valter/dosbox-staging
1
0
Fork 0
Code Releases Activity

Add test for systems not support unaligned memory access. Rename the WLE functions to var_write

Browse source 
Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@2133
This commit is contained in:
Sjoerd van der Berg 2005-03-24 09:20:47 +00:00
parent 6693ca22b1
commit 4594c5a600
1 changed files with 13 additions and 13 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

26
include/mem.h
View file

@ -52,7 +52,7 @@ MemHandle MEM_NextHandleAt(MemHandle handle,Bitu where);
Working on big or little endian machines
*/
#ifdef WORDS_BIGENDIAN
#if defined(WORDS_BIGENDIAN) || !defined(C_UNALIGNED_MEMORY)
INLINE Bit8u host_readb(HostPt off) {
return off[0];
@ -77,10 +77,6 @@ INLINE void host_writed(HostPt off,Bit32u val) {
off[3]=(Bit8u)(val >> 24);
};
#define MLEB(_MLE_VAL_) (_MLE_VAL_)
#define MLEW(_MLE_VAL_) ((_MLE_VAL_ >> 8) | (_MLE_VAL_ << 8))
#define MLED(_MLE_VAL_) ((_MLE_VAL_ >> 24)|((_MLE_VAL_ >> 8)&0xFF00)|((_MLE_VAL_ << 8)&0xFF0000)|((_MLE_VAL_ << 24)&0xFF000000))
#else
INLINE Bit8u host_readb(HostPt off) {
@ -102,16 +98,20 @@ INLINE void host_writed(HostPt off,Bit32u val) {
*(Bit32u *)(off)=val;
};
#define MLEB(_MLE_VAL_) (_MLE_VAL_)
#define MLEW(_MLE_VAL_) (_MLE_VAL_)
#define MLED(_MLE_VAL_) (_MLE_VAL_)
#endif
#define WLE(VAR_,VAL_) \
if (sizeof(VAR_)==1) VAR_=MLEB(VAL_); \
if (sizeof(VAR_)==2) VAR_=MLEW(VAL_); \
if (sizeof(VAR_)==4) VAR_=MLED(VAL_);
INLINE void var_write(Bit8u & var, Bit8u val) {
host_writeb((HostPt)&var, val);
}
INLINE void var_write(Bit16u & var, Bit16u val) {
host_writew((HostPt)&var, val);
}
INLINE void var_write(Bit32u & var, Bit32u val) {
host_writed((HostPt)&var, val);
}
/* The Folowing six functions are slower but they recognize the paged memory system */