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/*
* Mesa 3-D graphics library
* Version: 6.5
*
* Copyright (C) 2005-2006 Brian Paul All Rights Reserved.
*
* 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 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
* BRIAN PAUL 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.
*/
/**
* \file slang_execute.c
* intermediate code interpreter
* \author Michal Krol
*/
#include "imports.h"
#include "slang_utility.h"
#include "slang_assemble.h"
#include "slang_storage.h"
#include "slang_execute.h"
#define DEBUG_SLANG 0
void slang_machine_init (slang_machine *mach)
{
mach->ip = 0;
mach->sp = SLANG_MACHINE_STACK_SIZE;
mach->bp = 0;
mach->kill = 0;
mach->exit = 0;
}
int _slang_execute (const slang_assembly_file *file)
{
slang_machine mach;
slang_machine_init (&mach);
return _slang_execute2 (file, &mach);
}
#if DEBUG_SLANG
static void dump_instruction (FILE *f, slang_assembly *a, unsigned int i)
{
fprintf (f, "%.5u:\t", i);
switch (a->type)
{
/* core */
case slang_asm_none:
fprintf (f, "none");
break;
case slang_asm_float_copy:
fprintf (f, "float_copy\t%d, %d", a->param[0], a->param[1]);
break;
case slang_asm_float_move:
fprintf (f, "float_move\t%d, %d", a->param[0], a->param[1]);
break;
case slang_asm_float_push:
fprintf (f, "float_push\t%f", a->literal);
break;
case slang_asm_float_deref:
fprintf (f, "float_deref");
break;
case slang_asm_float_add:
fprintf (f, "float_add");
break;
case slang_asm_float_multiply:
fprintf (f, "float_multiply");
break;
case slang_asm_float_divide:
fprintf (f, "float_divide");
break;
case slang_asm_float_negate:
fprintf (f, "float_negate");
break;
case slang_asm_float_less:
fprintf (f, "float_less");
break;
case slang_asm_float_equal_exp:
fprintf (f, "float_equal");
break;
case slang_asm_float_equal_int:
fprintf (f, "float_equal\t%d, %d", a->param[0], a->param[1]);
break;
case slang_asm_float_to_int:
fprintf (f, "float_to_int");
break;
case slang_asm_float_sine:
fprintf (f, "float_sine");
break;
case slang_asm_float_arcsine:
fprintf (f, "float_arcsine");
break;
case slang_asm_float_arctan:
fprintf (f, "float_arctan");
break;
case slang_asm_float_power:
fprintf (f, "float_power");
break;
case slang_asm_float_log2:
fprintf (f, "float_log2");
break;
case slang_asm_float_floor:
fprintf (f, "float_floor");
break;
case slang_asm_float_ceil:
fprintf (f, "float_ceil");
break;
case slang_asm_int_copy:
fprintf (f, "int_copy\t%d, %d", a->param[0], a->param[1]);
break;
case slang_asm_int_move:
fprintf (f, "int_move\t%d, %d", a->param[0], a->param[1]);
break;
case slang_asm_int_push:
fprintf (f, "int_push\t%d", (GLint) a->literal);
break;
case slang_asm_int_deref:
fprintf (f, "int_deref");
break;
case slang_asm_int_to_float:
fprintf (f, "int_to_float");
break;
case slang_asm_int_to_addr:
fprintf (f, "int_to_addr");
break;
case slang_asm_bool_copy:
fprintf (f, "bool_copy\t%d, %d", a->param[0], a->param[1]);
break;
case slang_asm_bool_move:
fprintf (f, "bool_move\t%d, %d", a->param[0], a->param[1]);
break;
case slang_asm_bool_push:
fprintf (f, "bool_push\t%d", a->literal != 0.0f);
break;
case slang_asm_bool_deref:
fprintf (f, "bool_deref");
break;
case slang_asm_addr_copy:
fprintf (f, "addr_copy");
break;
case slang_asm_addr_push:
fprintf (f, "addr_push\t%u", a->param[0]);
break;
case slang_asm_addr_deref:
fprintf (f, "addr_deref");
break;
case slang_asm_addr_add:
fprintf (f, "addr_add");
