Changeset 215237 in webkit for trunk/Source/JavaScriptCore/assembler

Timestamp:

Apr 11, 2017, 10:03:59 AM (8 years ago)

Author:

[email protected]

Message:

[jsc] Add missing MacroAssemblerMIPS::or32() implementation
​https://bugs.webkit.org/show_bug.cgi?id=169714

Patch by Guillaume Emont <​[email protected]> on 2017-04-11
Reviewed by Michael Catanzaro.

• assembler/MacroAssemblerMIPS.h:

(JSC::MacroAssemblerMIPS::or32):
Added or32(TrustedImm32, Address).

File:

• trunk/Source/JavaScriptCore/assembler/MacroAssemblerMIPS.h (modified) (1 diff)

trunk/Source/JavaScriptCore/assembler/MacroAssemblerMIPS.h

@@ -442 +442 @@
         m_assembler.orInsn(dataTempRegister, dataTempRegister, src);
         store32(dataTempRegister, dest.m_ptr);
+    }
+
+    void or32(TrustedImm32 imm, Address address)
+    {
+        if (address.offset >= -32768 && address.offset <= 32767
+            && !m_fixedWidth) {
+            /*
+              lw        dataTemp, offset(base)
+              li        immTemp, imm
+              or        dataTemp, dataTemp, immTemp
+              sw        dataTemp, offset(base)
+            */
+            m_assembler.lw(dataTempRegister, address.base, address.offset);
+            if (imm.m_value >= 0 && imm.m_value <= 65535 && !m_fixedWidth)
+                m_assembler.ori(dataTempRegister, dataTempRegister, imm.m_value);
+            else {
+                move(imm, immTempRegister);
+                m_assembler.orInsn(dataTempRegister, dataTempRegister, immTempRegister);
+            }
+            m_assembler.sw(dataTempRegister, address.base, address.offset);
+        } else {
+            /*
+              lui       addrTemp, (offset + 0x8000) >> 16
+              addu      addrTemp, addrTemp, base
+              lw        dataTemp, (offset & 0xffff)(addrTemp)
+              li        immtemp, imm
+              or        dataTemp, dataTemp, immTemp
+              sw        dataTemp, (offset & 0xffff)(addrTemp)
+            */
+            m_assembler.lui(addrTempRegister, (address.offset + 0x8000) >> 16);
+            m_assembler.addu(addrTempRegister, addrTempRegister, address.base);
+            m_assembler.lw(dataTempRegister, addrTempRegister, address.offset);
+
+            if (imm.m_value >= 0 && imm.m_value <= 65535 && !m_fixedWidth)
+                m_assembler.ori(dataTempRegister, dataTempRegister, imm.m_value);
+            else {
+                move(imm, immTempRegister);
+                m_assembler.orInsn(dataTempRegister, dataTempRegister, immTempRegister);
+            }
+            m_assembler.sw(dataTempRegister, addrTempRegister, address.offset);
+        }
     }