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Commit 50ac2555 authored by Alexandre Julliard's avatar Alexandre Julliard
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ntdll: Don't pass arguments on the stack for user callbacks on x86-64.

And convert to the sysv ABI.
parent efa99eab
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Showing with 48 additions and 88 deletions
dlls/ntdll/unix/signal_x86_64.c
View file @ 50ac2555
......@@ -1573,47 +1573,30 @@ NTSTATUS call_user_exception_dispatcher( EXCEPTION_RECORD *rec, CONTEXT *context
/***********************************************************************
* call_user_mode_callback
*/
extern NTSTATUS CDECL call_user_mode_callback( void *func, void *stack, void **ret_ptr,
ULONG *ret_len, TEB *teb ) DECLSPEC_HIDDEN;
extern NTSTATUS call_user_mode_callback( ULONG id, void *args, ULONG len, void **ret_ptr,
ULONG *ret_len, void *func, TEB *teb ) DECLSPEC_HIDDEN;
__ASM_GLOBAL_FUNC( call_user_mode_callback,
"subq $0xe8,%rsp\n\t"
__ASM_SEH(".seh_stackalloc 0xf0\n\t")
__ASM_SEH(".seh_endprologue\n\t")
__ASM_CFI(".cfi_adjust_cfa_offset 0xe8\n\t")
"movq %rbp,0xe0(%rsp)\n\t"
__ASM_CFI(".cfi_rel_offset %rbp,0xe0\n\t")
"leaq 0xe0(%rsp),%rbp\n\t"
"subq $0x48,%rsp\n\t"
__ASM_CFI(".cfi_adjust_cfa_offset 0x48\n\t")
"movq %rbp,0x40(%rsp)\n\t"
__ASM_CFI(".cfi_rel_offset %rbp,0x40\n\t")
"leaq 0x40(%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 %rsi,-0x10(%rbp)\n\t"
__ASM_CFI(".cfi_rel_offset %rbx,-0x10\n\t")
"movq %rdi,-0x18(%rbp)\n\t"
__ASM_CFI(".cfi_rel_offset %rbx,-0x18\n\t")
"movq %r12,-0x20(%rbp)\n\t"
__ASM_CFI(".cfi_rel_offset %r12,-0x20\n\t")
"movq %r13,-0x28(%rbp)\n\t"
__ASM_CFI(".cfi_rel_offset %r13,-0x28\n\t")
"movq %r14,-0x30(%rbp)\n\t"
__ASM_CFI(".cfi_rel_offset %r14,-0x30\n\t")
"movq %r15,-0x38(%rbp)\n\t"
__ASM_CFI(".cfi_rel_offset %r15,-0x38\n\t")
"stmxcsr -0x40(%rbp)\n\t"
"fnstcw -0x3c(%rbp)\n\t"
"movdqa %xmm6,-0x50(%rbp)\n\t"
"movdqa %xmm7,-0x60(%rbp)\n\t"
"movdqa %xmm8,-0x70(%rbp)\n\t"
"movdqa %xmm9,-0x80(%rbp)\n\t"
"movdqa %xmm10,-0x90(%rbp)\n\t"
"movdqa %xmm11,-0xa0(%rbp)\n\t"
"movdqa %xmm12,-0xb0(%rbp)\n\t"
"movdqa %xmm13,-0xc0(%rbp)\n\t"
"movdqa %xmm14,-0xd0(%rbp)\n\t"
"movdqa %xmm15,-0xe0(%rbp)\n\t"
"movq %r8,0x10(%rbp)\n\t" /* ret_ptr */
"movq %r9,0x18(%rbp)\n\t" /* ret_len */
"movq 0x30(%rbp),%r11\n\t" /* teb */
"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")
"stmxcsr -0x30(%rbp)\n\t"
"fnstcw -0x2c(%rbp)\n\t"
"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 */
"andq $~63,%rsp\n\t"
"movq %rbp,0x400(%rsp)\n\t"
......@@ -1632,70 +1615,53 @@ __ASM_GLOBAL_FUNC( call_user_mode_callback,
"movw 0x338(%r11),%fs\n" /* amd64_thread_data()->fs */
"1:\n\t"
#endif
"movq %rcx,%r9\n\t" /* func */
"movq %rdx,%rax\n\t" /* stack */
"movq 0x8(%rax),%rcx\n\t" /* id */
"movq 0x10(%rax),%rdx\n\t" /* args */
"movq 0x18(%rax),%r8\n\t" /* len */
"movq %rax,%rsp\n\t"
"movq %rdi,%rcx\n\t" /* id */
"movq %rdx,%r8\n\t" /* len */
"movq %rsi,%rdx\n\t" /* args */
"leaq -0x20(%rsi),%rsp\n\t"
"push $0\n\t"
"jmpq *%r9" )
/***********************************************************************
* user_mode_callback_return
*/
extern void CDECL DECLSPEC_NORETURN user_mode_callback_return( void *ret_ptr, ULONG ret_len,
NTSTATUS status, TEB *teb ) DECLSPEC_HIDDEN;
extern void DECLSPEC_NORETURN user_mode_callback_return( void *ret_ptr, ULONG ret_len,
