unwind info with previous frame */ + __ASM_CFI_CFA_IS_AT1(ebp, 0x04) /* frame->syscall_cfa */ + __ASM_CFI(".cfi_offset %eip,-4\n\t") + __ASM_CFI(".cfi_offset %ebp,-8\n\t") + __ASM_CFI(".cfi_offset %ebx,-12\n\t") + __ASM_CFI(".cfi_offset %esi,-16\n\t") + __ASM_CFI(".cfi_offset %edi,-20\n\t") "movl 0x1c(%esp),%edx\n\t" /* frame->eax */ "andl $0xfff,%edx\n\t" /* syscall number */ "cmpl 8(%ebx),%edx\n\t" /* table->ServiceLimit */ @@ -2629,12 +2636,6 @@ __ASM_GLOBAL_FUNC( __wine_syscall_dispatcher, "leal -0x34(%ebp),%esp\n" __ASM_LOCAL_LABEL("__wine_syscall_dispatcher_return") ":\t" - __ASM_CFI_CFA_IS_AT1(esp, 0x0c) - __ASM_CFI_REG_IS_AT1(eip, esp, 0x08) - __ASM_CFI_REG_IS_AT1(ebx, esp, 0x20) - __ASM_CFI_REG_IS_AT1(edi, esp, 0x2c) - __ASM_CFI_REG_IS_AT1(esi, esp, 0x30) - __ASM_CFI_REG_IS_AT1(ebp, esp, 0x34) "movl 0(%esp),%ecx\n\t" /* frame->syscall_flags + (frame->restore_flags << 16) */ "testl $0x68 << 16,%ecx\n\t" /* CONTEXT_FLOATING_POINT | CONTEXT_EXTENDED_REGISTERS | CONTEXT_XSAVE */ "jz 3f\n\t" @@ -2653,38 +2654,46 @@ __ASM_GLOBAL_FUNC( __wine_syscall_dispatcher, "2:\tfrstor 0x40(%esp)\n\t" "fwait\n" "3:\tmovl 0x2c(%esp),%edi\n\t" - __ASM_CFI(".cfi_remember_state\n\t") - __ASM_CFI(".cfi_same_value %edi\n\t") "movl 0x30(%esp),%esi\n\t" - __ASM_CFI(".cfi_same_value %esi\n\t") "movl 0x34(%esp),%ebp\n\t" - __ASM_CFI(".cfi_same_value %ebp\n\t") + /* push ebp-based kernel stack cfi */ + __ASM_CFI("\t.cfi_remember_state\n") + __ASM_CFI_CFA_IS_AT2(esp, 0xb8, 0x00) /* frame->syscall_cfa */ "testl $0x7 << 16,%ecx\n\t" /* CONTEXT_CONTROL | CONTEXT_SEGMENTS | CONTEXT_INTEGER */ "jnz 1f\n\t" "movl 0x20(%esp),%ebx\n\t" - __ASM_CFI(".cfi_remember_state\n\t") - __ASM_CFI(".cfi_same_value %ebx\n\t") "movl 0x08(%esp),%ecx\n\t" /* frame->eip */ - __ASM_CFI(".cfi_register %eip, %ecx\n\t") + /* push esp-based kernel stack cfi */ + __ASM_CFI("\t.cfi_remember_state\n") /* switch to user stack */ "movl 0x0c(%esp),%esp\n\t" /* frame->esp */ + __ASM_CFI(".cfi_def_cfa %esp,0\n\t") + __ASM_CFI(".cfi_register %eip, %ecx\n\t") + __ASM_CFI(".cfi_same_value %ebp\n\t") + __ASM_CFI(".cfi_same_value %ebx\n\t") + __ASM_CFI(".cfi_same_value %esi\n\t") + __ASM_CFI(".cfi_same_value %edi\n\t") "pushl %ecx\n\t" __ASM_CFI(".cfi_adjust_cfa_offset 4\n\t") "ret\n" + /* pop esp-based kernel stack cfi */ __ASM_CFI("\t.cfi_restore_state\n") + "1:\ttestl $0x2 << 16,%ecx\n\t" /* CONTEXT_INTEGER */ "jz 1f\n\t" "movl 0x1c(%esp),%eax\n\t" "movl 0x24(%esp),%ecx\n\t" "movl 0x28(%esp),%edx\n" "1:\tmovl 0x0c(%esp),%ebx\n\t" /* frame->esp */ - __ASM_CFI(".cfi_register %esp, %ebx\n\t") "movw 0x12(%esp),%ss\n\t" /* switch to user stack */ "xchgl %ebx,%esp\n\t" - __ASM_CFI(".cfi_def_cfa %esp, 0\n\t") - __ASM_CFI_REG_IS_AT1(eip, ebx, 