#include "llvm/Support/raw_ostream.h"
#include <stdio.h>
-#define SRC_BYTE_COUNT 11
-#define DST_BYTE_COUNT 5
-
using namespace llvm;
namespace {
SmallVectorImpl<MCFixup> &Fixups) const;
private:
- void EmitALUInstr(const MCInst &MI, SmallVectorImpl<MCFixup> &Fixups,
- raw_ostream &OS) const;
- void EmitSrc(const MCInst &MI, unsigned OpIdx, raw_ostream &OS) const;
- void EmitSrcISA(const MCInst &MI, unsigned RegOpIdx, unsigned SelOpIdx,
- raw_ostream &OS) const;
- void EmitDst(const MCInst &MI, raw_ostream &OS) const;
- void EmitFCInstr(const MCInst &MI, raw_ostream &OS) const;
-
- void EmitNullBytes(unsigned int byteCount, raw_ostream &OS) const;
-
void EmitByte(unsigned int byte, raw_ostream &OS) const;
- void EmitTwoBytes(uint32_t bytes, raw_ostream &OS) const;
-
void Emit(uint32_t value, raw_ostream &OS) const;
void Emit(uint64_t value, raw_ostream &OS) const;
unsigned getHWRegChan(unsigned reg) const;
unsigned getHWReg(unsigned regNo) const;
- bool isFCOp(unsigned opcode) const;
- bool isTexOp(unsigned opcode) const;
- bool isFlagSet(const MCInst &MI, unsigned Operand, unsigned Flag) const;
-
};
} // End anonymous namespace
void R600MCCodeEmitter::EncodeInstruction(const MCInst &MI, raw_ostream &OS,
SmallVectorImpl<MCFixup> &Fixups) const {
- if (isFCOp(MI.getOpcode())){
- EmitFCInstr(MI, OS);
- } else if (MI.getOpcode() == AMDGPU::RETURN ||
+ const MCInstrDesc &Desc = MCII.get(MI.getOpcode());
+ if (MI.getOpcode() == AMDGPU::RETURN ||
MI.getOpcode() == AMDGPU::FETCH_CLAUSE ||
MI.getOpcode() == AMDGPU::ALU_CLAUSE ||
MI.getOpcode() == AMDGPU::BUNDLE ||
MI.getOpcode() == AMDGPU::KILL) {
return;
- } else {
- switch(MI.getOpcode()) {
- case AMDGPU::RAT_WRITE_CACHELESS_32_eg:
- case AMDGPU::RAT_WRITE_CACHELESS_128_eg: {
- uint64_t inst = getBinaryCodeForInstr(MI, Fixups);
- Emit(inst, OS);
- break;
- }
- case AMDGPU::CONSTANT_LOAD_eg:
- case AMDGPU::VTX_READ_PARAM_8_eg:
- case AMDGPU::VTX_READ_PARAM_16_eg:
- case AMDGPU::VTX_READ_PARAM_32_eg:
- case AMDGPU::VTX_READ_PARAM_128_eg:
- case AMDGPU::VTX_READ_GLOBAL_8_eg:
- case AMDGPU::VTX_READ_GLOBAL_32_eg:
- case AMDGPU::VTX_READ_GLOBAL_128_eg:
- case AMDGPU::TEX_VTX_CONSTBUF:
- case AMDGPU::TEX_VTX_TEXBUF : {
- uint64_t InstWord01 = getBinaryCodeForInstr(MI, Fixups);
- uint32_t InstWord2 = MI.getOperand(2).getImm(); // Offset
- InstWord2 |= 1 << 19;
-
- Emit(InstWord01, OS);
- Emit(InstWord2, OS);
- Emit((u_int32_t) 0, OS);
- break;
- }
- case AMDGPU::TEX_LD:
- case AMDGPU::TEX_GET_TEXTURE_RESINFO:
- case AMDGPU::TEX_SAMPLE:
- case AMDGPU::TEX_SAMPLE_C:
- case AMDGPU::TEX_SAMPLE_L:
- case AMDGPU::TEX_SAMPLE_C_L:
- case AMDGPU::TEX_SAMPLE_LB:
- case AMDGPU::TEX_SAMPLE_C_LB:
- case AMDGPU::TEX_SAMPLE_G:
- case AMDGPU::TEX_SAMPLE_C_G:
- case AMDGPU::TEX_GET_GRADIENTS_H:
