kolibrios/programs/cmm/lib/mem.h
Kirill Lipatov (Leency) 1ef8d92a9e app size decrease
git-svn-id: svn://kolibrios.org@7774 a494cfbc-eb01-0410-851d-a64ba20cac60
2020-04-11 15:48:27 +00:00

129 lines
2.0 KiB
C

#ifndef INCLUDE_MEM_H
#define INCLUDE_MEM_H
#ifndef INCLUDE_KOLIBRI_H
#include "../lib/kolibri.h"
#endif
inline dword mem_init()
{
$push ebx
$mov eax, 68
$mov ebx, 11
$int 0x40
$pop ebx
}
:dword malloc(dword size)
{
$push ebx
$push ecx
$mov eax, 68
$mov ebx, 12
$mov ecx, size
$int 0x40
$pop ecx
$pop ebx
return EAX;
}
:stdcall dword realloc(dword mptr, size)
{
$push ebx
$push ecx
$push edx
$mov eax, 68
$mov ebx, 20
$mov ecx, size
$mov edx, mptr
$int 0x40
$pop edx
$pop ecx
$pop ebx
return EAX;
}
:dword free(dword mptr)
{
$push eax
$push ebx
$push ecx
$mov eax, 68
$mov ebx, 13
$mov ecx, mptr
$test ecx, ecx
$jz end0
$int 0x40
@end0:
$pop ecx
$pop ebx
$pop eax
return 0;
}
inline fastcall memmov( EDI, ESI, ECX)
{
asm {
MOV EAX, ECX
CMP EDI, ESI
JG L1
JE L2
SAR ECX, 2
JS L2
REP MOVSD
MOV ECX, EAX
AND ECX, 3
REP MOVSB
JMP SHORT L2
L1: LEA ESI, DSDWORD[ ESI+ECX-4]
LEA EDI, DSDWORD[ EDI+ECX-4]
SAR ECX, 2
JS L2
STD
REP MOVSD
MOV ECX, EAX
AND ECX, 3
ADD ESI, 3
ADD EDI, 3
REP MOVSB
CLD
L2:
}
}
#define SHM_OPEN 0x00
#define SHM_OPEN_ALWAYS 0x04
#define SHM_CREATE 0x08
#define SHM_READ 0x00
#define SHM_WRITE 0x01
inline fastcall dword memopen(ECX, EDX, ESI)
{
$mov eax, 68
$mov ebx, 22
// ecx = area name, 31 symbols max
// edx = area size for SHM_CREATE SHM_OPEN_ALWAYS
// esi = flags, see the list below:
$int 0x40
// eax, edx - please check system documentation
}
inline fastcall dword memclose(ECX)
{
$mov eax, 68
$mov ebx, 23
$int 0x40
// eax destroyed
}
#define mem_Alloc malloc
#define mem_ReAlloc realloc
#define mem_Free free
#define mem_Init mem_init
#endif