mirror of
https://github.com/radareorg/radare2.git
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559 lines
13 KiB
C
559 lines
13 KiB
C
#ifndef R_ENDIAN_H
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#define R_ENDIAN_H
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#include <r_types.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* Endian agnostic functions working on single byte. */
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static inline ut8 r_read_ble8(const void *src) {
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if (!src) {
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return UT8_MAX;
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}
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return *(const ut8 *)src;
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}
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static inline ut8 r_read_at_ble8(const void *src, size_t offset) {
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return r_read_ble8 (((const ut8*)src) + offset);
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}
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static inline void r_write_ble8(void *dest, ut8 val) {
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*(ut8 *)dest = val;
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}
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static inline void r_write_at_ble8(void *dest, ut8 val, size_t offset) {
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ut8 *d = (ut8*)dest + offset;
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r_write_ble8 (d, val);
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}
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/* Big Endian functions. */
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static inline ut8 r_read_be8(const void *src) {
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return r_read_ble8 (src);
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}
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static inline ut8 r_read_at_be8(const void *src, size_t offset) {
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return r_read_at_ble8 (src, offset);
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}
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static inline void r_write_be8(void *dest, ut8 val) {
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r_write_ble8 (dest, val);
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}
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static inline void r_write_at_be8(void *dest, ut8 val, size_t offset) {
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r_write_at_ble8 (dest, val, offset);
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}
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static inline ut16 r_read_be16(const void *src) {
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const ut8 *s = (const ut8*)src;
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return (((ut16)s[0]) << 8) | (((ut16)s[1]) << 0);
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}
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static inline ut16 r_read_at_be16(const void *src, size_t offset) {
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const ut8 *s = (const ut8*)src + offset;
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return r_read_be16 (s);
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}
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static inline void r_write_be16(void *dest, ut16 val) {
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r_write_be8 (dest, val >> 8);
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r_write_at_be8 (dest, (ut8)val, sizeof (ut8));
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}
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static inline void r_write_at_be16(void *dest, ut16 val, size_t offset) {
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ut8 *d = (ut8*)dest + offset;
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r_write_be16 (d, val);
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}
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static inline ut32 r_read_be32(const void *src) {
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const ut8 *s = (const ut8*)src;
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return (((ut32)s[0]) << 24) | (((ut32)s[1]) << 16) |
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(((ut32)s[2]) << 8) | (((ut32)s[3]) << 0);
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}
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static inline ut32 r_read_at_be32(const void *src, size_t offset) {
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const ut8 *s = (const ut8*)src + offset;
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return r_read_be32 (s);
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}
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static inline void r_write_be32(void *dest, ut32 val) {
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r_write_be16 (dest, val >> 16);
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r_write_at_be16 (dest, val, sizeof (ut16));
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}
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static inline void r_write_be24(void *_dest, ut32 val) {
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ut8 *dest = (ut8*)_dest;
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r_write_be8 (dest++, val >> 16);
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r_write_be8 (dest++, val >> 8);
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r_write_be8 (dest, val);
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}
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static inline void r_write_at_be32(void *dest, ut32 val, size_t offset) {
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ut8 *d = (ut8*)dest + offset;
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r_write_be32 (d, val);
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}
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static inline ut64 r_read_be64(const void *src) {
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ut64 val = ((ut64)(r_read_be32 (src))) << 32;
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val |= r_read_at_be32 (src, sizeof (ut32));
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return val;
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}
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static inline ut64 r_read_at_be64(const void *src, size_t offset) {
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const ut8 *s = (const ut8*)src + offset;
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return r_read_be64 (s);
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}
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static inline void r_write_be64(void *dest, ut64 val) {
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r_write_be32 (dest, val >> 32);
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r_write_at_be32 (dest, (ut32)val, sizeof (ut32));
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}
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static inline void r_write_at_be64(void *dest, ut64 val, size_t offset) {
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ut8 *d = (ut8*)dest + offset;
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r_write_be64 (d, val);
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}
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/* Little Endian functions. */
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static inline ut8 r_read_le8(const void *src) {
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if (!src) {
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return UT8_MAX;
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}
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return r_read_ble8 (src);
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}
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static inline ut8 r_read_at_le8(const void *src, size_t offset) {
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return r_read_at_ble8 (src, offset);
