SPIRV-Tools/include/spirv-tools/libspirv.h

456 lines
19 KiB
C

// Copyright (c) 2015-2016 The Khronos Group Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef SPIRV_TOOLS_LIBSPIRV_H_
#define SPIRV_TOOLS_LIBSPIRV_H_
#ifdef __cplusplus
extern "C" {
#else
#include <stdbool.h>
#endif
#include <stddef.h>
#include <stdint.h>
// Helpers
#define SPV_BIT(shift) (1 << (shift))
#define SPV_FORCE_16_BIT_ENUM(name) _##name = 0x7fff
#define SPV_FORCE_32_BIT_ENUM(name) _##name = 0x7fffffff
// Enumerations
typedef enum spv_result_t {
SPV_SUCCESS = 0,
SPV_UNSUPPORTED = 1,
SPV_END_OF_STREAM = 2,
SPV_WARNING = 3,
SPV_FAILED_MATCH = 4,
SPV_REQUESTED_TERMINATION = 5, // Success, but signals early termination.
SPV_ERROR_INTERNAL = -1,
SPV_ERROR_OUT_OF_MEMORY = -2,
SPV_ERROR_INVALID_POINTER = -3,
SPV_ERROR_INVALID_BINARY = -4,
SPV_ERROR_INVALID_TEXT = -5,
SPV_ERROR_INVALID_TABLE = -6,
SPV_ERROR_INVALID_VALUE = -7,
SPV_ERROR_INVALID_DIAGNOSTIC = -8,
SPV_ERROR_INVALID_LOOKUP = -9,
SPV_ERROR_INVALID_ID = -10,
SPV_ERROR_INVALID_CFG = -11,
SPV_ERROR_INVALID_LAYOUT = -12,
SPV_ERROR_INVALID_CAPABILITY = -13,
SPV_FORCE_32_BIT_ENUM(spv_result_t)
} spv_result_t;
typedef enum spv_endianness_t {
SPV_ENDIANNESS_LITTLE,
SPV_ENDIANNESS_BIG,
SPV_FORCE_32_BIT_ENUM(spv_endianness_t)
} spv_endianness_t;
// The kinds of operands that an instruction may have.
//
// Some operand types are "concrete". The binary parser uses a concrete
// operand type to describe an operand of a parsed instruction.
//
// The assembler uses all operand types. In addition to determining what
// kind of value an operand may be, non-concrete operand types capture the
// fact that an operand might be optional (may be absent, or present exactly
// once), or might occur zero or more times.
//
// Sometimes we also need to be able to express the fact that an operand
// is a member of an optional tuple of values. In that case the first member
// would be optional, and the subsequent members would be required.
typedef enum spv_operand_type_t {
// A sentinel value.
SPV_OPERAND_TYPE_NONE = 0,
#define FIRST_CONCRETE(ENUM) ENUM, SPV_OPERAND_TYPE_FIRST_CONCRETE_TYPE = ENUM
#define LAST_CONCRETE(ENUM) ENUM, SPV_OPERAND_TYPE_LAST_CONCRETE_TYPE = ENUM
// Set 1: Operands that are IDs.
FIRST_CONCRETE(SPV_OPERAND_TYPE_ID),
SPV_OPERAND_TYPE_TYPE_ID,
SPV_OPERAND_TYPE_RESULT_ID,
SPV_OPERAND_TYPE_MEMORY_SEMANTICS_ID, // SPIR-V Sec 3.25
SPV_OPERAND_TYPE_SCOPE_ID, // SPIR-V Sec 3.27
// Set 2: Operands that are literal numbers.
SPV_OPERAND_TYPE_LITERAL_INTEGER, // Always unsigned 32-bits.
// The Instruction argument to OpExtInst. It's an unsigned 32-bit literal
// number indicating which instruction to use from an extended instruction
// set.
SPV_OPERAND_TYPE_EXTENSION_INSTRUCTION_NUMBER,
// The Opcode argument to OpSpecConstantOp. It determines the operation
// to be performed on constant operands to compute a specialization constant
// result.
SPV_OPERAND_TYPE_SPEC_CONSTANT_OP_NUMBER,
// A literal number whose format and size are determined by a previous operand
// in the same instruction. It's a signed integer, an unsigned integer, or a
// floating point number. It also has a specified bit width. The width
// may be larger than 32, which would require such a typed literal value to
// occupy multiple SPIR-V words.
SPV_OPERAND_TYPE_TYPED_LITERAL_NUMBER,
// Set 3: The literal string operand type.
