Changeset 48574 in webkit for trunk/JavaScriptCore/jit/JITStubs.cpp

Timestamp:

Sep 21, 2009, 12:37:13 AM (16 years ago)

Author:

[email protected]

Message:

Fix stack alignment with ARM THUMB2 JIT.
​https://bugs.webkit.org/show_bug.cgi?id=29526

Patch by Gavin Barraclough <​[email protected]> on 2009-09-19
Reviewed by Sam 'Cabin Boy' Weinig.

Stack is currently being decremented by 0x3c, bump this to 0x40 to make this a
multiple of 16 bytes.

• jit/JITStubs.cpp:

(JSC::JITThunks::JITThunks):

• jit/JITStubs.h:

File:

• trunk/JavaScriptCore/jit/JITStubs.cpp (modified) (4 diffs)

trunk/JavaScriptCore/jit/JITStubs.cpp

@@ -472 +472 @@
 ".thumb_func " THUMB_FUNC_PARAM(ctiTrampoline) "\n"
 SYMBOL_STRING(ctiTrampoline) ":" "\n"
-    "sub sp, sp, #0x3c" "\n"
+    "sub sp, sp, #0x40" "\n"
     "str lr, [sp, #0x20]" "\n"
     "str r4, [sp, #0x24]" "\n"
@@ -487 +487 @@
     "ldr r4, [sp, #0x24]" "\n"
     "ldr lr, [sp, #0x20]" "\n"
-    "add sp, sp, #0x3c" "\n"
+    "add sp, sp, #0x40" "\n"
     "bx lr" "\n"
 );
@@ -504 +504 @@
     "ldr r4, [sp, #0x24]" "\n"
     "ldr lr, [sp, #0x20]" "\n"
-    "add sp, sp, #0x3c" "\n"
+    "add sp, sp, #0x40" "\n"
     "bx lr" "\n"
 );
@@ -656 +656 @@
     ASSERT(OBJECT_OFFSETOF(struct JITStackFrame, exception) == 0x38);
     // The fifth argument is the first item already on the stack.
-    ASSERT(OBJECT_OFFSETOF(struct JITStackFrame, enabledProfilerReference) == 0x3c);
+    ASSERT(OBJECT_OFFSETOF(struct JITStackFrame, enabledProfilerReference) == 0x40);
 
     ASSERT(OBJECT_OFFSETOF(struct JITStackFrame, thunkReturnAddress) == 0x1C);