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Changes for new paging/memory functions

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Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@1353
This commit is contained in:
Sjoerd van der Berg 2003-10-22 14:25:52 +00:00
parent a2948b3d58
commit f634f27924
2 changed files with 71 additions and 128 deletions
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31
include/mem.h
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@ -26,7 +26,7 @@ typedef Bit32u PhysPt;
typedef Bit8u * HostPt;
typedef Bit32u RealPt;
typedef Bits MemHandle;
typedef Bit32s MemHandle;
#define MEM_PAGESIZE 4096
@ -43,12 +43,9 @@ MemHandle MEM_AllocatePages(Bitu pages,bool sequence);
PhysPt MEM_AllocatePage(void);
void MEM_ReleasePages(MemHandle handle);
bool MEM_ReAllocatePages(MemHandle & handle,Bitu pages,bool sequence);
void MEM_MapPagesHandle(Bitu lin_page,MemHandle mem,Bitu mem_page,Bitu pages);
void MEM_MapPagesDirect(Bitu lin_page,Bitu phys_page,Bitu pages);
void MEM_UnmapPages(Bitu phys_page,Bitu pages);
MemHandle MEM_NextHandle(MemHandle handle);
MemHandle MEM_NextHandleAt(MemHandle handle,Bitu where);
/*
The folowing six functions are used everywhere in the end so these should be changed for
@ -57,23 +54,23 @@ MemHandle MEM_NextHandle(MemHandle handle);
#ifdef WORDS_BIGENDIAN
INLINE Bit8u readb(HostPt off) {
INLINE Bit8u host_readb(HostPt off) {
return off[0];
};
INLINE Bit16u readw(HostPt off) {
INLINE Bit16u host_readw(HostPt off) {
return off[0] | (off[1] << 8);
};
INLINE Bit32u readd(HostPt off) {
INLINE Bit32u host_readd(HostPt off) {
return off[0] | (off[1] << 8) | (off[2] << 16) | (off[3] << 24);
};
INLINE void writeb(HostPt off,Bit8u val) {
INLINE void host_writeb(HostPt off,Bit8u val) {
off[0]=val;
};
INLINE void writew(HostPt off,Bit16u val) {
INLINE void host_writew(HostPt off,Bit16u val) {
off[0]=(Bit8u)(val);
off[1]=(Bit8u)(val >> 8);
};
INLINE void writed(HostPt off,Bit32u val) {
INLINE void host_writed(HostPt off,Bit32u val) {
off[0]=(Bit8u)(val);
off[1]=(Bit8u)(val >> 8);
off[2]=(Bit8u)(val >> 16);
@ -86,22 +83,22 @@ INLINE void writed(HostPt off,Bit32u val) {
#else
INLINE Bit8u readb(HostPt off) {
INLINE Bit8u host_readb(HostPt off) {
return *(Bit8u *)off;
};
INLINE Bit16u readw(HostPt off) {
INLINE Bit16u host_readw(HostPt off) {
return *(Bit16u *)off;
};
INLINE Bit32u readd(HostPt off) {
INLINE Bit32u host_readd(HostPt off) {
return *(Bit32u *)off;
};
INLINE void writeb(HostPt off,Bit8u val) {
INLINE void host_writeb(HostPt off,Bit8u val) {
*(Bit8u *)(off)=val;
};
INLINE void writew(HostPt off,Bit16u val) {
INLINE void host_writew(HostPt off,Bit16u val) {
*(Bit16u *)(off)=val;
};
INLINE void writed(HostPt off,Bit32u val) {
INLINE void host_writed(HostPt off,Bit32u val) {
*(Bit32u *)(off)=val;
};