prog_instruction.c File Reference

#include "main/glheader.h"
#include "main/imports.h"
#include "main/mtypes.h"
#include "prog_instruction.h"

Data Structures
struct	instruction_info
	Basic info about each instruction. More...
Functions
void	_mesa_init_instructions (struct prog_instruction *inst, GLuint count)
	Initialize program instruction fields to defaults.
struct prog_instruction *	_mesa_alloc_instructions (GLuint numInst)
	Allocate an array of program instructions.
struct prog_instruction *	_mesa_realloc_instructions (struct prog_instruction *oldInst, GLuint numOldInst, GLuint numNewInst)
	Reallocate memory storing an array of program instructions.
struct prog_instruction *	_mesa_copy_instructions (struct prog_instruction *dest, const struct prog_instruction *src, GLuint n)
	Copy an array of program instructions.
void	_mesa_free_instructions (struct prog_instruction *inst, GLuint count)
	Free an array of instructions.
GLuint	_mesa_num_inst_src_regs (gl_inst_opcode opcode)
	Return the number of src registers for the given instruction/opcode.
GLuint	_mesa_num_inst_dst_regs (gl_inst_opcode opcode)
	Return the number of dst registers for the given instruction/opcode.
GLboolean	_mesa_is_tex_instruction (gl_inst_opcode opcode)
GLboolean	_mesa_check_soa_dependencies (const struct prog_instruction *inst)
	Check if there's a potential src/dst register data dependency when using SOA execution.
const char *	_mesa_opcode_string (gl_inst_opcode opcode)
	Return string name for given program opcode.
Variables
static struct instruction_info	InstInfo [MAX_OPCODE]
	Instruction info.

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Function Documentation

struct prog_instruction* _mesa_alloc_instructions

(

GLuint

numInst

)

[read]

Allocate an array of program instructions.

Parameters:

numInst

number of instructions

Returns:

pointer to instruction memory

GLboolean _mesa_check_soa_dependencies

(

const struct prog_instruction *

inst

)

Check if there's a potential src/dst register data dependency when using SOA execution.

Example: MOV T, T.yxwz; This would expand into: MOV t0, t1; MOV t1, t0; MOV t2, t3; MOV t3, t2; The second instruction will have the wrong value for t0 if executed as-is.

struct prog_instruction* _mesa_copy_instructions	(	struct prog_instruction *	dest,
		const struct prog_instruction *	src,
		GLuint	n
	)			[read]

Copy an array of program instructions.

Parameters:

	dest	pointer to destination.
	src	pointer to source.
	n	number of instructions to copy.

Returns:

pointer to destination.

void _mesa_free_instructions	(	struct prog_instruction *	inst,
		GLuint	count
	)

Free an array of instructions.

void _mesa_init_instructions	(	struct prog_instruction *	inst,
		GLuint	count
	)

Initialize program instruction fields to defaults.

Parameters:

	inst	first instruction to initialize
	count	number of instructions to initialize

GLboolean _mesa_is_tex_instruction

(

gl_inst_opcode

opcode

)

GLuint _mesa_num_inst_dst_regs

(

gl_inst_opcode

opcode

)

Return the number of dst registers for the given instruction/opcode.

GLuint _mesa_num_inst_src_regs

(

gl_inst_opcode

opcode

)

Return the number of src registers for the given instruction/opcode.

const char* _mesa_opcode_string

(

gl_inst_opcode

opcode

)

Return string name for given program opcode.

struct prog_instruction* _mesa_realloc_instructions	(	struct prog_instruction *	oldInst,
		GLuint	numOldInst,
		GLuint	numNewInst
	)			[read]

Reallocate memory storing an array of program instructions.

This is used when we need to append additional instructions onto an program.

Parameters:

	oldInst	pointer to first of old/src instructions
	numOldInst	number of instructions at <oldInst>
	numNewInst	desired size of new instruction array.

Returns:

pointer to start of new instruction array.

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Variable Documentation

struct instruction_info InstInfo[MAX_OPCODE] [static]

Instruction info.

Note:

Opcode should equal array index!

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