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devs_format.h
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89 lines (75 loc) · 2.81 KB
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#pragma once
#include <stdint.h>
#include "devs_bytecode.h"
#define DEVS_VERSION_MAJOR(n) (unsigned)(((n) >> 24) & 0xff)
#define DEVS_VERSION_MINOR(n) (unsigned)(((n) >> 16) & 0xff)
#define DEVS_VERSION_PATCH(n) (unsigned)((n)&0xffff)
typedef uint16_t devs_pc_t;
typedef struct {
uint32_t start; // in bytes
uint32_t length; // in bytes
} devs_img_section_t;
typedef struct {
uint32_t magic0;
uint32_t magic1;
uint32_t version;
uint16_t num_globals;
uint16_t num_service_specs;
uint8_t reserved[DEVS_FIX_HEADER_SIZE - 4 - 4 - 4 - 2 - 2];
devs_img_section_t functions; // devs_function_desc_t[]
devs_img_section_t functions_data; // uint16_t[]
devs_img_section_t float_literals; // value_t[]
devs_img_section_t roles_removed; // no longer used
devs_img_section_t ascii_strings; // uint16_t[]
devs_img_section_t utf8_strings; // uint32_t[]
devs_img_section_t buffers; // devs_img_section_t[]
devs_img_section_t string_data; // "*_strings" and "buffers" point in here
devs_img_section_t service_specs; // devs_service_spec_t[] followed by other stuff
devs_img_section_t dcfg; // see jd_dcfg.h
} devs_img_header_t;
#define DEVS_ROLE_MASK ((1U << DEVS_ROLE_BITS) - 1)
#define DEVS_ROLE_INVALID DEVS_ROLE_MASK
#define DEVS_ROLE_FIRST_SPEC (1U << DEVS_ROLE_BITS)
typedef struct {
// position of function (must be within code section)
uint32_t start; // in bytes, in whole image
uint32_t length; // in bytes
uint16_t num_slots;
uint8_t num_args;
uint8_t flags;
uint16_t name_idx;
uint8_t num_try_frames;
uint8_t reserved;
} devs_function_desc_t;
typedef struct {
uint16_t name_idx; // "LightLevel"
uint16_t flags;
uint32_t service_class;
uint16_t num_packets;
uint16_t packets_offset; // offset in 32-bit words in spec section
uint32_t reserved;
} devs_service_spec_t;
typedef struct {
uint16_t name_idx; // "lightLevelError"
uint16_t code; // 0x1106 (reg-get)
uint16_t flags; // DEVS_PACKETSPEC_FLAG_*
uint16_t numfmt_or_offset;
} devs_packet_spec_t;
typedef struct {
uint16_t name_idx; // "x"
uint8_t numfmt;
uint8_t flags; // DEVS_FIELDSPEC_FLAG_*
} devs_field_spec_t;
#define DEVS_STRING_JMP_TABLE_MASK ((1 << DEVS_UTF8_TABLE_SHIFT) - 1)
typedef struct {
uint16_t size; // in bytes, of devs_utf8_string_data()
uint16_t length; // in unicode
// jmp_table[k] has byte offset of code point at position (k + 1) << DEVS_UTF8_TABLE_SHIFT
uint16_t jmp_table[0];
} devs_utf8_string_t;
static inline unsigned devs_utf8_string_jmp_entries(unsigned length) {
return length >> DEVS_UTF8_TABLE_SHIFT;
}
static inline char *devs_utf8_string_data(const devs_utf8_string_t *s) {
return (char *)(s->jmp_table + devs_utf8_string_jmp_entries(s->length));
}