LLVM 17 or 18 no longer allow non-private labels to appear between .cfi_startproc/endproc when targeting Mach-O.
Similar fixes as in commit 295d521b11644fb76c36854336b13c2155bb7d79.
Since this is needed for 2 out of 4 architectures, would it be better to do it for all 4 and then modify the shared `__wine_syscall_dispatcher_return()` prototype?
From: Brendan Shanks bshanks@codeweavers.com
LLVM no longer allows non-private labels to appear between .cfi_startproc/endproc when targeting Mach-O.
Similar fixes as in commit 295d521b11644fb76c36854336b13c2155bb7d79. --- dlls/ntdll/unix/signal_arm64.c | 16 ++++++++++++---- dlls/ntdll/unix/signal_x86_64.c | 13 +++++++++---- 2 files changed, 21 insertions(+), 8 deletions(-)
diff --git a/dlls/ntdll/unix/signal_arm64.c b/dlls/ntdll/unix/signal_arm64.c index 58911d9b1f2..49d54b11f91 100644 --- a/dlls/ntdll/unix/signal_arm64.c +++ b/dlls/ntdll/unix/signal_arm64.c @@ -1017,10 +1017,12 @@ static BOOL handle_syscall_fault( ucontext_t *context, EXCEPTION_RECORD *rec ) } else { + extern typeof(__wine_syscall_dispatcher_return) *__wine_syscall_dispatcher_return_ptr; + TRACE( "returning to user mode ip=%p ret=%08x\n", (void *)frame->pc, rec->ExceptionCode ); REGn_sig(0, context) = (ULONG_PTR)frame; REGn_sig(1, context) = rec->ExceptionCode; - PC_sig(context) = (ULONG_PTR)__wine_syscall_dispatcher_return; + PC_sig(context) = (ULONG_PTR)__wine_syscall_dispatcher_return_ptr; } return TRUE; } @@ -1381,6 +1383,7 @@ void call_init_thunk( LPTHREAD_START_ROUTINE entry, void *arg, BOOL suspend, TEB CONTEXT *ctx, context = { CONTEXT_ALL }; I386_CONTEXT *i386_context; ARM_CONTEXT *arm_context; + extern typeof(__wine_syscall_dispatcher_return) *__wine_syscall_dispatcher_return_ptr;
thread_data->syscall_table = KeServiceDescriptorTable;
@@ -1440,7 +1443,7 @@ void call_init_thunk( LPTHREAD_START_ROUTINE entry, void *arg, BOOL suspend, TEB syscall_frame_fixup_for_fastpath( frame );
pthread_sigmask( SIG_UNBLOCK, &server_block_set, NULL ); - __wine_syscall_dispatcher_return( frame, 0 ); + __wine_syscall_dispatcher_return_ptr( frame, 0 ); }
@@ -1608,12 +1611,17 @@ __ASM_GLOBAL_FUNC( __wine_syscall_dispatcher, "4:\tmov x0, #0xc0000000\n\t" /* STATUS_INVALID_PARAMETER */ "movk x0, #0x000d\n\t" "b " __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_LOCAL_LABEL("__wine_syscall_dispatcher_return_label") ":\n\t" "mov sp, x0\n\t" "mov x0, x1\n\t" "b " __ASM_LOCAL_LABEL("__wine_syscall_dispatcher_return") )
+asm( ".data\n\t" + ".align 4\n\t" + ".globl " __ASM_NAME("__wine_syscall_dispatcher_return_ptr") "\n" + __ASM_NAME("__wine_syscall_dispatcher_return_ptr") ":\n\t" + ".quad " __ASM_LOCAL_LABEL("__wine_syscall_dispatcher_return_label") "\n\t" + ".text\n\t" );
/*********************************************************************** * __wine_unix_call_dispatcher diff --git a/dlls/ntdll/unix/signal_x86_64.c b/dlls/ntdll/unix/signal_x86_64.c index a163d5d0b33..894ddee9348 100644 --- a/dlls/ntdll/unix/signal_x86_64.c +++ b/dlls/ntdll/unix/signal_x86_64.c @@ -1880,10 +1880,12 @@ static BOOL handle_syscall_fault( ucontext_t *sigcontext, EXCEPTION_RECORD *rec, } else { + extern typeof(__wine_syscall_dispatcher_return) *__wine_syscall_dispatcher_return_ptr; + TRACE_(seh)( "returning to user mode ip=%016lx ret=%08x\n", frame->rip, rec->ExceptionCode ); RDI_sig(sigcontext) = (ULONG_PTR)frame; RSI_sig(sigcontext) = rec->ExceptionCode; - RIP_sig(sigcontext) = (ULONG_PTR)__wine_syscall_dispatcher_return; + RIP_sig(sigcontext) = (ULONG_PTR)__wine_syscall_dispatcher_return_ptr; } return TRUE; } @@ -2513,6 +2515,7 @@ void call_init_thunk( LPTHREAD_START_ROUTINE entry, void *arg, BOOL suspend, TEB struct amd64_thread_data *thread_data = (struct amd64_thread_data *)&teb->GdiTebBatch; CONTEXT *ctx, context = { 0 }; I386_CONTEXT *wow_context; + extern typeof(__wine_syscall_dispatcher_return) *__wine_syscall_dispatcher_return_ptr;
thread_data->syscall_table = KeServiceDescriptorTable; thread_data->xstate_features_mask = xstate_supported_features_mask; @@ -2592,7 +2595,7 @@ void call_init_thunk( LPTHREAD_START_ROUTINE entry, void *arg, BOOL suspend, TEB frame->syscall_cfa = syscall_cfa;
pthread_sigmask( SIG_UNBLOCK, &server_block_set, NULL ); - __wine_syscall_dispatcher_return( frame, 0 ); + __wine_syscall_dispatcher_return_ptr( frame, 0 ); }
@@ -2877,8 +2880,7 @@ __ASM_GLOBAL_FUNC( __wine_syscall_dispatcher, "5:\tmovl $0xc000000d,%eax\n\t" /* STATUS_INVALID_PARAMETER */ "movq %rsp,%rcx\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" + __ASM_LOCAL_LABEL("__wine_syscall_dispatcher_return_label") ":\n\t" "movq %rdi,%rcx\n\t" "movl 0xb0(%rcx),%r14d\n\t" /* frame->syscall_flags */ "movq %rsi,%rax\n\t" @@ -2994,6 +2996,9 @@ asm( ".data\n\t" ".globl " __ASM_NAME("__wine_unix_call_dispatcher_prolog_end_ptr") "\n" __ASM_NAME("__wine_unix_call_dispatcher_prolog_end_ptr") ":\n\t" ".quad " __ASM_LOCAL_LABEL("__wine_unix_call_dispatcher_prolog_end") "\n\t" + ".globl " __ASM_NAME("__wine_syscall_dispatcher_return_ptr") "\n" + __ASM_NAME("__wine_syscall_dispatcher_return_ptr") ":\n\t" + ".quad " __ASM_LOCAL_LABEL("__wine_syscall_dispatcher_return_label") "\n\t" ".text\n\t" );
#endif /* __x86_64__ */
Couldn't `__wine_syscall_dispatcher_return` simply be made into a separate function?
-
Alexandre Julliard (＠julliard) -
Brendan Shanks
-
Brendan Shanks (＠bshanks)