- case AMDGPU::TEX_GET_GRADIENTS_V:
- case AMDGPU::TEX_SET_GRADIENTS_H:
- case AMDGPU::TEX_SET_GRADIENTS_V: {
- unsigned Opcode = MI.getOpcode();
- bool HasOffsets = (Opcode == AMDGPU::TEX_LD);
- unsigned OpOffset = HasOffsets ? 3 : 0;
- int64_t Sampler = MI.getOperand(OpOffset + 3).getImm();
- int64_t TextureType = MI.getOperand(OpOffset + 4).getImm();
-
- uint32_t SrcSelect[4] = {0, 1, 2, 3};
- uint32_t Offsets[3] = {0, 0, 0};
- uint64_t CoordType[4] = {1, 1, 1, 1};
-
- if (HasOffsets)
- for (unsigned i = 0; i < 3; i++) {
- int SignedOffset = MI.getOperand(i + 2).getImm();
- Offsets[i] = (SignedOffset & 0x1F);
- }
-
-
- if (TextureType == TEXTURE_RECT ||
- TextureType == TEXTURE_SHADOWRECT) {
- CoordType[ELEMENT_X] = 0;
- CoordType[ELEMENT_Y] = 0;
- }
-
- if (TextureType == TEXTURE_1D_ARRAY ||
- TextureType == TEXTURE_SHADOW1D_ARRAY) {
- if (Opcode == AMDGPU::TEX_SAMPLE_C_L ||
- Opcode == AMDGPU::TEX_SAMPLE_C_LB) {
- CoordType[ELEMENT_Y] = 0;
- } else {
- CoordType[ELEMENT_Z] = 0;
- SrcSelect[ELEMENT_Z] = ELEMENT_Y;
- }
- } else if (TextureType == TEXTURE_2D_ARRAY ||
- TextureType == TEXTURE_SHADOW2D_ARRAY) {
- CoordType[ELEMENT_Z] = 0;
- }
-
-
- if ((TextureType == TEXTURE_SHADOW1D ||
- TextureType == TEXTURE_SHADOW2D ||
- TextureType == TEXTURE_SHADOWRECT ||
- TextureType == TEXTURE_SHADOW1D_ARRAY) &&
- Opcode != AMDGPU::TEX_SAMPLE_C_L &&
- Opcode != AMDGPU::TEX_SAMPLE_C_LB) {
- SrcSelect[ELEMENT_W] = ELEMENT_Z;
+ } else if (IS_VTX(Desc)) {
+ uint64_t InstWord01 = getBinaryCodeForInstr(MI, Fixups);
+ uint32_t InstWord2 = MI.getOperand(2).getImm(); // Offset
+ InstWord2 |= 1 << 19;
+
+ Emit(InstWord01, OS);
+ Emit(InstWord2, OS);
+ Emit((u_int32_t) 0, OS);
+ } else if (IS_TEX(Desc)) {
+ unsigned Opcode = MI.getOpcode();
+ bool HasOffsets = (Opcode == AMDGPU::TEX_LD);
+ unsigned OpOffset = HasOffsets ? 3 : 0;
+ int64_t Sampler = MI.getOperand(OpOffset + 3).getImm();
+ int64_t TextureType = MI.getOperand(OpOffset + 4).getImm();
+
+ uint32_t SrcSelect[4] = {0, 1, 2, 3};
+ uint32_t Offsets[3] = {0, 0, 0};
+ uint64_t CoordType[4] = {1, 1, 1, 1};
+
+ if (HasOffsets)
+ for (unsigned i = 0; i < 3; i++) {
+ int SignedOffset = MI.getOperand(i + 2).getImm();
+ Offsets[i] = (SignedOffset & 0x1F);
}
- uint64_t Word01 = getBinaryCodeForInstr(MI, Fixups) |
- CoordType[ELEMENT_X] << 60 | CoordType[ELEMENT_Y] << 61 |
- CoordType[ELEMENT_Z] << 62 | CoordType[ELEMENT_W] << 63;
- uint32_t Word2 = Sampler << 15 | SrcSelect[ELEMENT_X] << 20 |
- SrcSelect[ELEMENT_Y] << 23 | SrcSelect[ELEMENT_Z] << 26 |
- SrcSelect[ELEMENT_W] << 29 | Offsets[0] << 0 | Offsets[1] << 5 |
- Offsets[2] << 10;
-
- Emit(Word01, OS);
- Emit(Word2, OS);
- Emit((u_int32_t) 0, OS);
- break;
+ if (TextureType == TEXTURE_RECT ||