break;
case slang_asm_addr_multiply:
fprintf (f, "addr_multiply");
break;
case slang_asm_jump:
fprintf (f, "jump\t%u", a->param[0]);
break;
case slang_asm_jump_if_zero:
fprintf (f, "jump_if_zero\t%u", a->param[0]);
break;
case slang_asm_enter:
fprintf (f, "enter\t%u", a->param[0]);
break;
case slang_asm_leave:
fprintf (f, "leave");
break;
case slang_asm_local_alloc:
fprintf (f, "local_alloc\t%u", a->param[0]);
break;
case slang_asm_local_free:
fprintf (f, "local_free\t%u", a->param[0]);
break;
case slang_asm_local_addr:
fprintf (f, "local_addr\t%u, %u", a->param[0], a->param[1]);
break;
case slang_asm_call:
fprintf (f, "call\t%u", a->param[0]);
break;
case slang_asm_return:
fprintf (f, "return");
break;
case slang_asm_discard:
fprintf (f, "discard");
break;
case slang_asm_exit:
fprintf (f, "exit");
break;
/* mesa-specific extensions */
case slang_asm_float_print:
fprintf (f, "float_print");
break;
case slang_asm_int_print:
fprintf (f, "int_print");
break;
case slang_asm_bool_print:
fprintf (f, "bool_print");
break;
default:
break;
}
fprintf (f, "\n");
}
static void dump (const slang_assembly_file *file)
{
unsigned int i;
static unsigned int counter = 0;
FILE *f;
char filename[256];
counter++;
_mesa_sprintf (filename, "~mesa-slang-assembly-dump-(%u).txt", counter);
f = fopen (filename, "w");
if (f == NULL)
return;
for (i = 0; i < file->count; i++)
dump_instruction (f, file->code + i, i);
fclose (f);
}
#endif
int _slang_execute2 (const slang_assembly_file *file, slang_machine *mach)
{
slang_machine_slot *stack;
#if DEBUG_SLANG
static unsigned int counter = 0;
char filename[256];
FILE *f;
#endif
/* assume 32-bit floats and uints; should work fine also on 64-bit platforms */
static_assert(sizeof (GLfloat) == 4);
static_assert(sizeof (GLuint) == 4);
#if DEBUG_SLANG
dump (file);
counter++;
_mesa_sprintf (filename, "~mesa-slang-assembly-exec-(%u).txt", counter);
f = fopen (filename, "w");
#endif
stack = mach->mem + SLANG_MACHINE_GLOBAL_SIZE;
while (!mach->exit)
{
slang_assembly *a = &file->code[mach->ip];
#if DEBUG_SLANG
if (f != NULL && a->type != slang_asm_none)
{
unsigned int i;
dump_instruction (f, file->code + mach->ip, mach->ip);
fprintf (f, "\t\tsp=%u bp=%u\n", mach->sp, mach->bp);
for (i = mach->sp; i < SLANG_MACHINE_STACK_SIZE; i++)
fprintf (f, "\t%.5u\t%6f\t%u\n", i, stack[i]._float, stack[i]._addr);
fflush (f);
}
#endif
mach->ip++;
switch (a->type)
{
/* core */
case slang_asm_none:
break;
case slang_asm_float_copy:
case slang_asm_int_copy:
case slang_asm_bool_copy:
mach->mem[(stack[mach->sp + a->param[0] / 4]._addr + a->param[1]) / 4]._float =
stack[mach->sp]._float;
mach->sp++;
break;
case slang_asm_float_move:
case slang_asm_int_move:
case slang_asm_bool_move:
stack[mach->sp + a->param[0] / 4]._float =
stack[mach->sp + (stack[mach->sp]._addr + a->param[1]) / 4]._float;
break;
case slang_asm_float_push:
case slang_asm_int_push:
case slang_asm_bool_push:
mach->sp--;
stack[mach->sp]._float = a->literal;
break;
case slang_asm_float_deref:
case slang_asm_int_deref:
case slang_asm_bool_deref:
stack[mach->sp]._float = mach->mem[stack[mach->sp]._addr / 4]._float;
break;
case slang_asm_float_add:
stack[mach->sp + 1]._float += stack[mach->sp]._float;
mach->sp++;
break;
case slang_asm_float_multiply:
stack[mach->sp + 1]._float *= stack[mach->sp]._float;
mach->sp++;
break;
case slang_asm_float_divide:
stack[mach->sp + 1]._float /= stack[mach->sp]._float;