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}
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static inline void r_write_le8(void *dest, ut8 val) {
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r_write_ble8 (dest, val);
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}
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static inline void r_write_at_le8(void *dest, ut8 val, size_t offset) {
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r_write_at_ble8 (dest, val, offset);
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}
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static inline ut16 r_read_le16(const void *src) {
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if (!src) {
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return UT16_MAX;
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}
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const ut8 *s = (const ut8*)src;
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return (((ut16)s[1]) << 8) | (((ut16)s[0]) << 0);
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}
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static inline ut16 r_read_at_le16(const void *src, size_t offset) {
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if (!src) {
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return UT16_MAX;
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}
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const ut8 *s = (const ut8*)src + offset;
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return r_read_le16 (s);
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}
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static inline void r_write_le16(void *dest, ut16 val) {
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r_write_le8 (dest, (ut8)val);
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r_write_at_le8 (dest, val >> 8, sizeof (ut8));
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}
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static inline void r_write_at_le16(void *dest, ut16 val, size_t offset) {
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ut8 *d = (ut8 *)dest + offset;
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r_write_le16 (d, val);
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}
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static inline void r_write_le24(void *_dest, ut32 val) {
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ut8* dest = (ut8*)_dest;
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r_write_le8 (dest++, val);
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r_write_le8 (dest++, val >> 8);
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r_write_le8 (dest, val >> 16);
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}
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static inline ut32 r_read_le32(const void *src) {
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if (!src) {
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return UT32_MAX;
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}
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const ut8 *s = (const ut8*)src;
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return (((ut32)s[3]) << 24) | (((ut32)s[2]) << 16) |
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(((ut32)s[1]) << 8) | (((ut32)s[0]) << 0);
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}
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static inline ut32 r_read_at_le32(const void *src, size_t offset) {
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if (!src) {
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return UT32_MAX;
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}
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const ut8 *s = (const ut8*)src + offset;
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return r_read_le32 (s);
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}
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static inline void r_write_le32(void *dest, ut32 val) {
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r_write_le16 (dest, val);
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r_write_at_le16 (dest, val >> 16, sizeof (ut16));
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}
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static inline void r_write_at_le32(void *dest, ut32 val, size_t offset) {
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ut8 *d = ((ut8*)dest) + offset;
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r_write_le32 (d, val);
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}
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static inline ut64 r_read_le64(const void *src) {
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ut64 val = ((ut64)(r_read_at_le32 (src, sizeof (ut32)))) << 32;
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val |= r_read_le32 (src);
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return val;
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}
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static inline ut64 r_read_at_le64(const void *src, size_t offset) {
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const ut8 *s = ((const ut8*)src) + offset;
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return r_read_le64 (s);
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}
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static inline void r_write_le64(void *dest, ut64 val) {
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r_write_le32 (dest, (ut32)val);
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r_write_at_le32 (dest, val >> 32, sizeof (ut32));
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}
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static inline void r_write_at_le64(void *dest, ut64 val, size_t offset) {
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ut8 *d = (ut8*)dest + offset;
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r_write_le64 (d, val);
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}
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/* Middle Endian functions. */
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static inline ut8 r_read_me8(const void *src) {
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return src ? r_read_ble8 (src): UT8_MAX;
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}
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static inline ut8 r_read_at_me8(const void *src, size_t offset) {
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return r_read_at_ble8 (src, offset);
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}
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static inline void r_write_me8(void *dest, ut8 val) {
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r_write_ble8 (dest, val);
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}
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static inline void r_write_at_me8(void *dest, ut8 val, size_t offset) {
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r_write_at_ble8 (dest, val, offset);
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}
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static inline ut16 r_read_me16(const void *src) {
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if (!src) {
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return UT16_MAX;
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}
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const ut8 *s = (const ut8*)src;
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return (((ut16)s[0]) << 8) | (((ut16)s[1]) << 0);
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}
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static inline ut16 r_read_at_me16(const void *src, size_t offset) {
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if (!src) {
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return UT16_MAX;
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}
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const ut8 *s = (const ut8*)src + offset;
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return r_read_me16 (s);
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}
