wok annotate linld/stuff/src/XMM.ASM @ rev 19636

linld: check asm instructions again processor type
author Pascal Bellard <pascal.bellard@slitaz.org>
date Fri Jan 20 09:55:25 2017 +0100 (2017-01-20)
parents 7f92b23984dc
children 96b6a30a3f9a
rev   line source
pascal@19515 1 ;***************************************************************
pascal@19515 2 ;****** This file is distributed under GPL
pascal@19515 3 ;***************************************************************
pascal@19515 4 ideal
pascal@19515 5 %crefref
pascal@19515 6 %noincl
pascal@19515 7 %nomacs
pascal@19636 8 ifdef NO386
pascal@19636 9 p8086
pascal@19636 10 else
pascal@19515 11 p386
pascal@19636 12 endif
pascal@19515 13
pascal@19515 14 group DGROUP _TEXT,_BSS
pascal@19515 15 assume cs:DGROUP,ds:DGROUP
pascal@19515 16
pascal@19515 17 segment _BSS byte public use16 'BSS'
pascal@19515 18
pascal@19515 19 global xmm_handler:dword
pascal@19515 20 xmm_handler dd ?
pascal@19515 21
pascal@19515 22 ends _BSS
pascal@19515 23
pascal@19515 24 segment _TEXT byte public use16 'CODE'
pascal@19515 25
pascal@19515 26 ;***************************************************************
pascal@19515 27 ;void enable_a20_xmm();
pascal@19515 28 ;***************************************************************
pascal@19515 29 global _enable_a20_xmm:near
pascal@19515 30 proc _enable_a20_xmm near
pascal@19515 31
pascal@19515 32 mov ah,03h ;global enable a20
pascal@19515 33 call xmm_driver ;
pascal@19515 34 mov ah,05h ;local enable a20
pascal@19515 35 ;jmp xmm_driver ;
pascal@19515 36
pascal@19515 37 endp _enable_a20_xmm
pascal@19515 38
pascal@19515 39 ;***************************************************************
pascal@19515 40 ;Call xmm driver addr or 0 if no xmm
pascal@19515 41 ;void xmm_driver()
pascal@19515 42 ;***************************************************************
pascal@19515 43 global xmm_driver:near
pascal@19515 44 proc xmm_driver near
pascal@19515 45
pascal@19636 46 ifndef NO386
pascal@19515 47 cmp [xmm_handler],0
pascal@19636 48 else
pascal@19636 49 mov ax,[word xmm_handler]
pascal@19636 50 or ax,[word xmm_handler+2]
pascal@19636 51 endif
pascal@19515 52 jne @@gotit
pascal@19515 53
pascal@19515 54 xchg ax,cx ; save cmd
pascal@19515 55 mov ax,4300h
pascal@19515 56 int 2fh
pascal@19515 57 mov bx,offset xmm_fail
pascal@19515 58 push cs
pascal@19515 59 pop es
pascal@19515 60 cmp al,80h
pascal@19515 61 jne @@err
pascal@19515 62 mov ax,4310h
pascal@19515 63 int 2fh
pascal@19515 64 @@err:
pascal@19515 65 xchg ax,cx ; restore cmd
pascal@19515 66 push es
pascal@19515 67 push bx
pascal@19515 68 pop [xmm_handler]
pascal@19515 69 @@gotit:
pascal@19515 70 call [xmm_handler]
pascal@19515 71 ret
pascal@19538 72 xmm_fail:
pascal@19538 73 xor ax,ax
pascal@19538 74 cwd
pascal@19538 75 retf
pascal@19538 76
pascal@19515 77 endp xmm_driver
pascal@19515 78
pascal@19515 79
pascal@19515 80 ;***************************************************************
pascal@19538 81 ;void xmm_alloc(struct image_himem *m)
pascal@19538 82 ;struct image_himem {
pascal@19538 83 ; 0 int fd;
pascal@19538 84 ; 2 u32 fallback;
pascal@19538 85 ; 6 u32 size;
pascal@19538 86 ;10 u32 remaining;
pascal@19538 87 ;14 u32 buf;
pascal@19538 88 ;18 u32 *bufv;
pascal@19538 89 ;20 char *errmsg;
pascal@19538 90 ;22 u32 chunk_size;
pascal@19538 91 ;26 void (*next_chunk)(struct image_himem *);
pascal@19538 92 ;28 u16 state;
pascal@19538 93 ;30 u16 fd2close;
pascal@19538 94 ;};
pascal@19515 95 ;***************************************************************
pascal@19515 96 global _xmm_alloc:near
pascal@19515 97 proc _xmm_alloc near
pascal@19515 98
pascal@19538 99 pop ax
pascal@19515 100 pop bx
pascal@19538 101 push bx
pascal@19538 102 push ax
pascal@19515 103 ifndef NO386
pascal@19538 104 mov edx,[bx+6] ; m->size
pascal@19515 105 dec edx
pascal@19515 106 shr edx,10 ; to Kb
pascal@19515 107 else
pascal@19538 108 mov ax,[bx+6] ; lo m->size
pascal@19538 109 mov dx,[bx+8] ; hi m->size
pascal@19515 110 sub ax,1
pascal@19515 111 sbb dx,0
pascal@19515 112 mov cx,10
pascal@19515 113 @@tokblp:
pascal@19515 114 shr dx,1
pascal@19515 115 rcr ax,1
pascal@19515 116 loop @@tokblp
pascal@19515 117 endif
pascal@19515 118 inc dx
pascal@19538 119 push bx
pascal@19515 120 mov ah,09h ;allocate blk
pascal@19515 121 call xmm_driver ;
pascal@19515 122 dec ax
pascal@19538 123 jnz @@goerr
pascal@19515 124 ;now: dx=handle of the blk
pascal@19515 125 mov ah,0Ch ;lock blk
pascal@19515 126 call xmm_driver ;
pascal@19515 127 dec ax
pascal@19515 128 ;now: dx:bx=addr of blk
pascal@19515 129 xchg ax,bx
pascal@19538 130 @@goerr:
pascal@19538 131 pop bx
pascal@19538 132 jnz @@err
pascal@19538 133 mov [bx+14],ax ; lo m->buf
pascal@19538 134 mov [bx+16],dx ; hi m->buf
pascal@19515 135 @@err:
pascal@19538 136 ret
pascal@19538 137
pascal@19515 138 endp _xmm_alloc
pascal@19515 139
pascal@19515 140 ends _TEXT
pascal@19515 141
pascal@19515 142 end
pascal@19515 143
pascal@19515 144 ;###### END OF FILE ############################################