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/*
* Copyright (c) 2012 Rob Clark <robdclark@gmail.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef IR2_H_
#define IR2_H_
#include <stdint.h>
#include <stdbool.h>
#include "instr-a2xx.h"
/* low level intermediate representation of an adreno a2xx shader program */
struct ir2_shader;
#define REG_MASK 0xff
struct ir2_shader_info {
uint16_t sizedwords;
int8_t max_reg; /* highest GPR # used by shader */
};
struct ir2_register {
int16_t write_idx, write_idx2, read_idx, reg;
/* bitmask of variables on which this one depends
* XXX: use bitmask util?
*/
uint32_t regmask[REG_MASK/32+1];
};
struct ir2_src_register {
enum {
IR2_REG_INPUT = 0x1,
IR2_REG_CONST = 0x2,
IR2_REG_NEGATE = 0x4,
IR2_REG_ABS = 0x8,
} flags;
int num;
char *swizzle;
};
struct ir2_dst_register {
enum {
IR2_REG_EXPORT = 0x1,
} flags;
int num;
char *swizzle;
};
enum ir2_pred {
IR2_PRED_NONE = 0,
IR2_PRED_EQ = 1,
IR2_PRED_NE = 2,
};
struct ir2_instruction {
struct ir2_shader *shader;
unsigned idx;
enum {
IR2_FETCH,
IR2_ALU_VECTOR,
IR2_ALU_SCALAR,
} instr_type;
enum ir2_pred pred;
int sync;
unsigned src_reg_count;
struct ir2_dst_register dst_reg;
struct ir2_src_register src_reg[3];
union {
/* FETCH specific: */
struct {
instr_fetch_opc_t opc;
unsigned const_idx;
/* texture fetch specific: */
bool is_cube : 1;
bool is_rect : 1;
/* vertex fetch specific: */
unsigned const_idx_sel;
enum a2xx_sq_surfaceformat fmt;
bool is_signed : 1;
bool is_normalized : 1;
uint32_t stride;
uint32_t offset;
} fetch;
/* ALU-Vector specific: */
struct {
instr_vector_opc_t opc;
bool clamp;
} alu_vector;
/* ALU-Scalar specific: */
struct {
instr_scalar_opc_t opc;
bool clamp;
} alu_scalar;
};
};
struct ir2_shader {
unsigned instr_count;
int max_reg;
struct ir2_register reg[REG_MASK+1];
struct ir2_instruction *instr[0x200];
uint32_t heap[100 * 4096];
unsigned heap_idx;
enum ir2_pred pred; /* pred inherited by newly created instrs */
};
struct ir2_shader * ir2_shader_create(void);
void ir2_shader_destroy(struct ir2_shader *shader);
void * ir2_shader_assemble(struct ir2_shader *shader,
struct ir2_shader_info *info);
struct ir2_instruction * ir2_instr_create(struct ir2_shader *shader,
int instr_type);
struct ir2_dst_register * ir2_dst_create(struct ir2_instruction *instr,
int num, const char *swizzle, int flags);
struct ir2_src_register * ir2_reg_create(struct ir2_instruction *instr,
int num, const char *swizzle, int flags);
/* some helper fxns: */
static inline struct ir2_instruction *
ir2_instr_create_alu_v(struct ir2_shader *shader, instr_vector_opc_t vop)
{
struct ir2_instruction *instr = ir2_instr_create(shader, IR2_ALU_VECTOR);
if (!instr)
return instr;
instr->alu_vector.opc = vop;
return instr;
}
static inline struct ir2_instruction *
ir2_instr_create_alu_s(struct ir2_shader *shader, instr_scalar_opc_t sop)
{
struct ir2_instruction *instr = ir2_instr_create(shader, IR2_ALU_SCALAR);
if (!instr)
return instr;
instr->alu_scalar.opc = sop;
return instr;
}
static inline struct ir2_instruction *
ir2_instr_create_vtx_fetch(struct ir2_shader *shader, int ci, int cis,
enum a2xx_sq_surfaceformat fmt, bool is_signed, int stride)
{
struct ir2_instruction *instr = ir2_instr_create(shader, IR2_FETCH);
instr->fetch.opc = VTX_FETCH;
instr->fetch.const_idx = ci;
instr->fetch.const_idx_sel = cis;
instr->fetch.fmt = fmt;
instr->fetch.is_signed = is_signed;
instr->fetch.stride = stride;
return instr;
}
static inline struct ir2_instruction *
ir2_instr_create_tex_fetch(struct ir2_shader *shader, int ci)
{
struct ir2_instruction *instr = ir2_instr_create(shader, IR2_FETCH);
instr->fetch.opc = TEX_FETCH;
instr->fetch.const_idx = ci;
return instr;
}
#endif /* IR2_H_ */
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