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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 IR_H_
#define IR_H_
#include <stdint.h>
#include <stdbool.h>
#include "instr-a2xx.h"
/* low level intermediate representation of an adreno a2xx shader program */
struct ir_shader;
struct ir_shader_info {
uint16_t sizedwords;
int8_t max_reg; /* highest GPR # used by shader */
uint8_t max_input_reg;
uint64_t regs_written;
};
struct ir_register {
enum {
IR_REG_CONST = 0x1,
IR_REG_EXPORT = 0x2,
IR_REG_NEGATE = 0x4,
IR_REG_ABS = 0x8,
} flags;
int num;
char *swizzle;
};
enum ir_pred {
IR_PRED_NONE = 0,
IR_PRED_EQ = 1,
IR_PRED_NE = 2,
};
struct ir_instruction {
struct ir_shader *shader;
enum {
IR_FETCH,
IR_ALU,
} instr_type;
enum ir_pred pred;
int sync;
unsigned regs_count;
struct ir_register *regs[5];
union {
/* FETCH specific: */
struct {
instr_fetch_opc_t opc;
unsigned const_idx;
/* maybe 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 specific: */
struct {
instr_vector_opc_t vector_opc;
instr_scalar_opc_t scalar_opc;
bool vector_clamp : 1;
bool scalar_clamp : 1;
} alu;
};
};
struct ir_cf {
struct ir_shader *shader;
instr_cf_opc_t cf_type;
union {
/* EXEC/EXEC_END specific: */
struct {
unsigned instrs_count;
struct ir_instruction *instrs[6];
uint32_t addr, cnt, sequence;
} exec;
/* ALLOC specific: */
struct {
instr_alloc_type_t type; /* SQ_POSITION or SQ_PARAMETER_PIXEL */
int size;
} alloc;
};
};
struct ir_shader {
unsigned cfs_count;
struct ir_cf *cfs[0x56];
uint32_t heap[100 * 4096];
unsigned heap_idx;
enum ir_pred pred; /* pred inherited by newly created instrs */
};
struct ir_shader * ir_shader_create(void);
void ir_shader_destroy(struct ir_shader *shader);
void * ir_shader_assemble(struct ir_shader *shader,
struct ir_shader_info *info);
struct ir_cf * ir_cf_create(struct ir_shader *shader, instr_cf_opc_t cf_type);
struct ir_instruction * ir_instr_create(struct ir_cf *cf, int instr_type);
struct ir_register * ir_reg_create(struct ir_instruction *instr,
int num, const char *swizzle, int flags);
/* some helper fxns: */
static inline struct ir_cf *
ir_cf_create_alloc(struct ir_shader *shader, instr_alloc_type_t type, int size)
{
struct ir_cf *cf = ir_cf_create(shader, ALLOC);
if (!cf)
return cf;
cf->alloc.type = type;
cf->alloc.size = size;
return cf;
}
static inline struct ir_instruction *
ir_instr_create_alu(struct ir_cf *cf, instr_vector_opc_t vop, instr_scalar_opc_t sop)
{
struct ir_instruction *instr = ir_instr_create(cf, IR_ALU);
if (!instr)
return instr;
instr->alu.vector_opc = vop;
instr->alu.scalar_opc = sop;
return instr;
}
static inline struct ir_instruction *
ir_instr_create_vtx_fetch(struct ir_cf *cf, int ci, int cis,
enum a2xx_sq_surfaceformat fmt, bool is_signed, int stride)
{
struct ir_instruction *instr = instr = ir_instr_create(cf, IR_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 ir_instruction *
ir_instr_create_tex_fetch(struct ir_cf *cf, int ci)
{
struct ir_instruction *instr = instr = ir_instr_create(cf, IR_FETCH);
instr->fetch.opc = TEX_FETCH;
instr->fetch.const_idx = ci;
return instr;
}
#endif /* IR_H_ */
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