1/*
2 * Copyright © 2015 Intel Corporation
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
21 * IN THE SOFTWARE.
22 *
23 * Authors:
24 *    Jason Ekstrand (jason@jlekstrand.net)
25 *
26 */
27
28/*
29 * A simple executable that opens a SPIR-V shader, converts it to NIR, and
30 * dumps out the result.  This should be useful for testing the
31 * spirv_to_nir code.
32 */
33
34#include "spirv/nir_spirv.h"
35
36#include <sys/mman.h>
37#include <sys/types.h>
38#include <fcntl.h>
39#include <unistd.h>
40#include <stdio.h>
41#include <errno.h>
42#include <string.h>
43
44#define WORD_SIZE 4
45
46int main(int argc, char **argv)
47{
48   int fd = open(argv[1], O_RDONLY);
49   if (fd < 0)
50   {
51      fprintf(stderr, "Failed to open %s\n", argv[1]);
52      return 1;
53   }
54
55   off_t len = lseek(fd, 0, SEEK_END);
56   if (len % WORD_SIZE != 0)
57   {
58      fprintf(stderr, "File length isn't a multiple of the word size\n");
59      fprintf(stderr, "Are you sure this is a valid SPIR-V shader?\n");
60      close(fd);
61      return 1;
62   }
63
64   size_t word_count = len / WORD_SIZE;
65
66   const void *map = mmap(NULL, len, PROT_READ, MAP_PRIVATE, fd, 0);
67   if (map == MAP_FAILED)
68   {
69      fprintf(stderr, "Failed to mmap the file: errno=%d, %s\n",
70              errno, strerror(errno));
71      close(fd);
72      return 1;
73   }
74
75   struct spirv_to_nir_options spirv_opts = {};
76
77   nir_function *func = spirv_to_nir(map, word_count, NULL, 0,
78                                     MESA_SHADER_FRAGMENT, "main",
79                                     &spirv_opts, NULL);
80   nir_print_shader(func->shader, stderr);
81
82   return 0;
83}
84