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[AArch64] Implement MOVI and ORR(imm) in the NEON emitter.

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This commit is contained in:
Ryan Houdek
2015-08-23 15:34:53 -05:00
parent 73067b1ef1
commit 4fa23abbe1
2 changed files with 106 additions and 0 deletions
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101
Source/Core/Common/Arm64Emitter.cpp
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@ -2505,6 +2505,23 @@ void ARM64FloatEmitter::EncodeLoadStoreRegisterOffset(u32 size, bool load, ARM64
Rm.GetData() | (1 << 11) | (Rn << 5) | Rt);
}
void ARM64FloatEmitter::EncodeModImm(bool Q, u8 op, u8 cmode, u8 o2, ARM64Reg Rd, u8 abcdefgh)
{
union
{
u8 hex;
struct
{
unsigned defgh : 5;
unsigned abc : 3;
};
} v;
v.hex = abcdefgh;
Rd = DecodeReg(Rd);
Write32((Q << 30) | (op << 29) | (0xF << 24) | (v.abc << 16) | (cmode << 12) | \
(o2 << 11) | (1 << 10) | (v.defgh << 5) | Rd);
}
void ARM64FloatEmitter::LDR(u8 size, IndexType type, ARM64Reg Rt, ARM64Reg Rn, s32 imm)
{
EmitLoadStoreImmediate(size, 1, type, Rt, Rn, imm);
@ -3630,6 +3647,90 @@ void ARM64FloatEmitter::FMLA(u8 size, ARM64Reg Rd, ARM64Reg Rn, ARM64Reg Rm, u8
EmitVectorxElement(0, 2 | (size >> 6), L, 1, H, Rd, Rn, Rm);
}
// Modified Immediate
void ARM64FloatEmitter::MOVI(u8 size, ARM64Reg Rd, u64 imm, u8 shift)
{
bool Q = IsQuad(Rd);
u8 cmode = 0;
u8 op = 0;
u8 abcdefgh = imm & 0xFF;
if (size == 8)
{
_assert_msg_(DYNA_REC, shift == 0, "%s(size8) doesn't support shift!", __FUNCTION__);
_assert_msg_(DYNA_REC, !(imm & ~0xFFULL), "%s(size8) only supports 8bit values!", __FUNCTION__);
}
else if (size == 16)
{
_assert_msg_(DYNA_REC, shift == 0 || shift == 8, "%s(size16) only supports shift of {0, 8}!", __FUNCTION__);
_assert_msg_(DYNA_REC, !(imm & ~0xFFULL), "%s(size16) only supports 8bit values!", __FUNCTION__);
if (shift == 8)
cmode |= 2;
}
else if (size == 32)
{
_assert_msg_(DYNA_REC,
shift == 0 || shift == 8 || shift == 16 || shift == 24,
"%s(size32) only supports shift of {0, 8, 16, 24}!", __FUNCTION__);
// XXX: Implement support for MOVI - shifting ones variant
_assert_msg_(DYNA_REC, !(imm & ~0xFFULL), "%s(size32) only supports 8bit values!", __FUNCTION__);
switch (shift)
{
case 8: cmode |= 2; break;
case 16: cmode |= 4; break;
case 24: cmode |= 6; break;
default: break;
}
}
else // 64
{
_assert_msg_(DYNA_REC, shift == 0, "%s(size64) doesn't support shift!", __FUNCTION__);
op = 1;
cmode = 0xE;
abcdefgh = 0;
for (int i = 0; i < 8; ++i)
{
u8 tmp = (imm >> (i << 3)) & 0xFF;
_assert_msg_(DYNA_REC, tmp == 0xFF || tmp == 0, "%s(size64) Invalid immediate!", __FUNCTION__);
if (tmp == 0xFF)
abcdefgh |= (1 << i);
}
}
EncodeModImm(Q, op, cmode, 0, Rd, abcdefgh);
}
void ARM64FloatEmitter::BIC(u8 size, ARM64Reg Rd, u8 imm, u8 shift)
{
bool Q = IsQuad(Rd);
u8 cmode = 1;
u8 op = 1;
if (size == 16)
{
_assert_msg_(DYNA_REC, shift == 0 || shift == 8, "%s(size16) only supports shift of {0, 8}!", __FUNCTION__);
if (shift == 8)
cmode |= 2;
}
else if (size == 32)
{
_assert_msg_(DYNA_REC,
shift == 0 || shift == 8 || shift == 16 || shift == 24,
"%s(size32) only supports shift of {0, 8, 16, 24}!", __FUNCTION__);
// XXX: Implement support for MOVI - shifting ones variant
switch (shift)
{
case 8: cmode |= 2; break;
case 16: cmode |= 4; break;
case 24: cmode |= 6; break;
default: break;
}
}
else
_assert_msg_(DYNA_REC, false, "%s only supports size of {16, 32}!", __FUNCTION__);
EncodeModImm(Q, op, cmode, 0, Rd, imm);
}
void ARM64FloatEmitter::ABI_PushRegisters(BitSet32 registers, ARM64Reg tmp)
{
bool bundled_loadstore = false;