SPV_OPERAND_TYPE_LITERAL_STRING,
// Set 4: Operands that are a single word enumerated value.
SPV_OPERAND_TYPE_SOURCE_LANGUAGE, // SPIR-V Sec 3.2
SPV_OPERAND_TYPE_EXECUTION_MODEL, // SPIR-V Sec 3.3
SPV_OPERAND_TYPE_ADDRESSING_MODEL, // SPIR-V Sec 3.4
SPV_OPERAND_TYPE_MEMORY_MODEL, // SPIR-V Sec 3.5
SPV_OPERAND_TYPE_EXECUTION_MODE, // SPIR-V Sec 3.6
SPV_OPERAND_TYPE_STORAGE_CLASS, // SPIR-V Sec 3.7
SPV_OPERAND_TYPE_DIMENSIONALITY, // SPIR-V Sec 3.8
SPV_OPERAND_TYPE_SAMPLER_ADDRESSING_MODE, // SPIR-V Sec 3.9
SPV_OPERAND_TYPE_SAMPLER_FILTER_MODE, // SPIR-V Sec 3.10
SPV_OPERAND_TYPE_SAMPLER_IMAGE_FORMAT, // SPIR-V Sec 3.11
SPV_OPERAND_TYPE_IMAGE_CHANNEL_ORDER, // SPIR-V Sec 3.12
SPV_OPERAND_TYPE_IMAGE_CHANNEL_DATA_TYPE, // SPIR-V Sec 3.13
SPV_OPERAND_TYPE_FP_ROUNDING_MODE, // SPIR-V Sec 3.16
SPV_OPERAND_TYPE_LINKAGE_TYPE, // SPIR-V Sec 3.17
SPV_OPERAND_TYPE_ACCESS_QUALIFIER, // SPIR-V Sec 3.18
SPV_OPERAND_TYPE_FUNCTION_PARAMETER_ATTRIBUTE, // SPIR-V Sec 3.19
SPV_OPERAND_TYPE_DECORATION, // SPIR-V Sec 3.20
SPV_OPERAND_TYPE_BUILT_IN, // SPIR-V Sec 3.21
SPV_OPERAND_TYPE_GROUP_OPERATION, // SPIR-V Sec 3.28
SPV_OPERAND_TYPE_KERNEL_ENQ_FLAGS, // SPIR-V Sec 3.29
SPV_OPERAND_TYPE_KERNEL_PROFILING_INFO, // SPIR-V Sec 3.30
SPV_OPERAND_TYPE_CAPABILITY, // SPIR-V Sec 3.31
// Set 5: Operands that are a single word bitmask.
// Sometimes a set bit indicates the instruction requires still more operands.
#define FIRST_CONCRETE_MASK(ENUM) \
ENUM, SPV_OPERAND_TYPE_FIRST_CONCRETE_MASK_TYPE = ENUM
FIRST_CONCRETE_MASK(SPV_OPERAND_TYPE_IMAGE), // SPIR-V Sec 3.14
SPV_OPERAND_TYPE_FP_FAST_MATH_MODE, // SPIR-V Sec 3.15
SPV_OPERAND_TYPE_SELECTION_CONTROL, // SPIR-V Sec 3.22
SPV_OPERAND_TYPE_LOOP_CONTROL, // SPIR-V Sec 3.23
SPV_OPERAND_TYPE_FUNCTION_CONTROL, // SPIR-V Sec 3.24
LAST_CONCRETE(SPV_OPERAND_TYPE_MEMORY_ACCESS), // SPIR-V Sec 3.26
SPV_OPERAND_TYPE_LAST_CONCRETE_MASK_TYPE =
SPV_OPERAND_TYPE_LAST_CONCRETE_TYPE,
#undef FIRST_CONCRETE_MASK
#undef FIRST_CONCRETE
#undef LAST_CONCRETE
// The remaining operand types are only used internally by the assembler.
// There are two categories:
// Optional : expands to 0 or 1 operand, like ? in regular expressions.
// Variable : expands to 0, 1 or many operands or pairs of operands.
// This is similar to * in regular expressions.
// Macros for defining bounds on optional and variable operand types.
// Any variable operand type is also optional.