+ TextureType == TEXTURE_SHADOWRECT) {
+ CoordType[ELEMENT_X] = 0;
+ CoordType[ELEMENT_Y] = 0;
}
- case AMDGPU::CF_ALU:
- case AMDGPU::CF_ALU_PUSH_BEFORE: {
- uint64_t Inst = getBinaryCodeForInstr(MI, Fixups);
- Emit(Inst, OS);
- break;
- }
- case AMDGPU::CF_CALL_FS_EG:
- case AMDGPU::CF_CALL_FS_R600:
- case AMDGPU::CF_TC_EG:
- case AMDGPU::CF_VC_EG:
- case AMDGPU::CF_TC_R600:
- case AMDGPU::CF_VC_R600:
- case AMDGPU::WHILE_LOOP_EG:
- case AMDGPU::END_LOOP_EG:
- case AMDGPU::LOOP_BREAK_EG:
- case AMDGPU::CF_CONTINUE_EG:
- case AMDGPU::CF_JUMP_EG:
- case AMDGPU::CF_ELSE_EG:
- case AMDGPU::POP_EG:
- case AMDGPU::WHILE_LOOP_R600:
- case AMDGPU::END_LOOP_R600:
- case AMDGPU::LOOP_BREAK_R600:
- case AMDGPU::CF_CONTINUE_R600:
- case AMDGPU::CF_JUMP_R600:
- case AMDGPU::CF_ELSE_R600:
- case AMDGPU::POP_R600:
- case AMDGPU::EG_ExportSwz:
- case AMDGPU::R600_ExportSwz:
- case AMDGPU::EG_ExportBuf:
- case AMDGPU::R600_ExportBuf:
- case AMDGPU::PAD:
- case AMDGPU::CF_END_R600:
- case AMDGPU::CF_END_EG:
- case AMDGPU::CF_END_CM: {
- uint64_t Inst = getBinaryCodeForInstr(MI, Fixups);
- Emit(Inst, OS);
- break;
- }
- default:
- uint64_t Inst = getBinaryCodeForInstr(MI, Fixups);
- Emit(Inst, OS);
- break;
- }
- }
-}
-void R600MCCodeEmitter::EmitALUInstr(const MCInst &MI,
- SmallVectorImpl<MCFixup> &Fixups,
- raw_ostream &OS) const {
- const MCInstrDesc &MCDesc = MCII.get(MI.getOpcode());
-
- uint64_t InstWord01 = getBinaryCodeForInstr(MI, Fixups);
-
- //older alu have different encoding for instructions with one or two src
- //parameters.
- if ((STI.getFeatureBits() & AMDGPU::FeatureR600ALUInst) &&
- !(MCDesc.TSFlags & R600_InstFlag::OP3)) {
- uint64_t ISAOpCode = InstWord01 & (0x3FFULL << 39);
- InstWord01 &= ~(0x3FFULL << 39);
- InstWord01 |= ISAOpCode << 1;
- }
-
- unsigned SrcNum = MCDesc.TSFlags & R600_InstFlag::OP3 ? 3 :
- MCDesc.TSFlags & R600_InstFlag::OP2 ? 2 : 1;
-
- const unsigned SrcOps[3][2] = {
- {R600Operands::SRC0, R600Operands::SRC0_SEL},
- {R600Operands::SRC1, R600Operands::SRC1_SEL},
- {R600Operands::SRC2, R600Operands::SRC2_SEL}
- };
-
- for (unsigned SrcIdx = 0; SrcIdx < SrcNum; ++SrcIdx) {
- unsigned RegOpIdx = R600Operands::ALUOpTable[SrcNum-1][SrcOps[SrcIdx][0]];
- unsigned SelOpIdx = R600Operands::ALUOpTable[SrcNum-1][SrcOps[SrcIdx][1]];
- }
-
- Emit(InstWord01, OS);
- return;
-}
-
-void R600MCCodeEmitter::EmitSrc(const MCInst &MI, unsigned OpIdx,
- raw_ostream &OS) const {
- const MCOperand &MO = MI.getOperand(OpIdx);
- union {
- float f;
- uint32_t i;
- } Value;
- Value.i = 0;
- // Emit the source select (2 bytes). For GPRs, this is the register index.
- // For other potential instruction operands, (e.g. constant registers) the
- // value of the source select is defined in the r600isa docs.
