MIPS LLInt implementation.

https://bugs.webkit.org/show_bug.cgi?id=99706

Patch by Balazs Kilvady <kilvadyb@homejinni.com> on 2013-01-07
Reviewed by Filip Pizlo.

LLInt implementation for MIPS.

Source/JavaScriptCore:

* assembler/MacroAssemblerMIPS.h:
(JSC::MacroAssemblerMIPS::jump):
* dfg/DFGOperations.cpp:
(JSC):
* jit/JITStubs.cpp:
(JSC):
* jit/JITStubs.h:
(JITStackFrame):
* llint/LLIntOfflineAsmConfig.h:
* llint/LowLevelInterpreter.asm:
* llint/LowLevelInterpreter32_64.asm:
* offlineasm/backends.rb:
* offlineasm/instructions.rb:
* offlineasm/mips.rb: Added.

Source/WTF:

* wtf/Platform.h:

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@138970 268f45cc-cd09-0410-ab3c-d52691b4dbfc

Conflicts:
	Source/JavaScriptCore/ChangeLog
	Source/JavaScriptCore/jit/JITStubs.h

Change-Id: I1677d54c1641cf60e517772944582c8f387eeb6d
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@digia.com>
Reviewed-by: Jocelyn Turcotte <jocelyn.turcotte@digia.com>

1 files changed, 21 insertions, 8 deletions

diff --git a/Source/JavaScriptCore/jit/JITStubs.cpp b/Source/JavaScriptCore/jit/JITStubs.cpp
index 64acfeef5..168769c12 100644
--- a/Source/JavaScriptCore/jit/JITStubs.cpp
+++ b/Source/JavaScriptCore/jit/JITStubs.cpp
@@ -280,11 +280,13 @@ extern "C" {
 #define PRESERVED_S0_OFFSET         64
 #define PRESERVED_S1_OFFSET         68
 #define PRESERVED_S2_OFFSET         72
-#define PRESERVED_RETURN_ADDRESS_OFFSET 76
-#define THUNK_RETURN_ADDRESS_OFFSET 80
-#define REGISTER_FILE_OFFSET        84
-#define GLOBAL_DATA_OFFSET         100
-#define STACK_LENGTH               104
+#define PRESERVED_S3_OFFSET         76
+#define PRESERVED_S4_OFFSET         80
+#define PRESERVED_RETURN_ADDRESS_OFFSET 84
+#define THUNK_RETURN_ADDRESS_OFFSET 88
+#define REGISTER_FILE_OFFSET        92
+#define GLOBAL_DATA_OFFSET         108
+#define STACK_LENGTH               112
 #elif CPU(SH4)
 #define SYMBOL_STRING(name) #name
 /* code (r4), JSStack* (r5), CallFrame* (r6), void* unused1 (r7), void* unused2(sp), JSGlobalData (sp)*/
@@ -527,6 +529,8 @@ asm (
 SYMBOL_STRING(ctiTrampoline) ":" "\n"
     "addiu $29,$29,-" STRINGIZE_VALUE_OF(STACK_LENGTH) "\n"
     "sw    $31," STRINGIZE_VALUE_OF(PRESERVED_RETURN_ADDRESS_OFFSET) "($29)" "\n"
+    "sw    $20," STRINGIZE_VALUE_OF(PRESERVED_S4_OFFSET) "($29)" "\n"
+    "sw    $19," STRINGIZE_VALUE_OF(PRESERVED_S3_OFFSET) "($29)" "\n"
     "sw    $18," STRINGIZE_VALUE_OF(PRESERVED_S2_OFFSET) "($29)" "\n"
     "sw    $17," STRINGIZE_VALUE_OF(PRESERVED_S1_OFFSET) "($29)" "\n"
     "sw    $16," STRINGIZE_VALUE_OF(PRESERVED_S0_OFFSET) "($29)" "\n"
@@ -543,12 +547,17 @@ SYMBOL_STRING(ctiTrampoline) ":" "\n"
     "lw    $16," STRINGIZE_VALUE_OF(PRESERVED_S0_OFFSET) "($29)" "\n"
     "lw    $17," STRINGIZE_VALUE_OF(PRESERVED_S1_OFFSET) "($29)" "\n"
     "lw    $18," STRINGIZE_VALUE_OF(PRESERVED_S2_OFFSET) "($29)" "\n"
+    "lw    $19," STRINGIZE_VALUE_OF(PRESERVED_S3_OFFSET) "($29)" "\n"
+    "lw    $20," STRINGIZE_VALUE_OF(PRESERVED_S4_OFFSET) "($29)" "\n"
     "lw    $31," STRINGIZE_VALUE_OF(PRESERVED_RETURN_ADDRESS_OFFSET) "($29)" "\n"
     "jr    $31" "\n"
     "addiu $29,$29," STRINGIZE_VALUE_OF(STACK_LENGTH) "\n"
 ".set reorder" "\n"
 ".set macro" "\n"
 ".end " SYMBOL_STRING(ctiTrampoline) "\n"
+".globl " SYMBOL_STRING(ctiTrampolineEnd) "\n"
+HIDE_SYMBOL(ctiTrampolineEnd) "\n"
+SYMBOL_STRING(ctiTrampolineEnd) ":" "\n"
 );
 