#define FIRST_OPTIONAL(ENUM) ENUM, SPV_OPERAND_TYPE_FIRST_OPTIONAL_TYPE = ENUM
#define FIRST_VARIABLE(ENUM) ENUM, SPV_OPERAND_TYPE_FIRST_VARIABLE_TYPE = ENUM
#define LAST_VARIABLE(ENUM) \
ENUM, SPV_OPERAND_TYPE_LAST_VARIABLE_TYPE = ENUM, \
SPV_OPERAND_TYPE_LAST_OPTIONAL_TYPE = ENUM
// An optional operand represents zero or one logical operands.
// In an instruction definition, this may only appear at the end of the
// operand types.
FIRST_OPTIONAL(SPV_OPERAND_TYPE_OPTIONAL_ID),
// An optional image operand type.
SPV_OPERAND_TYPE_OPTIONAL_IMAGE,
// An optional memory access type.
SPV_OPERAND_TYPE_OPTIONAL_MEMORY_ACCESS,
// An optional literal integer.
SPV_OPERAND_TYPE_OPTIONAL_LITERAL_INTEGER,
// An optional literal number, which may be either integer or floating point.
SPV_OPERAND_TYPE_OPTIONAL_LITERAL_NUMBER,
// Like SPV_OPERAND_TYPE_TYPED_LITERAL_NUMBER, but optional, and integral.
SPV_OPERAND_TYPE_OPTIONAL_TYPED_LITERAL_INTEGER,
// An optional literal string.
SPV_OPERAND_TYPE_OPTIONAL_LITERAL_STRING,
// An optional access qualifier
SPV_OPERAND_TYPE_OPTIONAL_ACCESS_QUALIFIER,
// An optional context-independent value, or CIV. CIVs are tokens that we can
// assemble regardless of where they occur -- literals, IDs, immediate
// integers, etc.
SPV_OPERAND_TYPE_OPTIONAL_CIV,
// A variable operand represents zero or more logical operands.
// In an instruction definition, this may only appear at the end of the
// operand types.
FIRST_VARIABLE(SPV_OPERAND_TYPE_VARIABLE_ID),
SPV_OPERAND_TYPE_VARIABLE_LITERAL_INTEGER,
// A sequence of zero or more pairs of (typed literal integer, Id).
// Expands to zero or more:
// (SPV_OPERAND_TYPE_TYPED_LITERAL_INTEGER, SPV_OPERAND_TYPE_ID)
// where the literal number must always be an integer of some sort.
SPV_OPERAND_TYPE_VARIABLE_LITERAL_INTEGER_ID,
// A sequence of zero or more pairs of (Id, Literal integer)
LAST_VARIABLE(SPV_OPERAND_TYPE_VARIABLE_ID_LITERAL_INTEGER),
// This is a sentinel value, and does not represent an operand type.
// It should come last.
SPV_OPERAND_TYPE_NUM_OPERAND_TYPES,
SPV_FORCE_32_BIT_ENUM(spv_operand_type_t)
} spv_operand_type_t;
typedef enum spv_ext_inst_type_t {
SPV_EXT_INST_TYPE_NONE = 0,
SPV_EXT_INST_TYPE_GLSL_STD_450,
SPV_EXT_INST_TYPE_OPENCL_STD,
SPV_FORCE_32_BIT_ENUM(spv_ext_inst_type_t)
} spv_ext_inst_type_t;
// This determines at a high level the kind of a binary-encoded literal
// number, but not the bit width.
// In principle, these could probably be folded into new entries in
// spv_operand_type_t. But then we'd have some special case differences
// between the assembler and disassembler.
typedef enum spv_number_kind_t {
SPV_NUMBER_NONE = 0, // The default for value initialization.
SPV_NUMBER_UNSIGNED_INT,
SPV_NUMBER_SIGNED_INT,
SPV_NUMBER_FLOATING,
} spv_number_kind_t;
typedef enum spv_binary_to_text_options_t {
SPV_BINARY_TO_TEXT_OPTION_NONE = SPV_BIT(0),
SPV_BINARY_TO_TEXT_OPTION_PRINT = SPV_BIT(1),
SPV_BINARY_TO_TEXT_OPTION_COLOR = SPV_BIT(2),
SPV_BINARY_TO_TEXT_OPTION_INDENT = SPV_BIT(3),
SPV_BINARY_TO_TEXT_OPTION_SHOW_BYTE_OFFSET = SPV_BIT(4),
// Do not output the module header as leading comments in the assembly.
SPV_BINARY_TO_TEXT_OPTION_NO_HEADER = SPV_BIT(5),
// Use friendly names where possible. The heuristic may expand over
// time, but will use common names for scalar types, and debug names from
// OpName instructions.
