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Move endian utilities to their own file.

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This commit is contained in:
David Neto 2015-10-27 16:14:40 -04:00
parent 0b9816813b
commit db901b622e
8 changed files with 148 additions and 82 deletions
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2
CMakeLists.txt
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@ -106,6 +106,7 @@ set(SPIRV_SOURCES
${CMAKE_CURRENT_SOURCE_DIR}/source/assembly_grammar.h
${CMAKE_CURRENT_SOURCE_DIR}/source/binary.h
${CMAKE_CURRENT_SOURCE_DIR}/source/diagnostic.h
${CMAKE_CURRENT_SOURCE_DIR}/source/endian.h
${CMAKE_CURRENT_SOURCE_DIR}/source/ext_inst.h
${CMAKE_CURRENT_SOURCE_DIR}/source/instruction.h
${CMAKE_CURRENT_SOURCE_DIR}/source/opcode.h
@ -117,6 +118,7 @@ set(SPIRV_SOURCES
${CMAKE_CURRENT_SOURCE_DIR}/source/assembly_grammar.cpp
${CMAKE_CURRENT_SOURCE_DIR}/source/binary.cpp
${CMAKE_CURRENT_SOURCE_DIR}/source/diagnostic.cpp
${CMAKE_CURRENT_SOURCE_DIR}/source/endian.cpp
${CMAKE_CURRENT_SOURCE_DIR}/source/ext_inst.cpp
${CMAKE_CURRENT_SOURCE_DIR}/source/opcode.cpp
${CMAKE_CURRENT_SOURCE_DIR}/source/operand.cpp

51
source/binary.cpp
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@ -34,6 +34,7 @@
#include <libspirv/libspirv.h>
#include "assembly_grammar.h"
#include "diagnostic.h"
#include "endian.h"
#include "ext_inst.h"
#include "instruction.h"
#include "opcode.h"
@ -42,59 +43,9 @@
// Binary API
enum {
I32_ENDIAN_LITTLE = 0x03020100ul,
I32_ENDIAN_BIG = 0x00010203ul,
};
static const union {
unsigned char bytes[4];
uint32_t value;
} o32_host_order = {{0, 1, 2, 3}};
using id_to_type_id_map = std::unordered_map<uint32_t, uint32_t>;
using type_id_to_type_map = std::unordered_map<uint32_t, libspirv::IdType>;
#define I32_ENDIAN_HOST (o32_host_order.value)
spv_result_t spvBinaryEndianness(const spv_binary binary,
spv_endianness_t *pEndian) {
if (!binary->code || !binary->wordCount) return SPV_ERROR_INVALID_BINARY;
if (!pEndian) return SPV_ERROR_INVALID_POINTER;
uint8_t bytes[4];
memcpy(bytes, binary->code, sizeof(uint32_t));
if (0x03 == bytes[0] && 0x02 == bytes[1] && 0x23 == bytes[2] &&
0x07 == bytes[3]) {
*pEndian = SPV_ENDIANNESS_LITTLE;
return SPV_SUCCESS;
}
if (0x07 == bytes[0] && 0x23 == bytes[1] && 0x02 == bytes[2] &&
0x03 == bytes[3]) {
*pEndian = SPV_ENDIANNESS_BIG;
return SPV_SUCCESS;
}
return SPV_ERROR_INVALID_BINARY;
}
uint32_t spvFixWord(const uint32_t word, const spv_endianness_t endian) {
if ((SPV_ENDIANNESS_LITTLE == endian && I32_ENDIAN_HOST == I32_ENDIAN_BIG) ||
(SPV_ENDIANNESS_BIG == endian && I32_ENDIAN_HOST == I32_ENDIAN_LITTLE)) {
return (word & 0x000000ff) << 24 | (word & 0x0000ff00) << 8 |
(word & 0x00ff0000) >> 8 | (word & 0xff000000) >> 24;
}
return word;
}
uint64_t spvFixDoubleWord(const uint32_t low, const uint32_t high,
const spv_endianness_t endian) {
return (uint64_t(spvFixWord(high, endian)) << 32) | spvFixWord(low, endian);
}
spv_result_t spvBinaryHeaderGet(const spv_binary binary,
const spv_endianness_t endian,
spv_header_t *pHeader) {

31
source/binary.h
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@ -34,37 +34,6 @@
// Functions
/// @brief Fix the endianness of a word
///
/// @param[in] word whos endianness should be fixed
/// @param[in] endian the desired endianness
///
/// @return word with host endianness correction
uint32_t spvFixWord(const uint32_t word, const spv_endianness_t endian);
/// @brief Fix the endianness of a double word
///
/// @param[in] low the lower 32-bit of the double word
/// @param[in] high the higher 32-bit of the double word
/// @param[in] endian the desired endianness
///
/// @return word with host endianness correction
uint64_t spvFixDoubleWord(const uint32_t low, const uint32_t high,
const spv_endianness_t endian);
/// @brief Determine the endianness of the SPV binary
///
/// Gets the endianness of the SPV source. Returns SPV_ENDIANNESS_UNKNOWN if
/// the
/// SPV magic number is invalid, otherwise the determined endianness.
///
/// @param[in] binary the binary module
/// @param[out] pEndian return the endianness of the SPV module
///
/// @return result code
spv_result_t spvBinaryEndianness(const spv_binary binary,
spv_endianness_t *pEndian);
/// @brief Grab the header from the SPV module
///
/// @param[in] binary the binary module