 asm (
@@ -561,8 +570,8 @@ asm (
 ".ent " SYMBOL_STRING(ctiVMThrowTrampoline) "\n"
 SYMBOL_STRING(ctiVMThrowTrampoline) ":" "\n"
 #if WTF_MIPS_PIC
-    "lw    $28," STRINGIZE_VALUE_OF(PRESERVED_GP_OFFSET) "($29)" "\n"
 ".set macro" "\n"
+".cpload $31" "\n"
     "la    $25," SYMBOL_STRING(cti_vm_throw) "\n"
 ".set nomacro" "\n"
     "bal " SYMBOL_STRING(cti_vm_throw) "\n"
@@ -574,6 +583,8 @@ SYMBOL_STRING(ctiVMThrowTrampoline) ":" "\n"
     "lw    $16," STRINGIZE_VALUE_OF(PRESERVED_S0_OFFSET) "($29)" "\n"
     "lw    $17," STRINGIZE_VALUE_OF(PRESERVED_S1_OFFSET) "($29)" "\n"
     "lw    $18," STRINGIZE_VALUE_OF(PRESERVED_S2_OFFSET) "($29)" "\n"
+    "lw    $19," STRINGIZE_VALUE_OF(PRESERVED_S3_OFFSET) "($29)" "\n"
+    "lw    $20," STRINGIZE_VALUE_OF(PRESERVED_S4_OFFSET) "($29)" "\n"
     "lw    $31," STRINGIZE_VALUE_OF(PRESERVED_RETURN_ADDRESS_OFFSET) "($29)" "\n"
     "jr    $31" "\n"
     "addiu $29,$29," STRINGIZE_VALUE_OF(STACK_LENGTH) "\n"
@@ -594,6 +605,8 @@ SYMBOL_STRING(ctiOpThrowNotCaught) ":" "\n"
     "lw    $16," STRINGIZE_VALUE_OF(PRESERVED_S0_OFFSET) "($29)" "\n"
     "lw    $17," STRINGIZE_VALUE_OF(PRESERVED_S1_OFFSET) "($29)" "\n"
     "lw    $18," STRINGIZE_VALUE_OF(PRESERVED_S2_OFFSET) "($29)" "\n"
+    "lw    $19," STRINGIZE_VALUE_OF(PRESERVED_S3_OFFSET) "($29)" "\n"
+    "lw    $20," STRINGIZE_VALUE_OF(PRESERVED_S4_OFFSET) "($29)" "\n"
     "lw    $31," STRINGIZE_VALUE_OF(PRESERVED_RETURN_ADDRESS_OFFSET) "($29)" "\n"
     "jr    $31" "\n"
     "addiu $29,$29," STRINGIZE_VALUE_OF(STACK_LENGTH) "\n"
@@ -1194,9 +1207,9 @@ template<typename T> static T throwExceptionFromOpCall(JITStackFrame& jitStackFr
         ".globl " SYMBOL_STRING(cti_##op) "\n" \
         ".ent " SYMBOL_STRING(cti_##op) "\n" \
         SYMBOL_STRING(cti_##op) ":" "\n" \
-        "lw    $28," STRINGIZE_VALUE_OF(PRESERVED_GP_OFFSET) "($29)" "\n" \
-        "sw    $31," STRINGIZE_VALUE_OF(THUNK_RETURN_ADDRESS_OFFSET) "($29)" "\n" \
         ".set macro" "\n" \
+        ".cpload $25" "\n" \
+        "sw    $31," STRINGIZE_VALUE_OF(THUNK_RETURN_ADDRESS_OFFSET) "($29)" "\n" \
         "la    $25," SYMBOL_STRING(JITStubThunked_##op) "\n" \
         ".set nomacro" "\n" \
         ".reloc 1f,R_MIPS_JALR," SYMBOL_STRING(JITStubThunked_##op) "\n" \