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static inline void r_write_me16(void *dest, ut16 val) {
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r_write_me8 (dest, val >> 8);
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r_write_at_me8 (dest, (ut8)val, sizeof (ut8));
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}
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static inline void r_write_at_me16(void *dest, ut16 val, size_t offset) {
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ut8 *d = (ut8 *)dest + offset;
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r_write_me16 (d, val);
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}
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static inline ut32 r_read_me32(const void *src) {
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if (!src) {
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return UT32_MAX;
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}
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const ut8 *s = (const ut8*)src;
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return (((ut32)s[2]) << 24) | (((ut32)s[1]) << 16) |
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(((ut32)s[0]) << 8) | (((ut32)s[1]) << 0);
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}
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static inline ut32 r_read_at_me32(const void *src, size_t offset) {
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if (!src) {
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return UT32_MAX;
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}
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const ut8 *s = (const ut8*)src + offset;
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return r_read_me32 (s);
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}
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static inline void r_write_me32(void *dest, ut32 val) {
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r_write_me16 (dest, val);
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r_write_at_me16 (dest, val >> 16, sizeof (ut16));
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}
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static inline void r_write_at_me32(void *dest, ut32 val, size_t offset) {
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ut8 *d = ((ut8*)dest) + offset;
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r_write_me32 (d, val);
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}
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static inline ut64 r_read_me64(const void *src) {
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ut64 val = ((ut64)(r_read_at_me32 (src, sizeof (ut32)))) << 32;
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val |= r_read_me32 (src);
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return val;
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}
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static inline ut64 r_read_at_me64(const void *src, size_t offset) {
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const ut8 *s = ((const ut8*)src) + offset;
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return r_read_me64 (s);
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}
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static inline void r_write_me64(void *dest, ut64 val) {
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r_write_me32 (dest, (ut32)val);
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r_write_at_me32 (dest, val >> 32, sizeof (ut32));
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}
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static inline void r_write_at_me64(void *dest, ut64 val, size_t offset) {
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ut8 *d = (ut8*)dest + offset;
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r_write_me64 (d, val);
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}
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/* Helper functions */
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static inline ut16 r_read_ble16(const void *src, bool big_endian) {
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return big_endian? r_read_be16 (src): r_read_le16 (src);
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}
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static inline ut32 r_read_ble32(const void *src, bool big_endian) {
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return big_endian? r_read_be32 (src): r_read_le32 (src);
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}
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static inline ut64 r_read_ble64(const void *src, bool big_endian) {
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return big_endian? r_read_be64 (src): r_read_le64 (src);
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}
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static inline ut16 r_read_at_ble16(const void *src, size_t offset, bool big_endian) {
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return big_endian ? r_read_at_be16 (src, offset) : r_read_at_le16 (src, offset);
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}
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static inline ut32 r_read_at_ble32(const void *src, size_t offset, bool big_endian) {
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return big_endian ? r_read_at_be32 (src, offset) : r_read_at_le32 (src, offset);
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}
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static inline ut64 r_read_at_ble64(const void *src, size_t offset, bool big_endian) {
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return big_endian ? r_read_at_be64 (src, offset) : r_read_at_le64 (src, offset);
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}
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static inline ut64 r_read_ble(const void *src, bool big_endian, int size) {
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switch (size) {
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case 8:
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return (ut64) ((const ut8*)src)[0];
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case 16:
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return r_read_ble16 (src, big_endian);
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case 32:
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return r_read_ble32 (src, big_endian);
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case 64:
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return r_read_ble64 (src, big_endian);
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default:
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return UT64_MAX;
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}
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}
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static inline void r_write_ble16(void *dest, ut16 val, bool big_endian) {
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big_endian? r_write_be16 (dest, val): r_write_le16 (dest, val);
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}
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static inline void r_write_ble24(void *dest, ut32 val, bool big_endian) {
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big_endian? r_write_be24 (dest, val): r_write_le24 (dest, val);
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}
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static inline void r_write_ble32(void *dest, ut32 val, bool big_endian) {
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big_endian? r_write_be32 (dest, val): r_write_le32 (dest, val);
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}
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static inline void r_write_ble64(void *dest, ut64 val, bool big_endian) {
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big_endian? r_write_be64 (dest, val): r_write_le64 (dest, val);
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}
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static inline void r_write_ble(void *dst, ut64 val, bool big_endian, int size) {
