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author | Chris Lattner <sabre@nondot.org> | 2004-11-23 06:27:02 +0000 |
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committer | Chris Lattner <sabre@nondot.org> | 2004-11-23 06:27:02 +0000 |
commit | 7c83dc2714d9d92068cc2c742e0baa90a3fd0363 (patch) | |
tree | a720d0c255fca0261d2c4b67b8120674cbb87029 /lib/Target/PowerPC/PPCJITInfo.cpp | |
parent | 64729d064a98f5ee7681c0c8cc71f7681d0b3fb3 (diff) | |
download | external_llvm-7c83dc2714d9d92068cc2c742e0baa90a3fd0363.zip external_llvm-7c83dc2714d9d92068cc2c742e0baa90a3fd0363.tar.gz external_llvm-7c83dc2714d9d92068cc2c742e0baa90a3fd0363.tar.bz2 |
Implement the stub needed to get into compilation callback.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18147 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/PowerPC/PPCJITInfo.cpp')
-rw-r--r-- | lib/Target/PowerPC/PPCJITInfo.cpp | 19 |
1 files changed, 14 insertions, 5 deletions
diff --git a/lib/Target/PowerPC/PPCJITInfo.cpp b/lib/Target/PowerPC/PPCJITInfo.cpp index b86ff16..9bae398 100644 --- a/lib/Target/PowerPC/PPCJITInfo.cpp +++ b/lib/Target/PowerPC/PPCJITInfo.cpp @@ -45,7 +45,7 @@ PPC32JITInfo::getLazyResolverFunction(JITCompilerFn Fn) { return CompilationCallback; } -static void EmitBranchToAt(void *At, void *To) { +static void EmitBranchToAt(void *At, void *To, bool isCall) { intptr_t Addr = (intptr_t)To; // FIXME: should special case the short branch case. @@ -54,7 +54,7 @@ static void EmitBranchToAt(void *At, void *To) { AtI[0] = BUILD_LIS(12, Addr >> 16); // lis r12, hi16(address) AtI[1] = BUILD_ORI(12, 12, Addr); // ori r12, r12, low16(address) AtI[2] = BUILD_MTCTR(12); // mtctr r12 - AtI[3] = BUILD_BCTR(0); // bctr + AtI[3] = BUILD_BCTR(isCall); // bctr/bctrl } void *PPC32JITInfo::emitFunctionStub(void *Fn, MachineCodeEmitter &MCE) { @@ -67,11 +67,20 @@ void *PPC32JITInfo::emitFunctionStub(void *Fn, MachineCodeEmitter &MCE) { MCE.emitWord(0); MCE.emitWord(0); MCE.emitWord(0); - EmitBranchToAt(Addr, Fn); + EmitBranchToAt(Addr, Fn, false); return MCE.finishFunctionStub(0); } - MCE.startFunctionStub(4*4); + MCE.startFunctionStub(4*7); + MCE.emitWord(0x9421ffe0); // stwu r1,-32(r1) + MCE.emitWord(0x7d6802a6); // mflr r11 + MCE.emitWord(0x91610028); // stw r11, 40(r1) + void *Addr = (void*)(intptr_t)MCE.getCurrentPCValue(); + MCE.emitWord(0); + MCE.emitWord(0); + MCE.emitWord(0); + MCE.emitWord(0); + EmitBranchToAt(Addr, Fn, true/*is call*/); return MCE.finishFunctionStub(0); } @@ -113,5 +122,5 @@ void PPC32JITInfo::relocate(void *Function, MachineRelocation *MR, } void PPC32JITInfo::replaceMachineCodeForFunction(void *Old, void *New) { - EmitBranchToAt(Old, New); + EmitBranchToAt(Old, New, false); } |