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MIPS: Save and restore callee-saved FP registers in cctest/ConvertDToI.

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Correctly save and restore FP registers in cctest/ConvertDToI to
avoid accidental register overwriting by the generated code.

Note: This failure is manifested only in R6 mode.

TEST=test/cctest/interpreter/test-interpreter
BUG=

Review URL: https://codereview.chromium.org/1337023002

Cr-Commit-Position: refs/heads/master@{#30700}
This commit is contained in:
akos.palfi 2015-09-11 08:31:08 -07:00 committed by Commit bot
parent d1ca012157
commit a795aa350f
2 changed files with 16 additions and 0 deletions
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8
test/cctest/test-code-stubs-mips.cc
View File

@ -62,6 +62,11 @@ ConvertDToIFunc MakeConvertDToIFuncTrampoline(Isolate* isolate,
// Save callee save registers.
__ MultiPush(kCalleeSaved | ra.bit());
// Save callee-saved FPU registers.
__ MultiPushFPU(kCalleeSavedFPU);
// Set up the reserved register for 0.0.
__ Move(kDoubleRegZero, 0.0);
// For softfp, move the input value into f12.
if (IsMipsSoftFloatABI) {
__ Move(f12, a0, a1);
@ -117,6 +122,9 @@ ConvertDToIFunc MakeConvertDToIFuncTrampoline(Isolate* isolate,
__ Branch(&ok, eq, v0, Operand(zero_reg));
__ bind(&ok);
// Restore callee-saved FPU registers.
__ MultiPopFPU(kCalleeSavedFPU);
// Restore callee save registers.
__ MultiPop(kCalleeSaved | ra.bit());

8
test/cctest/test-code-stubs-mips64.cc
View File

@ -62,6 +62,11 @@ ConvertDToIFunc MakeConvertDToIFuncTrampoline(Isolate* isolate,
// Save callee save registers.
__ MultiPush(kCalleeSaved | ra.bit());
// Save callee-saved FPU registers.
__ MultiPushFPU(kCalleeSavedFPU);
// Set up the reserved register for 0.0.
__ Move(kDoubleRegZero, 0.0);
// For softfp, move the input value into f12.
if (IsMipsSoftFloatABI) {
__ Move(f12, a0, a1);
@ -117,6 +122,9 @@ ConvertDToIFunc MakeConvertDToIFuncTrampoline(Isolate* isolate,
__ Branch(&ok, eq, v0, Operand(zero_reg));
__ bind(&ok);
// Restore callee-saved FPU registers.
__ MultiPopFPU(kCalleeSavedFPU);
// Restore callee save registers.
__ MultiPop(kCalleeSaved | ra.bit());