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switch (size) {
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case 8:
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((ut8*)dst)[0] = (ut8) val;
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break;
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case 16:
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r_write_ble16 (dst, (ut16) val, big_endian);
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break;
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case 24:
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r_write_ble24 (dst, (ut32) val, big_endian);
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break;
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case 32:
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r_write_ble32 (dst, (ut32) val, big_endian);
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break;
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case 64:
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r_write_ble64 (dst, val, big_endian);
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break;
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default:
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break;
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}
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}
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// TODO: find better names and write vapis
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#define ut8p_b(x) ((x)[0])
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#define ut8p_bw(x) ((x)[0]|((x)[1]<<8))
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#define ut8p_bd(x) ((x)[0]|((x)[1]<<8)|((x)[2]<<16)|((x)[3]<<24))
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#define ut8p_bq(x) ((x)[0]|((x)[1]<<8)|((x)[2]<<16)|((x)[3]<<24)|((x)[4]<<32)|((x)[5]<<40)|((x)[6]<<48)|((x)[7]<<56))
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#define ut8p_lw(x) ((x)[1]|((x)[0]<<8))
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#define ut8p_ld(x) ((x)[3]|((x)[2]<<8)|((x)[1]<<16)|((x)[0]<<24))
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#define ut8p_lq(x) ((x)[7]|((x)[6]<<8)|((x)[5]<<16)|((x)[4]<<24)|((x)[3]<<32)|((x)[2]<<40)|((x)[1]<<48)|((x)[0]<<56))
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/*swap*/
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static inline ut16 r_swap_ut16(ut16 val) {
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return (val << 8) | (val >> 8 );
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}
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static inline st16 r_swap_st16(st16 val) {
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val = ((val << 8) & 0xFF00FF00 ) | ((val >> 8) & 0xFF00FF );
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return (val << 16) | (val >> 16);
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}
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static inline ut32 r_swap_ut32(ut32 val) {
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val = ((val << 8) & 0xFF00FF00 ) | ((val >> 8) & 0xFF00FF );
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return (val << 16) | (val >> 16);
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}
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static inline st32 r_swap_st32(st32 val) {
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val = ((val << 8) & 0xFF00FF00) | ((val >> 8) & 0xFF00FF );
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return (val << 16) | ((val >> 16) & 0xFFFF);
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}
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static inline ut64 r_swap_ut64(ut64 val) {
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val = ((val << 8) & 0xFF00FF00FF00FF00ULL ) | ((val >> 8) & 0x00FF00FF00FF00FFULL );
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val = ((val << 16) & 0xFFFF0000FFFF0000ULL ) | ((val >> 16) & 0x0000FFFF0000FFFFULL );
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return (val << 32) | (val >> 32);
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}
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static inline st64 r_swap_st64(st64 val) {
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val = ((val << 8) & 0xFF00FF00FF00FF00ULL ) | ((val >> 8) & 0x00FF00FF00FF00FFULL );
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val = ((val << 16) & 0xFFFF0000FFFF0000ULL ) | ((val >> 16) & 0x0000FFFF0000FFFFULL );
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return (val << 32) | ((val >> 32) & 0xFFFFFFFFULL);
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}
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/* Some "secured" functions, to do basic operation (mul, sub, add...) on integers */
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static inline int UT64_ADD(ut64 *r, ut64 a, ut64 b) {
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if (UT64_MAX - a < b) {
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return 0;
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}
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if (r) {
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*r = a + b;
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}
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return 1;
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}
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static inline int UT64_MUL(ut64 *r, ut64 a, ut64 b) {
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if (a && UT64_MAX / a < b) {
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return 0;
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}
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if (r) {
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*r = a * b;
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}
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return 1;
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}
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static inline int UT64_SUB(ut64 *r, ut64 a, ut64 b) {
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if (b > a) {
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return 0;
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}
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if (r) {
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*r = a - b;
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}
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return 1;
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}
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static inline int UT32_ADD(ut32 *r, ut32 a, ut32 b) {
|
|
if (UT32_MAX - a < b) {
|
|
return 0;
|
|
}
|
|
if (r) {
|
|
*r = a + b;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
static inline int UT32_MUL(ut32 *r, ut32 a, ut32 b) {
|
|
if (a && UT32_MAX / a < b) {
|
|
return 0;
|
|
}
|
|
if (r) {
|
|
*r = a * b;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
static inline int UT32_SUB(ut32 *r, ut32 a, ut32 b) {
|
|
if (b > a) {
|
|
return 0;
|
|
}
|
|
if (r) {
|
|
*r = a - b;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
static inline int UT16_ADD(ut16 *r, ut16 a, ut16 b) {
|
|
if (UT16_MAX - a < b) {
|
|
return 0;
|
|
}
|
|
if (r) {
|
|
*r = a + b;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
static inline int UT16_MUL(ut16 *r, ut16 a, ut16 b) {
|
|
if (a && UT16_MAX / a < b) {
|
|
return 0;
|
|
}
|
|
if (r) {
|
|
*r = a * b;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
static inline int UT16_SUB(ut16 *r, ut16 a, ut16 b) {
|
|
if (b > a) {
|
|
return 0;
|
|
}
|
|
if (r) {
|
|
*r = a - b;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
static inline int UT8_ADD(ut8 *r, ut8 a, ut8 b) {
|
|
if (UT8_MAX - a < b) {
|
|
return 0;
|
|
}
|
|
if (r) {
|
|
*r = a + b;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
static inline int UT8_MUL(ut8 *r, ut8 a, ut8 b) {
|
|
if (a && UT8_MAX / a < b) {
|
|
return 0;
|
|
}
|
|
if (r) {
|
|
*r = a * b;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
static inline int UT8_SUB(ut8 *r, ut8 a, ut8 b) {
|
|
if (b > a) {
|
|
return 0;
|
|
}
|
|
if (r) {
|
|
*r = a - b;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif
|