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| author | janekptacijarabaci <janekptacijarabaci@seznam.cz> | 2018-03-24 12:28:12 +0100 |
|---|---|---|
| committer | janekptacijarabaci <janekptacijarabaci@seznam.cz> | 2018-03-24 12:28:12 +0100 |
| commit | fdedd57c60d35bed3e6cde12084b7abe08153ed3 (patch) | |
| tree | 5cba1b96e8d02f657d64f1ea43421d2af044e3c3 /js/src/jsopcode.cpp | |
| parent | 1ea1ed151571a523d1c8016dcd314e12238cd785 (diff) | |
| download | UXP-fdedd57c60d35bed3e6cde12084b7abe08153ed3.tar UXP-fdedd57c60d35bed3e6cde12084b7abe08153ed3.tar.gz UXP-fdedd57c60d35bed3e6cde12084b7abe08153ed3.tar.lz UXP-fdedd57c60d35bed3e6cde12084b7abe08153ed3.tar.xz UXP-fdedd57c60d35bed3e6cde12084b7abe08153ed3.zip | |
Bug 1147371: Implement JSOP_PICK and JSOP_UNPICK in the expression decompiler
Issue #74
Diffstat (limited to 'js/src/jsopcode.cpp')
| -rw-r--r-- | js/src/jsopcode.cpp | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/js/src/jsopcode.cpp b/js/src/jsopcode.cpp index 31bbfb471..eadbca4f8 100644 --- a/js/src/jsopcode.cpp +++ b/js/src/jsopcode.cpp @@ -460,6 +460,34 @@ BytecodeParser::simulateOp(JSOp op, uint32_t offset, uint32_t* offsetStack, uint offsetStack[stackDepth] = tmp; } break; + + case JSOP_PICK: { + jsbytecode* pc = script_->offsetToPC(offset); + unsigned n = GET_UINT8(pc); + MOZ_ASSERT(ndefs == n + 1); + if (offsetStack) { + uint32_t top = stackDepth + n; + uint32_t tmp = offsetStack[stackDepth]; + for (uint32_t i = stackDepth; i < top; i++) + offsetStack[i] = offsetStack[i + 1]; + offsetStack[top] = tmp; + } + break; + } + + case JSOP_UNPICK: { + jsbytecode* pc = script_->offsetToPC(offset); + unsigned n = GET_UINT8(pc); + MOZ_ASSERT(ndefs == n + 1); + if (offsetStack) { + uint32_t top = stackDepth + n; + uint32_t tmp = offsetStack[top]; + for (uint32_t i = top; i > stackDepth; i--) + offsetStack[i] = offsetStack[i - 1]; + offsetStack[stackDepth] = tmp; + } + break; + } } stackDepth += ndefs; return stackDepth; |