SPV_BINARY_TO_TEXT_OPTION_FRIENDLY_NAMES = SPV_BIT(6),
SPV_FORCE_32_BIT_ENUM(spv_binary_to_text_options_t)
} spv_binary_to_text_options_t;
// Structures
// Information about an operand parsed from a binary SPIR-V module.
// Note that the values are not included. You still need access to the binary
// to extract the values.
typedef struct spv_parsed_operand_t {
// Location of the operand, in words from the start of the instruction.
uint16_t offset;
// Number of words occupied by this operand.
uint16_t num_words;
// The "concrete" operand type. See the definition of spv_operand_type_t
// for details.
spv_operand_type_t type;
// If type is a literal number type, then number_kind says whether it's
// a signed integer, an unsigned integer, or a floating point number.
spv_number_kind_t number_kind;
// The number of bits for a literal number type.
uint32_t number_bit_width;
} spv_parsed_operand_t;
// An instruction parsed from a binary SPIR-V module.
typedef struct spv_parsed_instruction_t {
// An array of words for this instruction, in native endianness.
const uint32_t* words;
// The number of words in this instruction.
uint16_t num_words;
uint16_t opcode;
// The extended instruction type, if opcode is OpExtInst. Otherwise
// this is the "none" value.
spv_ext_inst_type_t ext_inst_type;
// The type id, or 0 if this instruction doesn't have one.
uint32_t type_id;
// The result id, or 0 if this instruction doesn't have one.
uint32_t result_id;
// The array of parsed operands.
const spv_parsed_operand_t* operands;
uint16_t num_operands;
} spv_parsed_instruction_t;
typedef struct spv_const_binary_t {
const uint32_t* code;
const size_t wordCount;
} spv_const_binary_t;
typedef struct spv_binary_t {
uint32_t* code;
size_t wordCount;
} spv_binary_t;
typedef struct spv_text_t {
const char* str;
size_t length;
} spv_text_t;
typedef struct spv_position_t {
size_t line;
size_t column;
size_t index;
} spv_position_t;
typedef struct spv_diagnostic_t {
spv_position_t position;
char* error;
bool isTextSource;
} spv_diagnostic_t;
// Opaque struct containing the context used to operate on a SPIR-V module.
// Its object is used by various translation API functions.
typedef struct spv_context_t spv_context_t;
// Type Definitions
typedef spv_const_binary_t* spv_const_binary;
typedef spv_binary_t* spv_binary;
typedef spv_text_t* spv_text;
typedef spv_position_t* spv_position;
typedef spv_diagnostic_t* spv_diagnostic;
typedef const spv_context_t* spv_const_context;
typedef spv_context_t* spv_context;
// Platform API
// Returns the SPIRV-Tools software version as a null-terminated string.
// The contents of the underlying storage is valid for the remainder of
// the process.
const char* spvSoftwareVersionString();
// Returns a null-terminated string containing the name of the project,
// the software version string, and commit details.
// The contents of the underlying storage is valid for the remainder of
// the process.
const char* spvSoftwareVersionDetailsString();
// Certain target environments impose additional restrictions on SPIR-V, so it's
// often necessary to specify which one applies. SPV_ENV_UNIVERSAL means
// environment-agnostic SPIR-V.
typedef enum {
SPV_ENV_UNIVERSAL_1_0, // SPIR-V 1.0 latest revision, no other restrictions.
SPV_ENV_VULKAN_1_0, // Vulkan 1.0 latest revision.
SPV_ENV_UNIVERSAL_1_1, // SPIR-V 1.1 latest revision, no other restrictions.
SPV_ENV_OPENCL_2_1, // OpenCL 2.1 latest revision.
SPV_ENV_OPENCL_2_2, // OpenCL 2.2 latest revision.
SPV_ENV_OPENGL_4_0, // OpenGL 4.0 plus GL_ARB_gl_spirv, latest revisions.
SPV_ENV_OPENGL_4_1, // OpenGL 4.1 plus GL_ARB_gl_spirv, latest revisions.
SPV_ENV_OPENGL_4_2, // OpenGL 4.2 plus GL_ARB_gl_spirv, latest revisions.
SPV_ENV_OPENGL_4_3, // OpenGL 4.3 plus GL_ARB_gl_spirv, latest revisions.
// There is no variant for OpenGL 4.4.
SPV_ENV_OPENGL_4_5, // OpenGL 4.5 plus GL_ARB_gl_spirv, latest revisions.
