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ABI: Switch to paired load/stores of floats too

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This commit is contained in:
Henrik Rydgård 2017-01-27 14:18:29 +01:00
parent e1bae9aa67
commit c4bac2d379
2 changed files with 19 additions and 16 deletions
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33
Common/Arm64Emitter.cpp
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@ -3592,23 +3592,20 @@ void ARM64FloatEmitter::ABI_PushRegisters(uint32_t registers, uint32_t fp_regist
m_emit->STP(INDEX_SIGNED, gprs[i*2], gprs[i*2+1], X29, offset);
offset += 16;
}
// Do the straggler.
if (num_gprs & 1) {
m_emit->STR(INDEX_UNSIGNED, gprs[num_gprs - 1], X29, offset);
offset += 16;
}
if (num_fprs) {
// OK, and now for the FPRs. Let's start simple.
//m_emit->ADD(X29, X29, offset);
//offset = 0;
for (int i = 0; i < num_fprs; i++) {
STR(64, INDEX_UNSIGNED, fprs[i], X29, offset);
offset += 8;
}
// Since we walked X29 away, reset it.
m_emit->MOVfromSP(X29); // Set new frame pointer
for (int i = 0; i < num_fprs / 2; i++) {
STP(64, INDEX_SIGNED, fprs[i * 2], fprs[i * 2 + 1], SP, offset);
offset += 16;
}
if (num_fprs & 1) {
STR(64, INDEX_UNSIGNED, fprs[num_fprs - 1], X29, offset);
offset += 16;
}
// Now offset should be == stack_size.
}
void ARM64FloatEmitter::ABI_PopRegisters(uint32_t registers, uint32_t fp_registers) {
@ -3624,7 +3621,7 @@ void ARM64FloatEmitter::ABI_PopRegisters(uint32_t registers, uint32_t fp_registe
fprs[num_fprs++] = (ARM64Reg)(D0 + i);
}
u32 stack_size = ROUND_UP((num_gprs + 2) * 8, 16) + num_fprs * 8;
u32 stack_size = 16 + ROUND_UP(num_gprs * 8, 16) + ROUND_UP(num_fprs * 8, 16);
// SP points to the bottom. We're gonna walk it upwards.
// Reload FP, LR.
@ -3641,10 +3638,16 @@ void ARM64FloatEmitter::ABI_PopRegisters(uint32_t registers, uint32_t fp_registe
}
// Time for the FP regs.
for (int i = 0; i < num_fprs; i++) {
LDR(64, INDEX_UNSIGNED, fprs[i], SP, offset);
offset += 8;
for (int i = 0; i < num_fprs / 2; i++) {
LDP(64, INDEX_SIGNED, fprs[i * 2], fprs[i * 2 + 1], SP, offset);
offset += 16;
}
// Do the straggler.
if (num_fprs & 1) {
LDR(64, INDEX_UNSIGNED, fprs[num_fprs-1], SP, offset);
offset += 16;
}
// Now offset should be == stack_size.
// Restore the stack pointer.
m_emit->ADD(SP, SP, stack_size);

2
Core/MIPS/ARM64/Arm64Asm.cpp
View File

@ -35,7 +35,7 @@ using namespace Arm64Gen;
//static int temp32; // unused?
static const bool enableDebug = false;
static const bool enableDisasm = true;
static const bool enableDisasm = false;
//static bool enableStatistics = false; //unused?