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Implementation of compilation callback in PPC ELF32

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llvm-svn: 37340
This commit is contained in:
Nicolas Geoffray 2007-05-29 16:33:18 +00:00
parent dc15e2779b
commit fff14eecb5
1 changed files with 32 additions and 31 deletions
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63
lib/Target/PowerPC/PPCJITInfo.cpp
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@ -14,6 +14,7 @@
#define DEBUG_TYPE "jit"
#include "PPCJITInfo.h"
#include "PPCRelocations.h"
#include "PPCTargetMachine.h"
#include "llvm/CodeGen/MachineCodeEmitter.h"
#include "llvm/Config/alloca.h"
#include "llvm/Support/Debug.h"
@ -147,56 +148,52 @@ asm(
".align 2\n"
".globl PPC32CompilationCallback\n"
"PPC32CompilationCallback:\n"
// Make space for 8 ints r[3-10] and 13 doubles f[1-13] and the
// Make space for 8 ints r[3-10] and 8 doubles f[1-8] and the
// FIXME: need to save v[0-19] for altivec?
// FIXME: could shrink frame
// Set up a proper stack frame
// FIXME Layout
// PowerPC64 ABI linkage - 24 bytes
// parameters - 32 bytes
// 13 double registers - 104 bytes
// 8 double registers - 64 bytes
// 8 int registers - 32 bytes
"mflr 0\n"
"stw 0, 4(1)\n"
"stwu 1, -180(1)\n"
"stwu 1, -104(1)\n"
// Save all int arg registers
"stw 10, 176(1)\n" "stw 9, 172(1)\n"
"stw 8, 168(1)\n" "stw 7, 164(1)\n"
"stw 6, 160(1)\n" "stw 5, 156(1)\n"
"stw 4, 152(1)\n" "stw 3, 148(1)\n"
"stw 10, 100(1)\n" "stw 9, 96(1)\n"
"stw 8, 92(1)\n" "stw 7, 88(1)\n"
"stw 6, 84(1)\n" "stw 5, 80(1)\n"
"stw 4, 76(1)\n" "stw 3, 72(1)\n"
// Save all call-clobbered FP regs.
"stfd 10, 144(1)\n"
"stfd 9, 136(1)\n" "stfd 8, 128(1)\n"
"stfd 7, 120(1)\n" "stfd 6, 112(1)\n"
"stfd 5, 104(1)\n" "stfd 4, 96(1)\n"
"stfd 3, 88(1)\n" "stfd 2, 80(1)\n"
"stfd 1, 72(1)\n"
"stfd 8, 64(1)\n"
"stfd 7, 56(1)\n" "stfd 6, 48(1)\n"
"stfd 5, 40(1)\n" "stfd 4, 32(1)\n"
"stfd 3, 24(1)\n" "stfd 2, 16(1)\n"
"stfd 1, 8(1)\n"
// Arguments to Compilation Callback:
// r3 - our lr (address of the call instruction in stub plus 4)
// r4 - stub's lr (address of instruction that called the stub plus 4)
// r5 - is64Bit - always 0.
"mr 3, 0\n"
"lwz 11, 180(1)\n" // stub's frame
"lwz 4, 4(11)\n" // stub's lr
"lwz 5, 104(1)\n" // stub's frame
"lwz 4, 4(5)\n" // stub's lr
"li 5, 0\n" // 0 == 32 bit
"bl PPCCompilationCallbackC\n"
"mtctr 3\n"
// Restore all int arg registers
"lwz 10, 176(1)\n" "lwz 9, 172(1)\n"
"lwz 8, 168(1)\n" "lwz 7, 164(1)\n"
"lwz 6, 160(1)\n" "lwz 5, 156(1)\n"
"lwz 4, 152(1)\n" "lwz 3, 148(1)\n"
"lwz 10, 100(1)\n" "lwz 9, 96(1)\n"
"lwz 8, 92(1)\n" "lwz 7, 88(1)\n"
"lwz 6, 84(1)\n" "lwz 5, 80(1)\n"
"lwz 4, 76(1)\n" "lwz 3, 72(1)\n"
// Restore all FP arg registers
"lfd 10, 144(1)\n"
"lfd 9, 136(1)\n" "lfd 8, 128(1)\n"
"lfd 7, 120(1)\n" "lfd 6, 112(1)\n"
"lfd 5, 104(1)\n" "lfd 4, 96(1)\n"
"lfd 3, 88(1)\n" "lfd 2, 80(1)\n"
"lfd 1, 72(1)\n"
"lfd 8, 64(1)\n"
"lfd 7, 56(1)\n" "lfd 6, 48(1)\n"
"lfd 5, 40(1)\n" "lfd 4, 32(1)\n"
"lfd 3, 24(1)\n" "lfd 2, 16(1)\n"
"lfd 1, 8(1)\n"
// Pop 3 frames off the stack and branch to target
"lwz 1, 184(1)\n"
"lwz 11, 4(1)\n"
"mtlr 11\n"
"lwz 1, 104(1)\n"
"lwz 0, 4(1)\n"
"mtlr 0\n"
"bctr\n"
);
#else
@ -350,10 +347,14 @@ void *PPCJITInfo::emitFunctionStub(void *Fn, MachineCodeEmitter &MCE) {
MCE.emitWordBE(0xf821ffb1); // stdu r1,-80(r1)
MCE.emitWordBE(0x7d6802a6); // mflr r11
MCE.emitWordBE(0xf9610060); // std r11, 96(r1)
} else {
} else if (TM.getSubtargetImpl()->isMachoABI()){
MCE.emitWordBE(0x9421ffe0); // stwu r1,-32(r1)
MCE.emitWordBE(0x7d6802a6); // mflr r11
MCE.emitWordBE(0x91610028); // stw r11, 40(r1)
} else {
MCE.emitWordBE(0x9421ffe0); // stwu r1,-32(r1)
MCE.emitWordBE(0x7d6802a6); // mflr r11
MCE.emitWordBE(0x91610024); // stw r11, 36(r1)
}
intptr_t Addr = (intptr_t)MCE.getCurrentPCValue();
MCE.emitWordBE(0);