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Move big-endian memory access to memreadwrite.h.

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This commit is contained in:
Maxim Poliakovski 2020-01-03 16:08:00 +01:00
parent 14e203f528
commit 241031dfe7
4 changed files with 23 additions and 7 deletions
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6
cpu/ppc/ppcmmu.cpp
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@ -14,6 +14,7 @@
#include <array>
#include <thread>
#include <atomic>
#include "memreadwrite.h"
#include "ppcemu.h"
#include "ppcmmu.h"
#include "devices/memctrlbase.h"
@ -65,10 +66,9 @@ void msr_status_update(){
msr_dr_test = (ppc_state.ppc_msr >> 4) & 1;
}
static inline void ppc_set_cur_instruction(unsigned char *ptr, uint32_t offset)
static inline void ppc_set_cur_instruction(const uint8_t *ptr)
{
ppc_cur_instruction = (ptr[offset] << 24) | (ptr[offset+1] << 16) |
(ptr[offset+2] << 8) | ptr[offset+3];
ppc_cur_instruction = READ_DWORD_BE(ptr);
}
static inline void ppc_set_return_val(unsigned char *ptr, uint32_t offset,

4
devices/mmiodevice.h
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@ -4,10 +4,6 @@
#include <cinttypes>
#include <string>
#define READ_WORD_BE(addr) ((addr)[0] << 16) | (addr)[1]
#define READ_DWORD_BE(addr) ((addr)[0] << 24) | ((addr)[1] << 16) | ((addr)[2] << 8) | (addr)[3]
#define READ_DWORD_LE(addr) ((addr)[3] << 24) | ((addr)[2] << 16) | ((addr)[1] << 8) | (addr)[0]
/** Abstract class representing a simple, memory-mapped I/O device */
class MMIODevice {
public:

1
devices/mpc106.cpp
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@ -14,6 +14,7 @@
#include <cstring>
#include <cinttypes>
#include "memreadwrite.h"
#include "memctrlbase.h"
#include "mmiodevice.h"
#include "mpc106.h"

19
memreadwrite.h Normal file
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@ -0,0 +1,19 @@
#ifndef MEM_READ_WRITE_H
#define MEM_READ_WRITE_H
/** @file Set of macros for accessing integers of various sizes and endianness
in host memory.
*/
/* read a unaligned big-endian WORD (16bit) */
#define READ_WORD_BE(addr) (((addr)[0] << 16) | (addr)[1])
/* read a unaligned big-endian DWORD (32bit) */
#define READ_DWORD_BE(addr) (((addr)[0] << 24) | ((addr)[1] << 16) | \
((addr)[2] << 8) | (addr)[3])
/* read a unaligned little-endian DWORD (32bit) */
#define READ_DWORD_LE(addr) (((addr)[3] << 24) | ((addr)[2] << 16) | \
((addr)[1] << 8) | (addr)[0])
#endif /* MEM_READ_WRITE_H */