Retro/pcem
Watch
1
0
Fork
You've already forked pcem
 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

First stage of dynamic recompiler rewrite.

Browse source 
Basic IR generation calls C implementation of all instructions.
Backend generation implemented for x86, x86-64, ARM and ARM64.
This commit is contained in:
SarahW 2018-06-17 20:26:15 +01:00
commit 03fe25d818
46 changed files with 4134 additions and 17767 deletions
Download patch file Download diff file Expand all files Collapse all files

52
src/codegen.h
View file

@ -4,14 +4,6 @@
#include "mem.h"
#include "x86_ops.h"
#ifdef __amd64__
#include "codegen_x86-64.h"
#elif defined i386 || defined __i386 || defined __i386__ || defined _X86_ || defined WIN32 || defined _WIN32 || defined _WIN32
#include "codegen_x86.h"
#else
#error Dynamic recompiler not implemented on your platform
#endif
/*Handling self-modifying code (of which there is a lot on x86) :
PCem tracks a 'dirty mask' for each physical page, in which each bit
@ -37,6 +29,9 @@
same page).
*/
/*Hack until better memory management written*/
#define BLOCK_DATA_SIZE 0x10000
typedef struct codeblock_t
{
uint64_t page_mask, page_mask2;
@ -66,7 +61,7 @@ typedef struct codeblock_t
uint32_t status;
uint32_t flags;
uint8_t data[2048];
uint8_t data[BLOCK_DATA_SIZE];
} codeblock_t;
/*Code block uses FPU*/
@ -311,45 +306,6 @@ extern int block_pos;
#define CPU_BLOCK_END() cpu_block_end = 1
static inline void addbyte(uint8_t val)
{
codeblock[block_current].data[block_pos++] = val;
if (block_pos >= BLOCK_MAX)
{
CPU_BLOCK_END();
}
}
static inline void addword(uint16_t val)
{
*(uint16_t *)(void *)&codeblock[block_current].data[block_pos] = val;
block_pos += 2;
if (block_pos >= BLOCK_MAX)
{
CPU_BLOCK_END();
}
}
static inline void addlong(uint32_t val)
{
*(uint32_t *)&codeblock[block_current].data[block_pos] = val;
block_pos += 4;
if (block_pos >= BLOCK_MAX)
{
CPU_BLOCK_END();
}
}
static inline void addquad(uint64_t val)
{
*(uint64_t *)&codeblock[block_current].data[block_pos] = val;
block_pos += 8;
if (block_pos >= BLOCK_MAX)
{
CPU_BLOCK_END();
}
}
/*Current physical page of block being recompiled. -1 if no recompilation taking place */
extern uint32_t recomp_page;