- if (MO.isReg()) {
- unsigned reg = MO.getReg();
- EmitTwoBytes(getHWReg(reg), OS);
- if (reg == AMDGPU::ALU_LITERAL_X) {
- unsigned ImmOpIndex = MI.getNumOperands() - 1;
- MCOperand ImmOp = MI.getOperand(ImmOpIndex);
- if (ImmOp.isFPImm()) {
- Value.f = ImmOp.getFPImm();
+ if (TextureType == TEXTURE_1D_ARRAY ||
+ TextureType == TEXTURE_SHADOW1D_ARRAY) {
+ if (Opcode == AMDGPU::TEX_SAMPLE_C_L ||
+ Opcode == AMDGPU::TEX_SAMPLE_C_LB) {
+ CoordType[ELEMENT_Y] = 0;
} else {
- assert(ImmOp.isImm());
- Value.i = ImmOp.getImm();
+ CoordType[ELEMENT_Z] = 0;
+ SrcSelect[ELEMENT_Z] = ELEMENT_Y;
}
+ } else if (TextureType == TEXTURE_2D_ARRAY ||
+ TextureType == TEXTURE_SHADOW2D_ARRAY) {
+ CoordType[ELEMENT_Z] = 0;
}
- } else {
- // XXX: Handle other operand types.
- EmitTwoBytes(0, OS);
- }
- // Emit the source channel (1 byte)
- if (MO.isReg()) {
- EmitByte(getHWRegChan(MO.getReg()), OS);
- } else {
- EmitByte(0, OS);
- }
- // XXX: Emit isNegated (1 byte)
- if ((!(isFlagSet(MI, OpIdx, MO_FLAG_ABS)))
- && (isFlagSet(MI, OpIdx, MO_FLAG_NEG) ||
- (MO.isReg() &&
- (MO.getReg() == AMDGPU::NEG_ONE || MO.getReg() == AMDGPU::NEG_HALF)))){
- EmitByte(1, OS);
- } else {
- EmitByte(0, OS);
- }
-
- // Emit isAbsolute (1 byte)
- if (isFlagSet(MI, OpIdx, MO_FLAG_ABS)) {
- EmitByte(1, OS);
- } else {
- EmitByte(0, OS);
- }
-
- // XXX: Emit relative addressing mode (1 byte)
- EmitByte(0, OS);
-
- // Emit kc_bank, This will be adjusted later by r600_asm
- EmitByte(0, OS);
-
- // Emit the literal value, if applicable (4 bytes).
- Emit(Value.i, OS);
-
-}
-
-void R600MCCodeEmitter::EmitSrcISA(const MCInst &MI, unsigned RegOpIdx,
- unsigned SelOpIdx, raw_ostream &OS) const {
- const MCOperand &RegMO = MI.getOperand(RegOpIdx);
- const MCOperand &SelMO = MI.getOperand(SelOpIdx);
-
- union {
- float f;
- uint32_t i;
- } InlineConstant;
- InlineConstant.i = 0;
- // Emit source type (1 byte) and source select (4 bytes). For GPRs type is 0
- // and select is 0 (GPR index is encoded in the instr encoding. For constants
- // type is 1 and select is the original const select passed from the driver.
- unsigned Reg = RegMO.getReg();
- if (Reg == AMDGPU::ALU_CONST) {
- EmitByte(1, OS);
- uint32_t Sel = SelMO.getImm();
- Emit(Sel, OS);
- } else {
- EmitByte(0, OS);
- Emit((uint32_t)0, OS);
- }
-
- if (Reg == AMDGPU::ALU_LITERAL_X) {
- unsigned ImmOpIndex = MI.getNumOperands() - 2;
- MCOperand ImmOp = MI.getOperand(ImmOpIndex);
- if (ImmOp.isFPImm()) {
- InlineConstant.f = ImmOp.getFPImm();
- } else {
- assert(ImmOp.isImm());
- InlineConstant.i = ImmOp.getImm();
+ if ((TextureType == TEXTURE_SHADOW1D ||
+ TextureType == TEXTURE_SHADOW2D ||
+ TextureType == TEXTURE_SHADOWRECT ||
+ TextureType == TEXTURE_SHADOW1D_ARRAY) &&
+ Opcode != AMDGPU::TEX_SAMPLE_C_L &&
+ Opcode != AMDGPU::TEX_SAMPLE_C_LB) {
+ SrcSelect[ELEMENT_W] = ELEMENT_Z;
}
- }
- // Emit the literal value, if applicable (4 bytes).