} spv_target_env;
// Returns a string describing the given SPIR-V target environment.
const char* spvTargetEnvDescription(spv_target_env env);
// Creates a context object. Returns null if env is invalid.
spv_context spvContextCreate(spv_target_env env);
// Destroys the given context object.
void spvContextDestroy(spv_context context);
// Encodes the given SPIR-V assembly text to its binary representation. The
// length parameter specifies the number of bytes for text. Encoded binary will
// be stored into *binary. Any error will be written into *diagnostic if
// diagnostic is non-null. The generated binary is independent of the context
// and may outlive it.
spv_result_t spvTextToBinary(const spv_const_context context, const char* text,
const size_t length, spv_binary* binary,
spv_diagnostic* diagnostic);
// Frees an allocated text stream. This is a no-op if the text parameter
// is a null pointer.
void spvTextDestroy(spv_text text);
// Decodes the given SPIR-V binary representation to its assembly text. The
// word_count parameter specifies the number of words for binary. The options
// parameter is a bit field of spv_binary_to_text_options_t. Decoded text will
// be stored into *text. Any error will be written into *diagnostic if
// diagnostic is non-null.
spv_result_t spvBinaryToText(const spv_const_context context,
const uint32_t* binary, const size_t word_count,
const uint32_t options, spv_text* text,
spv_diagnostic* diagnostic);
// Frees a binary stream from memory. This is a no-op if binary is a null
// pointer.
void spvBinaryDestroy(spv_binary binary);
// Validates a SPIR-V binary for correctness. Any errors will be written into
// *diagnostic if diagnostic is non-null.
spv_result_t spvValidate(const spv_const_context context,
const spv_const_binary binary,
spv_diagnostic* diagnostic);
// Validates a raw SPIR-V binary for correctness. Any errors will be written
// into *diagnostic if diagnostic is non-null.
spv_result_t spvValidateBinary(const spv_const_context context,
const uint32_t* words, const size_t num_words,
spv_diagnostic* diagnostic);
// Creates a diagnostic object. The position parameter specifies the location in
// the text/binary stream. The message parameter, copied into the diagnostic
// object, contains the error message to display.
spv_diagnostic spvDiagnosticCreate(const spv_position position,
const char* message);
// Destroys a diagnostic object. This is a no-op if diagnostic is a null
// pointer.
void spvDiagnosticDestroy(spv_diagnostic diagnostic);
// Prints the diagnostic to stderr.
spv_result_t spvDiagnosticPrint(const spv_diagnostic diagnostic);
// The binary parser interface.
// A pointer to a function that accepts a parsed SPIR-V header.
// The integer arguments are the 32-bit words from the header, as specified
// in SPIR-V 1.0 Section 2.3 Table 1.
// The function should return SPV_SUCCESS if parsing should continue.
typedef spv_result_t (*spv_parsed_header_fn_t)(
void* user_data, spv_endianness_t endian, uint32_t magic, uint32_t version,
uint32_t generator, uint32_t id_bound, uint32_t reserved);
// A pointer to a function that accepts a parsed SPIR-V instruction.
// The parsed_instruction value is transient: it may be overwritten
// or released immediately after the function has returned. That also
// applies to the words array member of the parsed instruction. The
// function should return SPV_SUCCESS if and only if parsing should
// continue.
typedef spv_result_t (*spv_parsed_instruction_fn_t)(
void* user_data, const spv_parsed_instruction_t* parsed_instruction);
// Parses a SPIR-V binary, specified as counted sequence of 32-bit words.
// Parsing feedback is provided via two callbacks provided as function
// pointers. Each callback function pointer can be a null pointer, in
// which case it is never called. Otherwise, in a valid parse the
// parsed-header callback is called once, and then the parsed-instruction
// callback once for each instruction in the stream. The user_data parameter
// is supplied as context to the callbacks. Returns SPV_SUCCESS on successful
// parse where the callbacks always return SPV_SUCCESS. For an invalid parse,
// returns a status code other than SPV_SUCCESS, and if diagnostic is non-null
// also emits a diagnostic. If a callback returns anything other than
// SPV_SUCCESS, then that status code is returned, no further callbacks are
// issued, and no additional diagnostics are emitted.
spv_result_t spvBinaryParse(const spv_const_context context, void* user_data,
const uint32_t* words, const size_t num_words,
spv_parsed_header_fn_t parse_header,
spv_parsed_instruction_fn_t parse_instruction,
spv_diagnostic* diagnostic);
#ifdef __cplusplus
}
#endif
#endif // SPIRV_TOOLS_LIBSPIRV_H_