[PATCH 1/2] ntdll: Implement set_cpu_context for ARM64

[André Hentschel]

Signed-off-by: André Hentschel 
---
 dlls/ntdll/signal_arm64.c | 41 +++++++++++++++++++++++++++++++++++++----
 1 file changed, 37 insertions(+), 4 deletions(-)

diff --git a/dlls/ntdll/signal_arm64.c b/dlls/ntdll/signal_arm64.c
index 5b3e887..50903a9 100644
--- a/dlls/ntdll/signal_arm64.c
+++ b/dlls/ntdll/signal_arm64.c
@@ -231,10 +231,43 @@ __ASM_STDCALL_FUNC( RtlCaptureContext, 8,
  *
  * Set the new CPU context.
  */
-static void set_cpu_context( const CONTEXT *context )
-{
-    FIXME( "Not implemented on ARM64\n" );
-}
+void set_cpu_context( const CONTEXT *context );
+__ASM_GLOBAL_FUNC( set_cpu_context,
+                   "ldr x1,  [x0, #0x10]\n\t"   /* context->X1 */
+                   "ldr x2,  [x0, #0x18]\n\t"   /* context->X2 */
+                   "ldr x3,  [x0, #0x20]\n\t"   /* context->X3 */
+                   "ldr x4,  [x0, #0x28]\n\t"   /* context->X4 */
+                   "ldr x5,  [x0, #0x30]\n\t"   /* context->X5 */
+                   "ldr x6,  [x0, #0x38]\n\t"   /* context->X6 */
+                   "ldr x7,  [x0, #0x40]\n\t"   /* context->X7 */
+                   "ldr x8,  [x0, #0x48]\n\t"   /* context->X8 */
+                   "ldr x9,  [x0, #0x50]\n\t"   /* context->X9 */
+                   "ldr x10, [x0, #0x58]\n\t"   /* context->X10 */
+                   "ldr x11, [x0, #0x60]\n\t"   /* context->X11 */
+                   "ldr x12, [x0, #0x68]\n\t"   /* context->X12 */
+                   "ldr x13, [x0, #0x70]\n\t"   /* context->X13 */
+                   "ldr x14, [x0, #0x78]\n\t"   /* context->X14 */
+                   "ldr x16, [x0, #0x88]\n\t"   /* context->X16 */
+                   "ldr x17, [x0, #0x90]\n\t"   /* context->X17 */
+                   "ldr x18, [x0, #0x98]\n\t"   /* context->X18 */
+                   "ldr x19, [x0, #0xa0]\n\t"   /* context->X19 */
+                   "ldr x20, [x0, #0xa8]\n\t"   /* context->X20 */
+                   "ldr x21, [x0, #0xb0]\n\t"   /* context->X21 */
+                   "ldr x22, [x0, #0xb8]\n\t"   /* context->X22 */
+                   "ldr x23, [x0, #0xc0]\n\t"   /* context->X23 */
+                   "ldr x24, [x0, #0xc8]\n\t"   /* context->X24 */
+                   "ldr x25, [x0, #0xd0]\n\t"   /* context->X25 */
+                   "ldr x26, [x0, #0xd8]\n\t"   /* context->X26 */
+                   "ldr x27, [x0, #0xe0]\n\t"   /* context->X27 */
+                   "ldr x28, [x0, #0xe8]\n\t"   /* context->X28 */
+                   "ldr x29, [x0, #0xf0]\n\t"   /* context->Fp */
+                   "ldr x30, [x0, #0xf8]\n\t"   /* context->Lr */
+                   "ldr x15, [x0, #0x100]\n\t"  /* context->Sp */
+                   "mov sp, x15\n\t"
+                   "ldr x15, [x0, #0x108]\n\t"  /* context->Pc */
+                   "ldr x0,  [x0, #0x8]\n\t"    /* context->X0 */
+                   "br x15\n\t"
+                   )

/***********************************************************************
  *           copy_context

[Alexandre Julliard]

André Hentschel  writes:
> -
>               "mov sp, x15\n\t"
> -
>               "ldr x15, [x0, #0x108]\n\t"  /* context->Pc */
> -
>               "ldr x0,  [x0, #0x8]\n\t"    /* context->X0 */
> -
>               "br x15\n\t"
> -
>               )

We've been through this before, you need to restore all registers.