NTSTATUS status, TEB *teb ) DECLSPEC_HIDDEN;
__ASM_GLOBAL_FUNC( user_mode_callback_return,
"movq 0x328(%r9),%r10\n\t" /* amd64_thread_data()->syscall_frame */
"movq 0x328(%rcx),%r10\n\t" /* amd64_thread_data()->syscall_frame */
"movq 0xa0(%r10),%r11\n\t" /* frame->prev_frame */
"movq %r11,0x328(%r9)\n\t" /* amd64_thread_data()->syscall_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 */
__ASM_CFI(".cfi_def_cfa_register %rbp\n\t")
__ASM_CFI(".cfi_rel_offset %rbx,-0x08\n\t")
__ASM_CFI(".cfi_rel_offset %rbx,-0x10\n\t")
__ASM_CFI(".cfi_rel_offset %rbx,-0x18\n\t")
__ASM_CFI(".cfi_rel_offset %r12,-0x20\n\t")
__ASM_CFI(".cfi_rel_offset %r13,-0x28\n\t")
__ASM_CFI(".cfi_rel_offset %r14,-0x30\n\t")
__ASM_CFI(".cfi_rel_offset %r15,-0x38\n\t")
"movq 0x408(%r10),%rsi\n\t" /* exception list */
"movq %rsi,0(%r9)\n\t" /* teb->Tib.ExceptionList */
"movq 0x10(%rbp),%rsi\n\t" /* ret_ptr */
"movq 0x18(%rbp),%rdi\n\t" /* ret_len */
"movq %rcx,(%rsi)\n\t"
"movl %edx,(%rdi)\n\t"
"movdqa -0xe0(%rbp),%xmm15\n\t"
"movdqa -0xd0(%rbp),%xmm14\n\t"
"movdqa -0xc0(%rbp),%xmm13\n\t"
"movdqa -0xb0(%rbp),%xmm12\n\t"
"movdqa -0xa0(%rbp),%xmm11\n\t"
"movdqa -0x90(%rbp),%xmm10\n\t"
"movdqa -0x80(%rbp),%xmm9\n\t"
"movdqa -0x70(%rbp),%xmm8\n\t"
"movdqa -0x60(%rbp),%xmm7\n\t"
"movdqa -0x50(%rbp),%xmm6\n\t"
"ldmxcsr -0x40(%rbp)\n\t"
__ASM_CFI(".cfi_rel_offset %r12,-0x10\n\t")
__ASM_CFI(".cfi_rel_offset %r13,-0x18\n\t")
__ASM_CFI(".cfi_rel_offset %r14,-0x20\n\t")
__ASM_CFI(".cfi_rel_offset %r15,-0x28\n\t")
"movq 0x408(%r10),%rax\n\t" /* exception list */
"movq %rax,0(%rcx)\n\t" /* teb->Tib.ExceptionList */
"movq -0x38(%rbp),%r10\n\t" /* ret_ptr */
"movq -0x40(%rbp),%r11\n\t" /* ret_len */
"movq %rdi,(%r10)\n\t"
"movl %esi,(%r11)\n\t"
"ldmxcsr -0x30(%rbp)\n\t"
"fnclex\n\t"
"fldcw -0x3c(%rbp)\n\t"
"movq -0x38(%rbp),%r15\n\t"
"fldcw -0x2c(%rbp)\n\t"
"movq -0x28(%rbp),%r15\n\t"
__ASM_CFI(".cfi_same_value %r15\n\t")
"movq -0x30(%rbp),%r14\n\t"
"movq -0x20(%rbp),%r14\n\t"
__ASM_CFI(".cfi_same_value %r14\n\t")
"movq -0x28(%rbp),%r13\n\t"
"movq -0x18(%rbp),%r13\n\t"
__ASM_CFI(".cfi_same_value %r13\n\t")
"movq -0x20(%rbp),%r12\n\t"
"movq -0x10(%rbp),%r12\n\t"
__ASM_CFI(".cfi_same_value %r12\n\t")
"movq -0x18(%rbp),%rdi\n\t"
__ASM_CFI(".cfi_same_value %rdi\n\t")
"movq -0x10(%rbp),%rsi\n\t"
__ASM_CFI(".cfi_same_value %rsi\n\t")
"movq -0x08(%rbp),%rbx\n\t"
__ASM_CFI(".cfi_same_value %rbx\n\t")
"leave\n"
__ASM_CFI(".cfi_def_cfa %rsp,8\n\t")
__ASM_CFI(".cfi_same_value %rbp\n\t")
"movq %r8,%rax\n\t"
"movq %rdx,%rax\n\t"
"retq" )
......@@ -1706,19 +1672,13 @@ NTSTATUS WINAPI KeUserModeCallback( ULONG id, const void *args, ULONG len, void
{
struct syscall_frame *frame = amd64_thread_data()->syscall_frame;
void *args_data = (void *)((frame->rsp - len) & ~15);
ULONG_PTR *stack = args_data;
if ((char *)ntdll_get_thread_data()->kernel_stack + min_kernel_stack > (char *)&frame)
return STATUS_STACK_OVERFLOW;
memcpy( args_data, args, len );
*(--stack) = 0;
*(--stack) = len;
*(--stack) = (ULONG_PTR)args_data;
*(--stack) = id;
*(--stack) = 0xdeadbabe;
return call_user_mode_callback( pKiUserCallbackDispatcher, stack, ret_ptr, ret_len, NtCurrentTeb() );
return call_user_mode_callback( id, args_data, len, ret_ptr, ret_len,
pKiUserCallbackDispatcher, NtCurrentTeb() );
}
......
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