m2c_macros.h

/*
 * This header contains macros emitted by m2c in "valid syntax" mode,
 * which can be enabled by passing `--valid-syntax` on the command line.
 *
 * In this mode, unhandled types and expressions are emitted as macros so
 * that the output is compilable without human intervention.
 */

#ifndef M2C_MACROS_H
#define M2C_MACROS_H

/* Unknown types */
typedef s32 M2C_UNK;
typedef s8  M2C_UNK8;
typedef s16 M2C_UNK16;
typedef s32 M2C_UNK32;
typedef s64 M2C_UNK64;

/* Unknown field access, like `*(type_ptr) &expr->unk_offset` */
#define M2C_FIELD(expr, type_ptr, offset) (*(type_ptr)((s8 *)(expr) + (offset)))

/* Bitwise (reinterpret) cast */
#define M2C_BITWISE(type, expr) ((type)(expr))

/* Unaligned reads */
#define M2C_LWL(expr) (expr)
#define M2C_FIRST3BYTES(expr) (expr)
#define M2C_UNALIGNED32(expr) (expr)

/* Unhandled instructions */
#define M2C_ERROR(desc) (0)
#define M2C_TRAP_IF(cond) (0)
#define M2C_BREAK() (0)
#define M2C_SYNC() (0)

#define GLUE_F64(a, b) (0.0)
#define MULT_HI(a, b) (0)
#define MULTU_HI(a, b) (0)
#define DMULT_HI(a, b) (0)
#define DMULTU_HI(a, b) (0)
#define CLZ(x) (0)

/* Carry bit from partially-implemented instructions */
#define M2C_CARRY 0

/* Memcpy patterns */
#define M2C_MEMCPY_ALIGNED memcpy
#define M2C_MEMCPY_UNALIGNED memcpy

#endif