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kernel
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Arkady changed/optimized allocmem() 

git-svn-id: https://svn.code.sf.net/p/freedos/svn/kernel/trunk@950 6ac86273-5f31-0410-b378-82cca8765d1b
This commit is contained in:
Bart Oldeman 2004-05-23 20:01:30 +00:00
parent 05f3cdd165
commit c863987e18
3 changed files with 10 additions and 12 deletions
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4
kernel/config.c
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@ -490,7 +490,7 @@ VOID configDone(VOID)
unsigned short kernel_seg; unsigned short kernel_seg;
unsigned short hma_paras = (HMAFree+0xf)/16; unsigned short hma_paras = (HMAFree+0xf)/16;
allocmem(hma_paras, &kernel_seg); kernel_seg = allocmem(hma_paras);
p = para2far(kernel_seg - 1); p = para2far(kernel_seg - 1);
p->m_name[0] = 'S'; p->m_name[0] = 'S';
@ -2589,7 +2589,7 @@ VOID DoInstall(void)
*/ */
set_strategy(LAST_FIT); set_strategy(LAST_FIT);
allocmem(((unsigned)_init_end + ebda_size + 15) / 16, &installMemory); installMemory = allocmem(((unsigned)_init_end + ebda_size + 15) / 16);
InstallPrintf(("allocated memory at %x\n",installMemory)); InstallPrintf(("allocated memory at %x\n",installMemory));

6
kernel/init-mod.h
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@ -161,8 +161,8 @@ unsigned ASMPASCAL init_call_intr(int nr, iregs * rp);
unsigned ASMPASCAL read(int fd, void *buf, unsigned count); unsigned ASMPASCAL read(int fd, void *buf, unsigned count);
int ASMPASCAL open(const char *pathname, int flags); int ASMPASCAL open(const char *pathname, int flags);
int ASMPASCAL close(int fd); int ASMPASCAL close(int fd);
int ASMPASCAL dup2(int oldfdk, int newfd); int ASMPASCAL dup2(int oldfd, int newfd);
int ASMPASCAL allocmem(UWORD size, seg * segp); seg ASMPASCAL allocmem(UWORD size);
void ASMPASCAL init_PSPSet(seg psp_seg); void ASMPASCAL init_PSPSet(seg psp_seg);
int ASMPASCAL init_DosExec(int mode, exec_blk * ep, char * lp); int ASMPASCAL init_DosExec(int mode, exec_blk * ep, char * lp);
int ASMPASCAL init_setdrive(int drive); int ASMPASCAL init_setdrive(int drive);
@ -175,7 +175,7 @@ void ASMPASCAL set_DTA(void far *dta);
#pragma aux (pascal) init_DosOpen modify exact [ax bx dx] #pragma aux (pascal) init_DosOpen modify exact [ax bx dx]
#pragma aux (pascal) close modify exact [ax bx] #pragma aux (pascal) close modify exact [ax bx]
#pragma aux (pascal) dup2 modify exact [ax bx cx] #pragma aux (pascal) dup2 modify exact [ax bx cx]
#pragma aux (pascal) allocmem modify exact [ax bx dx] #pragma aux (pascal) allocmem modify exact [ax bx]
#pragma aux (pascal) init_PSPSet modify exact [ax bx] #pragma aux (pascal) init_PSPSet modify exact [ax bx]
#pragma aux (pascal) init_DosExec modify exact [ax bx dx es] #pragma aux (pascal) init_DosExec modify exact [ax bx dx es]
#pragma aux (pascal) init_setdrive modify exact [ax bx dx] #pragma aux (pascal) init_setdrive modify exact [ax bx dx]

12
kernel/intr.asm
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@ -199,7 +199,6 @@ INIT_DOSOPEN:
common_int21: common_int21:
int 21h int 21h
jnc common_no_error jnc common_no_error
common_error:
mov ax, -1 mov ax, -1
common_no_error: common_no_error:
ret ret
@ -278,19 +277,18 @@ INIT_SWITCHAR:
mov ax, 0x3701 mov ax, 0x3701
jmp short common_dl_int21 jmp short common_dl_int21
;; int allocmem(UWORD size, seg *segp) ;
; seg ASMPASCAL allocmem(UWORD size);
;
global ALLOCMEM global ALLOCMEM
ALLOCMEM: ALLOCMEM:
pop ax ; ret address pop ax ; ret address
pop dx ; segp
pop bx ; size pop bx ; size
push ax ; ret address push ax ; ret address
mov ah, 48h mov ah, 48h
int 21h int 21h
jc short common_error sbb bx, bx ; carry=1 -> ax=-1
mov bx, dx ; segp or ax, bx ; segment
mov [bx], ax
xor ax, ax
ret ret
;; void set_DTA(void far *dta) ;; void set_DTA(void far *dta)