diff options
Diffstat (limited to 'Source/JavaScriptCore/assembler/SH4Assembler.h')
| -rw-r--r-- | Source/JavaScriptCore/assembler/SH4Assembler.h | 28 |
1 files changed, 27 insertions, 1 deletions
diff --git a/Source/JavaScriptCore/assembler/SH4Assembler.h b/Source/JavaScriptCore/assembler/SH4Assembler.h index 1cf96b735..11e954cad 100644 --- a/Source/JavaScriptCore/assembler/SH4Assembler.h +++ b/Source/JavaScriptCore/assembler/SH4Assembler.h @@ -326,6 +326,10 @@ public: padForAlign32 = 0x00090009, }; + enum JumpType { JumpFar, + JumpNear + }; + SH4Assembler() { m_claimscratchReg = 0x0; @@ -1188,6 +1192,13 @@ public: return label; } + void extraInstrForBranch(RegisterID dst) + { + loadConstantUnReusable(0x0, dst); + nop(); + nop(); + } + AssemblerLabel jmp(RegisterID dst) { jmpReg(dst); @@ -1215,6 +1226,13 @@ public: return label; } + AssemblerLabel bra() + { + AssemblerLabel label = m_buffer.label(); + branch(BRA_OPCODE, 0); + return label; + } + void ret() { m_buffer.ensureSpace(maxInstructionSize + 2); @@ -1424,7 +1442,7 @@ public: // Linking & patching - void linkJump(AssemblerLabel from, AssemblerLabel to) + void linkJump(AssemblerLabel from, AssemblerLabel to, JumpType type = JumpFar) { ASSERT(to.isSet()); ASSERT(from.isSet()); @@ -1433,6 +1451,14 @@ public: uint16_t instruction = *instructionPtr; int offsetBits; + if (type == JumpNear) { + ASSERT((instruction == BT_OPCODE) || (instruction == BF_OPCODE) || (instruction == BRA_OPCODE)); + int offset = (codeSize() - from.m_offset) - 4; + *instructionPtr++ = instruction | (offset >> 1); + printInstr(*instructionPtr, from.m_offset + 2); + return; + } + if (((instruction & 0xff00) == BT_OPCODE) || ((instruction & 0xff00) == BF_OPCODE)) { /* BT label => BF 2 nop LDR reg |