80
source/endian.cpp Normal file
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@ -0,0 +1,80 @@
// Copyright (c) 2015 The Khronos Group Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and/or associated documentation files (the
// "Materials"), to deal in the Materials without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Materials, and to
// permit persons to whom the Materials are 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 Materials.
//
// MODIFICATIONS TO THIS FILE MAY MEAN IT NO LONGER ACCURATELY REFLECTS
// KHRONOS STANDARDS. THE UNMODIFIED, NORMATIVE VERSIONS OF KHRONOS
// SPECIFICATIONS AND HEADER INFORMATION ARE LOCATED AT
// https://www.khronos.org/registry/
//
// THE MATERIALS ARE 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
// MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS.
#include "endian.h"
#include <cstring>
enum {
I32_ENDIAN_LITTLE = 0x03020100ul,
I32_ENDIAN_BIG = 0x00010203ul,
};
// TODO(dneto): This relies on undefined behaviour. Fix that.
static const union {
unsigned char bytes[4];
uint32_t value;
} o32_host_order = {{0, 1, 2, 3}};
#define I32_ENDIAN_HOST (o32_host_order.value)
uint32_t spvFixWord(const uint32_t word, const spv_endianness_t endian) {
if ((SPV_ENDIANNESS_LITTLE == endian && I32_ENDIAN_HOST == I32_ENDIAN_BIG) ||
(SPV_ENDIANNESS_BIG == endian && I32_ENDIAN_HOST == I32_ENDIAN_LITTLE)) {
return (word & 0x000000ff) << 24 | (word & 0x0000ff00) << 8 |
(word & 0x00ff0000) >> 8 | (word & 0xff000000) >> 24;
}
return word;
}
uint64_t spvFixDoubleWord(const uint32_t low, const uint32_t high,
const spv_endianness_t endian) {
return (uint64_t(spvFixWord(high, endian)) << 32) | spvFixWord(low, endian);
}
spv_result_t spvBinaryEndianness(const spv_binary binary,
spv_endianness_t *pEndian) {
if (!binary->code || !binary->wordCount) return SPV_ERROR_INVALID_BINARY;
if (!pEndian) return SPV_ERROR_INVALID_POINTER;
uint8_t bytes[4];
memcpy(bytes, binary->code, sizeof(uint32_t));
if (0x03 == bytes[0] && 0x02 == bytes[1] && 0x23 == bytes[2] &&
0x07 == bytes[3]) {
*pEndian = SPV_ENDIANNESS_LITTLE;
return SPV_SUCCESS;
}
if (0x07 == bytes[0] && 0x23 == bytes[1] && 0x02 == bytes[2] &&
0x03 == bytes[3]) {
*pEndian = SPV_ENDIANNESS_BIG;
return SPV_SUCCESS;
}
return SPV_ERROR_INVALID_BINARY;
}

62
source/endian.h Normal file
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@ -0,0 +1,62 @@
// Copyright (c) 2015 The Khronos Group Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and/or associated documentation files (the
// "Materials"), to deal in the Materials without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Materials, and to
// permit persons to whom the Materials are 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 Materials.
//
// MODIFICATIONS TO THIS FILE MAY MEAN IT NO LONGER ACCURATELY REFLECTS
// KHRONOS STANDARDS. THE UNMODIFIED, NORMATIVE VERSIONS OF KHRONOS
// SPECIFICATIONS AND HEADER INFORMATION ARE LOCATED AT
// https://www.khronos.org/registry/
//
// THE MATERIALS ARE 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
// MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS.
#ifndef _LIBSPIRV_UTIL_ENDIAN_H_
#define _LIBSPIRV_UTIL_ENDIAN_H_
#include <libspirv/libspirv.h>
/// @brief Fix the endianness of a word
///
/// @param[in] word whos endianness should be fixed
/// @param[in] endian the desired endianness
///
/// @return word with host endianness correction
uint32_t spvFixWord(const uint32_t word, const spv_endianness_t endian);
/// @brief Fix the endianness of a double word
///
/// @param[in] low the lower 32-bit of the double word
/// @param[in] high the higher 32-bit of the double word
/// @param[in] endian the desired endianness
///
/// @return word with host endianness correction
uint64_t spvFixDoubleWord(const uint32_t low, const uint32_t high,
const spv_endianness_t endian);
/// @brief Determine the endianness of the SPV binary
///
/// Gets the endianness of the SPV source. Returns SPV_ENDIANNESS_UNKNOWN if
/// the
/// SPV magic number is invalid, otherwise the determined endianness.
///
/// @param[in] binary the binary module
/// @param[out] pEndian return the endianness of the SPV module
///
/// @return result code
spv_result_t spvBinaryEndianness(const spv_binary binary,
spv_endianness_t *pEndian);
#endif

2
source/opcode.cpp
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@ -25,7 +25,7 @@
// MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS.
#include <libspirv/libspirv.h>
#include "binary.h"
#include "endian.h"
#include "instruction.h"
#include "opcode.h"

1
source/validate.cpp
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@ -27,6 +27,7 @@
#include <libspirv/libspirv.h>
#include "binary.h"
#include "diagnostic.h"
#include "endian.h"
#include "instruction.h"
#include "opcode.h"
#include "operand.h"

1
test/UnitSPIRV.h
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@ -31,6 +31,7 @@
#include "../source/assembly_grammar.h"
#include "../source/binary.h"
#include "../source/diagnostic.h"
#include "../source/endian.h"
#include "../source/opcode.h"
#include "../source/text.h"
#include "../source/text_handler.h"