JavaScriptCore-1097.3.tar.gz

[apple/javascriptcore.git] / assembler / ARMAssembler.cpp

diff --git a/assembler/ARMAssembler.cpp b/assembler/ARMAssembler.cpp
index a181b7e982f4a4eaa7c68e78a0b94197a7b06f3c..74809cadb8f525c18345ed19546452dacdaaa73e 100644 (file)
--- a/assembler/ARMAssembler.cpp
+++ b/assembler/ARMAssembler.cpp
@@ -272,49 +272,50 @@ void ARMAssembler::dataTransfer32(bool isLoad, RegisterID srcDst, RegisterID bas
             add_r(ARMRegisters::S0, base, OP2_IMM | (offset >> 12) | (10 << 8));
             dtr_u(isLoad, srcDst, ARMRegisters::S0, (offset & 0xfff) | transferFlag);
         } else {
-            ARMWord reg = getImm(offset, ARMRegisters::S0);
-            dtr_ur(isLoad, srcDst, base, reg | transferFlag);
+            moveImm(offset, ARMRegisters::S0);
+            dtr_ur(isLoad, srcDst, base, ARMRegisters::S0 | transferFlag);
         }
     } else {
-        offset = -offset;
-        if (offset <= 0xfff)
-            dtr_d(isLoad, srcDst, base, offset | transferFlag);
-        else if (offset <= 0xfffff) {
-            sub_r(ARMRegisters::S0, base, OP2_IMM | (offset >> 12) | (10 << 8));
-            dtr_d(isLoad, srcDst, ARMRegisters::S0, (offset & 0xfff) | transferFlag);
+        if (offset >= -0xfff)
+            dtr_d(isLoad, srcDst, base, -offset | transferFlag);
+        else if (offset >= -0xfffff) {
+            sub_r(ARMRegisters::S0, base, OP2_IMM | (-offset >> 12) | (10 << 8));
+            dtr_d(isLoad, srcDst, ARMRegisters::S0, (-offset & 0xfff) | transferFlag);
         } else {
-            ARMWord reg = getImm(offset, ARMRegisters::S0);
-            dtr_dr(isLoad, srcDst, base, reg | transferFlag);
+            moveImm(offset, ARMRegisters::S0);
+            dtr_ur(isLoad, srcDst, base, ARMRegisters::S0 | transferFlag);
         }
     }
 }
 
-void ARMAssembler::baseIndexTransfer32(bool isLoad, RegisterID srcDst, RegisterID base, RegisterID index, int scale, int32_t offset)
+void ARMAssembler::baseIndexTransfer32(bool isLoad, RegisterID srcDst, RegisterID base, RegisterID index, int scale, int32_t offset, bool bytes)
 {
     ARMWord op2;
+    ARMWord transferFlag = bytes ? DT_BYTE : 0;
 
     ASSERT(scale >= 0 && scale <= 3);
     op2 = lsl(index, scale);
 
     if (offset >= 0 && offset <= 0xfff) {
         add_r(ARMRegisters::S0, base, op2);
-        dtr_u(isLoad, srcDst, ARMRegisters::S0, offset);
+        dtr_u(isLoad, srcDst, ARMRegisters::S0, offset | transferFlag);
         return;
     }
     if (offset <= 0 && offset >= -0xfff) {
         add_r(ARMRegisters::S0, base, op2);
-        dtr_d(isLoad, srcDst, ARMRegisters::S0, -offset);
+        dtr_d(isLoad, srcDst, ARMRegisters::S0, (-offset & 0xfff) | transferFlag);
         return;
     }
 
     ldr_un_imm(ARMRegisters::S0, offset);
     add_r(ARMRegisters::S0, ARMRegisters::S0, op2);
-    dtr_ur(isLoad, srcDst, base, ARMRegisters::S0);
+    dtr_ur(isLoad, srcDst, base, ARMRegisters::S0 | transferFlag);
 }
 
 void ARMAssembler::doubleTransfer(bool isLoad, FPRegisterID srcDst, RegisterID base, int32_t offset)
 {
-    if (offset & 0x3) {
+    // VFP cannot directly access memory that is not four-byte-aligned
+    if (!(offset & 0x3)) {
         if (offset <= 0x3ff && offset >= 0) {
             fdtr_u(isLoad, srcDst, base, offset >> 2);
             return;
@@ -343,23 +344,24 @@ void ARMAssembler::doubleTransfer(bool isLoad, FPRegisterID srcDst, RegisterID b
     fdtr_u(isLoad, srcDst, ARMRegisters::S0, 0);
 }
 
-void* ARMAssembler::executableCopy(ExecutablePool* allocator)
+PassRefPtr<ExecutableMemoryHandle> ARMAssembler::executableCopy(JSGlobalData& globalData, void* ownerUID, JITCompilationEffort effort)
 {
     // 64-bit alignment is required for next constant pool and JIT code as well
     m_buffer.flushWithoutBarrier(true);
-    if (m_buffer.uncheckedSize() & 0x7)
+    if (!m_buffer.isAligned(8))
         bkpt(0);
 
-    char* data = reinterpret_cast<char*>(m_buffer.executableCopy(allocator));
+    RefPtr<ExecutableMemoryHandle> result = m_buffer.executableCopy(globalData, ownerUID, effort);
+    char* data = reinterpret_cast<char*>(result->start());
 
     for (Jumps::Iterator iter = m_jumps.begin(); iter != m_jumps.end(); ++iter) {
         // The last bit is set if the constant must be placed on constant pool.
-        int pos = (*iter) & (~0x1);
-        ARMWord* ldrAddr = reinterpret_cast<ARMWord*>(data + pos);
+        int pos = (iter->m_offset) & (~0x1);
+        ARMWord* ldrAddr = reinterpret_cast_ptr<ARMWord*>(data + pos);
         ARMWord* addr = getLdrImmAddress(ldrAddr);
         if (*addr != InvalidBranchTarget) {
-            if (!(*iter & 1)) {
-                int diff = reinterpret_cast<ARMWord*>(data + *addr) - (ldrAddr + DefaultPrefetching);
+            if (!(iter->m_offset & 1)) {
+                int diff = reinterpret_cast_ptr<ARMWord*>(data + *addr) - (ldrAddr + DefaultPrefetching);
 
                 if ((diff <= BOFFSET_MAX && diff >= BOFFSET_MIN)) {
                     *ldrAddr = B | getConditionalField(*ldrAddr) | (diff & BRANCH_MASK);
@@ -370,9 +372,26 @@ void* ARMAssembler::executableCopy(ExecutablePool* allocator)
         }
     }
 
-    return data;
+    return result;
+}
+
+#if OS(LINUX) && COMPILER(RVCT)
+
+__asm void ARMAssembler::cacheFlush(void* code, size_t size)
+{
+    ARM
+    push {r7}
+    add r1, r1, r0
+    mov r7, #0xf0000
+    add r7, r7, #0x2
+    mov r2, #0x0
+    svc #0x0
+    pop {r7}
+    bx lr
 }
 
+#endif
+
 } // namespace JSC
 
 #endif // ENABLE(ASSEMBLER) && CPU(ARM_TRADITIONAL)