Mercurial > repos > blastem

view gen.h @ 620:9d6fed6501ba

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Fix handling of code writes for Z80 core. This seems to get things close to being back to where they were before the big refactor that broke the Z80 core. Some problems remain. Notably the sound driver in Sonic 2 is still quite broken.
author Michael Pavone <pavone@retrodev.com>
date Mon, 29 Dec 2014 23:08:39 -0800
parents 1594525e2157
children 98927f1b005b
line wrap: on
line source

#ifndef GEN_H_
#define GEN_H_
#include <stdint.h>

#if defined(X86_64) || defined(X86_32)
typedef uint8_t code_word;
#define RESERVE_WORDS 5 //opcode + 4-byte displacement
#else
typedef uint32_t code_word;
#define RESERVE_WORDS 4 //1 push + 1 ldr + 1bx + 1 constant
#endif
typedef code_word * code_ptr;
#define CODE_ALLOC_SIZE (1024*1024)

typedef struct {
	code_ptr cur;
	code_ptr last;
} code_info;

void init_code_info(code_info *code);
void call(code_info *code, code_ptr fun);
void jmp(code_info *code, code_ptr dest);
void jmp_r(code_info *code, uint8_t dst);

#endif //GEN_H_