mach->sp++;
break;
case slang_asm_float_negate:
stack[mach->sp]._float = -stack[mach->sp]._float;
break;
case slang_asm_float_less:
stack[mach->sp + 1]._float =
stack[mach->sp + 1]._float < stack[mach->sp]._float ? (GLfloat) 1 : (GLfloat) 0;
mach->sp++;
break;
case slang_asm_float_equal_exp:
stack[mach->sp + 1]._float =
stack[mach->sp + 1]._float == stack[mach->sp]._float ? (GLfloat) 1 : (GLfloat) 0;
mach->sp++;
break;
case slang_asm_float_equal_int:
mach->sp--;
stack[mach->sp]._float = stack[mach->sp + 1 + a->param[0] / 4]._float ==
stack[mach->sp + 1 + a->param[1] / 4]._float ? (GLfloat) 1 : (GLfloat) 0;
break;
case slang_asm_float_to_int:
stack[mach->sp]._float = (GLfloat) (GLint) stack[mach->sp]._float;
break;
case slang_asm_float_sine:
stack[mach->sp]._float = (GLfloat) _mesa_sin (stack[mach->sp]._float);
break;
case slang_asm_float_arcsine:
stack[mach->sp]._float = _mesa_asinf (stack[mach->sp]._float);
break;
case slang_asm_float_arctan:
stack[mach->sp]._float = _mesa_atanf (stack[mach->sp]._float);
break;
case slang_asm_float_power:
stack[mach->sp + 1]._float =
(GLfloat) _mesa_pow (stack[mach->sp + 1]._float, stack[mach->sp]._float);
mach->sp++;
break;
case slang_asm_float_log2:
stack[mach->sp]._float = LOG2 (stack[mach->sp]._float);
break;
case slang_asm_float_floor:
stack[mach->sp]._float = FLOORF (stack[mach->sp]._float);
break;
case slang_asm_float_ceil:
stack[mach->sp]._float = CEILF (stack[mach->sp]._float);
break;
case slang_asm_int_to_float:
break;
case slang_asm_int_to_addr:
stack[mach->sp]._addr = (GLuint) (GLint) stack[mach->sp]._float;
break;
case slang_asm_addr_copy:
mach->mem[stack[mach->sp + 1]._addr / 4]._addr = stack[mach->sp]._addr;
mach->sp++;
break;
case slang_asm_addr_push:
mach->sp--;
stack[mach->sp]._addr = a->param[0];
break;
case slang_asm_addr_deref:
stack[mach->sp]._addr = mach->mem[stack[mach->sp]._addr / 4]._addr;
break;
case slang_asm_addr_add:
stack[mach->sp + 1]._addr += stack[mach->sp]._addr;
mach->sp++;
break;
case slang_asm_addr_multiply:
stack[mach->sp + 1]._addr *= stack[mach->sp]._addr;
mach->sp++;
break;
case slang_asm_jump:
mach->ip = a->param[0];
break;
case slang_asm_jump_if_zero:
if (stack[mach->sp]._float == 0.0f)
mach->ip = a->param[0];
mach->sp++;
break;
case slang_asm_enter:
mach->sp--;
stack[mach->sp]._addr = mach->bp;
mach->bp = mach->sp + a->param[0] / 4;
break;
case slang_asm_leave:
mach->bp = stack[mach->sp]._addr;
mach->sp++;
break;
case slang_asm_local_alloc:
mach->sp -= a->param[0] / 4;
break;
case slang_asm_local_free:
mach->sp += a->param[0] / 4;
break;
case slang_asm_local_addr:
mach->sp--;
stack[mach->sp]._addr = SLANG_MACHINE_GLOBAL_SIZE * 4 + mach->bp * 4 -
(a->param[0] + a->param[1]) + 4;
break;
case slang_asm_call:
mach->sp--;
stack[mach->sp]._addr = mach->ip;
mach->ip = a->param[0];
break;
case slang_asm_return:
mach->ip = stack[mach->sp]._addr;
mach->sp++;
break;
case slang_asm_discard:
mach->kill = 1;
break;
case slang_asm_exit:
mach->exit = 1;
break;
/* mesa-specific extensions */
case slang_asm_float_print:
_mesa_printf ("slang print: %f\n", stack[mach->sp]._float);
break;
case slang_asm_int_print:
_mesa_printf ("slang print: %d\n", (GLint) stack[mach->sp]._float);
break;
case slang_asm_bool_print:
_mesa_printf ("slang print: %s\n", (GLint) stack[mach->sp]._float ? "true" : "false");
break;
}
}
#if DEBUG_SLANG
if (f != NULL)
fclose (f);
#endif
return 1;
}
|
