diff options
Diffstat (limited to 'js/src/jit/mips64/Assembler-mips64.cpp')
-rw-r--r-- | js/src/jit/mips64/Assembler-mips64.cpp | 82 |
1 files changed, 0 insertions, 82 deletions
diff --git a/js/src/jit/mips64/Assembler-mips64.cpp b/js/src/jit/mips64/Assembler-mips64.cpp index 6d76363090..a7254b8257 100644 --- a/js/src/jit/mips64/Assembler-mips64.cpp +++ b/js/src/jit/mips64/Assembler-mips64.cpp @@ -228,88 +228,6 @@ Assembler::Bind(uint8_t* rawCode, CodeOffset* label, const void* address) } } -void -Assembler::bind(InstImm* inst, uintptr_t branch, uintptr_t target) -{ - int64_t offset = target - branch; - - // Generate the patchable mixed jump for call. - if (inst->extractOpcode() == ((uint32_t)op_jal >> OpcodeShift)) { - addMixedJump(BufferOffset(branch), ImmPtr((void*)target)); - return; - } - - // If encoded offset is 4, then the jump must be short - if (BOffImm16(inst[0]).decode() == 4) { - MOZ_ASSERT(BOffImm16::IsInRange(offset)); - inst[0].setBOffImm16(BOffImm16(offset)); - inst[1].makeNop(); - return; - } - - if (BOffImm16::IsInRange(offset)) { - inst[0].setBOffImm16(BOffImm16(offset)); - inst[1].makeNop(); - - return; - } - - addMixedJump(BufferOffset(branch), ImmPtr((void*)target)); -} - -void -Assembler::bind(RepatchLabel* label) -{ - BufferOffset dest = nextOffset(); - if (label->used() && !oom()) { - // If the label has a use, then change this use to refer to - // the bound label; - BufferOffset b(label->offset()); - InstImm* inst = (InstImm*)editSrc(b); - InstImm inst_beq = InstImm(op_beq, zero, zero, BOffImm16(0)); - uint64_t offset = dest.getOffset() - label->offset(); - - // If first instruction is j, then this is a mixed jump. - // If second instruction is lui, then this is a loop backedge. - if (inst[0].extractOpcode() == (uint32_t(op_j) >> OpcodeShift)) { - // For unconditional mixed branches generated by jumpWithPatch - addMixedJump(b, ImmPtr((void*)dest.getOffset()), MixedJumpPatch::PATCHABLE); - } else if (inst[1].extractOpcode() == (uint32_t(op_lui) >> OpcodeShift) || - BOffImm16::IsInRange(offset)) - { - // Handle code produced by: - // backedgeJump - MOZ_ASSERT(BOffImm16::IsInRange(offset)); - MOZ_ASSERT(inst[0].extractOpcode() == (uint32_t(op_beq) >> OpcodeShift) || - inst[0].extractOpcode() == (uint32_t(op_bne) >> OpcodeShift) || - inst[0].extractOpcode() == (uint32_t(op_blez) >> OpcodeShift) || - inst[0].extractOpcode() == (uint32_t(op_bgtz) >> OpcodeShift)); - inst[0].setBOffImm16(BOffImm16(offset)); - } else if (inst[0].encode() == inst_beq.encode()) { - // Handle open mixed unconditional jumps created by - // MacroAssemblerMIPSShared::ma_b(..., wasm::Trap, ...). - // We need to add it to mixed jumps array here. - // See MacroAssemblerMIPS64::branchWithCode(). - MOZ_ASSERT(inst[1].encode() == NopInst); - addMixedJump(b, ImmPtr((void*)dest.getOffset()), MixedJumpPatch::PATCHABLE); - inst[0] = InstJump(op_j, JOffImm26(0)).encode(); - } else { - // Handle open mixed conditional jumps created by - // MacroAssemblerMIPSShared::ma_b(..., wasm::Trap, ...). - inst[0] = invertBranch(inst[0], BOffImm16(4 * sizeof(uint32_t))); - // No need for a "nop" here because we can clobber scratch. - // We need to add it to mixed jumps array here. - // See MacroAssemblerMIPS64::branchWithCode(). - MOZ_ASSERT(inst[1].encode() == NopInst); - MOZ_ASSERT(inst[2].encode() == NopInst); - MOZ_ASSERT(inst[3].encode() == NopInst); - addMixedJump(b, ImmPtr((void*)dest.getOffset()), MixedJumpPatch::PATCHABLE); - inst[2] = InstJump(op_j, JOffImm26(0)).encode(); - } - } - label->bind(dest.getOffset()); -} - uint32_t Assembler::PatchWrite_NearCallSize() { |