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| author | Jiaxun Yang <jiaxun.yang@flygoat.com> | 2020-05-12 12:40:05 +0800 |
|---|---|---|
| committer | Moonchild <moonchild@palemoon.org> | 2020-05-20 14:00:08 +0000 |
| commit | fa1628f76785e18240c7c7aca63b99d490879461 (patch) | |
| tree | 7c439fa2813fe06257385b220c33d78b103f43ed /js/src/jit/mips-shared/MacroAssembler-mips-shared.cpp | |
| parent | 0136960ec0658091ff514b71b35ed2720e28254e (diff) | |
| download | UXP-fa1628f76785e18240c7c7aca63b99d490879461.tar UXP-fa1628f76785e18240c7c7aca63b99d490879461.tar.gz UXP-fa1628f76785e18240c7c7aca63b99d490879461.tar.lz UXP-fa1628f76785e18240c7c7aca63b99d490879461.tar.xz UXP-fa1628f76785e18240c7c7aca63b99d490879461.zip | |
Bug 1323136 - wasm: MIPS: Do bounds check in 32-bit
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 | 11 |
1 files changed, 11 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 18997e542..658cafd36 100644 --- a/js/src/jit/mips-shared/MacroAssembler-mips-shared.cpp +++ b/js/src/jit/mips-shared/MacroAssembler-mips-shared.cpp @@ -39,6 +39,17 @@ MacroAssemblerMIPSShared::ma_li(Register dest, Imm32 imm) } } +// This method generates lui and ori instruction pair that can be modified by +// UpdateLuiOriValue, either during compilation (eg. Assembler::bind), or +// during execution (eg. jit::PatchJump). +void +MacroAssemblerMIPSShared::ma_liPatchable(Register dest, Imm32 imm) +{ + m_buffer.ensureSpace(2 * sizeof(uint32_t)); + as_lui(dest, Imm16::Upper(imm).encode()); + as_ori(dest, dest, Imm16::Lower(imm).encode()); +} + // Shifts void MacroAssemblerMIPSShared::ma_sll(Register rd, Register rt, Imm32 shift) |