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| author | Jiaxun Yang <jiaxun.yang@flygoat.com> | 2020-05-12 12:40:08 +0800 |
|---|---|---|
| committer | Moonchild <moonchild@palemoon.org> | 2020-05-20 14:01:14 +0000 |
| commit | 61af6cc299cb40497a5a9f5b0c1221026e365cd5 (patch) | |
| tree | 7d4502201a1ea8c0de36438aea17a973fd8706df /js/src/jit/mips-shared/MacroAssembler-mips-shared.cpp | |
| parent | c3a21acaee65f9fde0f76b635ce906ca9c901889 (diff) | |
| download | UXP-61af6cc299cb40497a5a9f5b0c1221026e365cd5.tar UXP-61af6cc299cb40497a5a9f5b0c1221026e365cd5.tar.gz UXP-61af6cc299cb40497a5a9f5b0c1221026e365cd5.tar.lz UXP-61af6cc299cb40497a5a9f5b0c1221026e365cd5.tar.xz UXP-61af6cc299cb40497a5a9f5b0c1221026e365cd5.zip | |
Bug 1271968 - IonMonkey: MIPS: Merge MacroAssembler::ma_jal.
Tag: #1542
Diffstat (limited to 'js/src/jit/mips-shared/MacroAssembler-mips-shared.cpp')
| -rw-r--r-- | js/src/jit/mips-shared/MacroAssembler-mips-shared.cpp | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/js/src/jit/mips-shared/MacroAssembler-mips-shared.cpp b/js/src/jit/mips-shared/MacroAssembler-mips-shared.cpp index a8b53e67c..97660299a 100644 --- a/js/src/jit/mips-shared/MacroAssembler-mips-shared.cpp +++ b/js/src/jit/mips-shared/MacroAssembler-mips-shared.cpp @@ -727,6 +727,30 @@ MacroAssemblerMIPSShared::ma_b(wasm::TrapDesc target, JumpKind jumpKind) bindLater(&label, target); } +void +MacroAssemblerMIPSShared::ma_jal(Label* label) +{ + if (label->bound()) { + // Generate the mixed jump. + addMixedJump(nextOffset(), ImmPtr((void*)label->offset())); + as_jal(JOffImm26(0)); + as_nop(); + return; + } + + // Second word holds a pointer to the next branch in label's chain. + uint32_t nextInChain = label->used() ? label->offset() : LabelBase::INVALID_OFFSET; + + // Make the whole branch continous in the buffer. The '2' + // instructions are writing at below (contain delay slot). + m_buffer.ensureSpace(2 * sizeof(uint32_t)); + + BufferOffset bo = as_jal(JOffImm26(0)); + writeInst(nextInChain); + if (!oom()) + label->use(bo.getOffset()); +} + Assembler::Condition MacroAssemblerMIPSShared::ma_cmp(Register scratch, Register lhs, Register rhs, Condition c) { |