0x08) - __ASM_CFI_REG_IS_AT1(ebx, ebx, 0x20) + __ASM_CFI(".cfi_def_cfa %esp,0\n\t") + __ASM_CFI(".cfi_register %eip, %ecx\n\t") + __ASM_CFI(".cfi_same_value %ebp\n\t") + __ASM_CFI(".cfi_same_value %ebx\n\t") + __ASM_CFI(".cfi_same_value %esi\n\t") + __ASM_CFI(".cfi_same_value %edi\n\t") "pushl 0x04(%ebx)\n\t" /* frame->eflags */ __ASM_CFI(".cfi_adjust_cfa_offset 4\n\t") "pushl 0x10(%ebx)\n\t" /* frame->cs */ @@ -2702,23 +2711,16 @@ __ASM_GLOBAL_FUNC( __wine_syscall_dispatcher, "popl %ds\n\t" __ASM_CFI(".cfi_adjust_cfa_offset -4\n\t") "iret\n" + /* pop ebp-based kernel stack cfi */ __ASM_CFI("\t.cfi_restore_state\n") + "6:\tmovl $0xc000000d,%eax\n\t" /* STATUS_INVALID_PARAMETER */ "jmp " __ASM_LOCAL_LABEL("__wine_syscall_dispatcher_return") "\n\t" ".globl " __ASM_NAME("__wine_syscall_dispatcher_return") "\n" __ASM_NAME("__wine_syscall_dispatcher_return") ":\n\t" - __ASM_CFI(".cfi_remember_state\n\t") - __ASM_CFI(".cfi_def_cfa %esp, 4\n\t") - __ASM_CFI(".cfi_restore %esp\n\t") - __ASM_CFI(".cfi_restore %eip\n\t") - __ASM_CFI(".cfi_restore %ebx\n\t") - __ASM_CFI(".cfi_restore %edi\n\t") - __ASM_CFI(".cfi_restore %esi\n\t") - __ASM_CFI(".cfi_restore %ebp\n\t") "movl 8(%esp),%eax\n\t" "movl 4(%esp),%esp\n\t" - __ASM_CFI(".cfi_restore_state\n\t") "jmp " __ASM_LOCAL_LABEL("__wine_syscall_dispatcher_return") ) @@ -2756,20 +2758,26 @@ __ASM_GLOBAL_FUNC( __wine_unix_call_dispatcher, "movl 8(%esp),%edx\n\t" /* code */ /* switch to kernel stack */ "leal -16(%ecx),%esp\n\t" + /* we're now on the kernel stack, stitch unwind info with previous frame */ + __ASM_CFI_CFA_IS_AT2(esp, 0xc8, 0x00) /* frame->syscall_cfa */ + __ASM_CFI(".cfi_offset %eip,-4\n\t") + __ASM_CFI(".cfi_offset %ebp,-8\n\t") + __ASM_CFI(".cfi_offset %ebx,-12\n\t") + __ASM_CFI(".cfi_offset %esi,-16\n\t") + __ASM_CFI(".cfi_offset %edi,-20\n\t") "call *(%eax,%edx,4)\n\t" "leal 16(%esp),%esp\n\t" - __ASM_CFI_CFA_IS_AT1(esp, 0x0c) - __ASM_CFI_REG_IS_AT1(eip, esp, 0x08) - __ASM_CFI_REG_IS_AT1(ebx, esp, 0x20) - __ASM_CFI_REG_IS_AT1(edi, esp, 0x2c) - __ASM_CFI_REG_IS_AT1(esi, esp, 0x30) - __ASM_CFI_REG_IS_AT1(ebp, esp, 0x34) "testw $0xffff,2(%esp)\n\t" /* frame->restore_flags */ "jnz " __ASM_LOCAL_LABEL("__wine_syscall_dispatcher_return") "\n\t" "movl 0x08(%esp),%ecx\n\t" /* frame->eip */ - __ASM_CFI(".cfi_register %eip, %ecx\n\t") /* switch to user stack */ "movl 0x0c(%esp),%esp\n\t" /* frame->esp */ + __ASM_CFI(".cfi_def_cfa %esp,0\n\t") + __ASM_CFI(".cfi_register %eip, %ecx\n\t") + __ASM_CFI(".cfi_undefined %ebp\n\t") + __ASM_CFI(".cfi_undefined %ebx\n\t") + __ASM_CFI(".cfi_undefined %esi\n\t") + __ASM_CFI(".cfi_undefined %edi\n\t") "pushl %ecx\n\t" __ASM_CFI(".cfi_adjust_cfa_offset 4\n\t") "ret" )

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