- Emit(InlineConstant.i, OS);
-}
-
-void R600MCCodeEmitter::EmitFCInstr(const MCInst &MI, raw_ostream &OS) const {
-
- // Emit SRC
- unsigned NumOperands = MI.getNumOperands();
- if (NumOperands > 0) {
- assert(NumOperands == 1);
- EmitSrc(MI, 0, OS);
+ uint64_t Word01 = getBinaryCodeForInstr(MI, Fixups) |
+ CoordType[ELEMENT_X] << 60 | CoordType[ELEMENT_Y] << 61 |
+ CoordType[ELEMENT_Z] << 62 | CoordType[ELEMENT_W] << 63;
+ uint32_t Word2 = Sampler << 15 | SrcSelect[ELEMENT_X] << 20 |
+ SrcSelect[ELEMENT_Y] << 23 | SrcSelect[ELEMENT_Z] << 26 |
+ SrcSelect[ELEMENT_W] << 29 | Offsets[0] << 0 | Offsets[1] << 5 |
+ Offsets[2] << 10;
+
+ Emit(Word01, OS);
+ Emit(Word2, OS);
+ Emit((u_int32_t) 0, OS);
} else {
- EmitNullBytes(SRC_BYTE_COUNT, OS);
- }
-
- // Emit FC Instruction
- enum FCInstr instr;
- switch (MI.getOpcode()) {
- case AMDGPU::PREDICATED_BREAK:
- instr = FC_BREAK_PREDICATE;
- break;
- case AMDGPU::CONTINUE:
- instr = FC_CONTINUE;
- break;
- case AMDGPU::IF_PREDICATE_SET:
- instr = FC_IF_PREDICATE;
- break;
- case AMDGPU::ELSE:
- instr = FC_ELSE;
- break;
- case AMDGPU::ENDIF:
- instr = FC_ENDIF;
- break;
- case AMDGPU::ENDLOOP:
- instr = FC_ENDLOOP;
- break;
- case AMDGPU::WHILELOOP:
- instr = FC_BGNLOOP;
- break;
- default:
- abort();
- break;
- }
- EmitByte(instr, OS);
-}
-
-void R600MCCodeEmitter::EmitNullBytes(unsigned int ByteCount,
- raw_ostream &OS) const {
-
- for (unsigned int i = 0; i < ByteCount; i++) {
- EmitByte(0, OS);
+ uint64_t Inst = getBinaryCodeForInstr(MI, Fixups);
+ Emit(Inst, OS);
}
}
OS.write((uint8_t) Byte & 0xff);
}
-void R600MCCodeEmitter::EmitTwoBytes(unsigned int Bytes,
- raw_ostream &OS) const {
- OS.write((uint8_t) (Bytes & 0xff));
- OS.write((uint8_t) ((Bytes >> 8) & 0xff));
-}
-
void R600MCCodeEmitter::Emit(uint32_t Value, raw_ostream &OS) const {
for (unsigned i = 0; i < 4; i++) {
OS.write((uint8_t) ((Value >> (8 * i)) & 0xff));
}
}
-//===----------------------------------------------------------------------===//
-// Encoding helper functions
-//===----------------------------------------------------------------------===//
-
-bool R600MCCodeEmitter::isFCOp(unsigned opcode) const {
- switch(opcode) {
- default: return false;
- case AMDGPU::PREDICATED_BREAK:
- case AMDGPU::CONTINUE:
- case AMDGPU::IF_PREDICATE_SET:
- case AMDGPU::ELSE:
- case AMDGPU::ENDIF:
- case AMDGPU::ENDLOOP:
- case AMDGPU::WHILELOOP:
- return true;
- }
-}
-
-bool R600MCCodeEmitter::isTexOp(unsigned opcode) const {
- switch(opcode) {
- default: return false;
- case AMDGPU::TEX_LD:
- case AMDGPU::TEX_GET_TEXTURE_RESINFO:
- case AMDGPU::TEX_SAMPLE:
- case AMDGPU::TEX_SAMPLE_C:
- case AMDGPU::TEX_SAMPLE_L:
- case AMDGPU::TEX_SAMPLE_C_L:
- case AMDGPU::TEX_SAMPLE_LB:
- case AMDGPU::TEX_SAMPLE_C_LB:
- case AMDGPU::TEX_SAMPLE_G:
- case AMDGPU::TEX_SAMPLE_C_G:
- case AMDGPU::TEX_GET_GRADIENTS_H:
- case AMDGPU::TEX_GET_GRADIENTS_V:
- case AMDGPU::TEX_SET_GRADIENTS_H:
- case AMDGPU::TEX_SET_GRADIENTS_V:
- return true;
- }
-}
-
-bool R600MCCodeEmitter::isFlagSet(const MCInst &MI, unsigned Operand,
- unsigned Flag) const {
- const MCInstrDesc &MCDesc = MCII.get(MI.getOpcode());
- unsigned FlagIndex = GET_FLAG_OPERAND_IDX(MCDesc.TSFlags);
- if (FlagIndex == 0) {
- return false;
- }
- assert(MI.getOperand(FlagIndex).isImm());
- return !!((MI.getOperand(FlagIndex).getImm() >>
- (NUM_MO_FLAGS * Operand)) & Flag);
-}
-
#include "AMDGPUGenMCCodeEmitter.inc"
projects / oota-llvm.git / commitdiff