wok rev 20142
linld: tiny shrink
| author | Pascal Bellard <pascal.bellard@slitaz.org> |
|---|---|
| date | Sat Nov 11 10:57:19 2017 +0100 (2017-11-11) |
| parents | eb2ccd9e093c |
| children | 0863dbc8e921 |
| files | linld/stuff/src/CRTL.ASM linld/stuff/src/JUMP.ASM linld/stuff/src/MEMTOP.ASM linld/stuff/src/XMM.ASM linld/stuff/src/_BEG.ASM |
line diff
1.1 --- a/linld/stuff/src/CRTL.ASM Sun Nov 05 22:04:17 2017 +0100 1.2 +++ b/linld/stuff/src/CRTL.ASM Sat Nov 11 10:57:19 2017 +0100 1.3 @@ -55,27 +55,26 @@ 1.4 proc _strcatb near 1.5 1.6 ifdef EXTRA 1.7 - mov dl,3 1.8 + mov cl,7Fh 1.9 db 0bbh ; mov bx,imm opcode 1.10 global _strcat:near 1.11 _strcat: 1.12 - mov dl,1 1.13 + mov cl,80h 1.14 db 0bbh ; mov bx,imm opcode 1.15 global _strcpy:near 1.16 _strcpy: 1.17 - mov dl,0 1.18 + xor cx,cx 1.19 endif 1.20 pop ax ;caller return address 1.21 - pop cx ; a 1.22 + pop dx ; a 1.23 pop bx ; b 1.24 push bx 1.25 - push cx 1.26 + push dx 1.27 push ax 1.28 push si 1.29 - mov si,cx 1.30 + mov si,dx 1.31 ifdef EXTRA 1.32 - shr dl,1 1.33 - jnc @@nocat 1.34 + jcxz @@nocat 1.35 endif 1.36 @@catlp: 1.37 lodsb 1.38 @@ -83,24 +82,25 @@ 1.39 jne @@catlp 1.40 dec si 1.41 ifdef EXTRA 1.42 - shr dl,1 1.43 - jnc @@nocat 1.44 + cmp dx,si 1.45 + adc al,cl ; set S when dx != si or cl = 80 1.46 + mov al,20h 1.47 + jns @@cpyhead 1.48 endif 1.49 - cmp cx,si 1.50 - jz @@nocat 1.51 - mov [word si],20h 1.52 - inc si 1.53 @@nocat: 1.54 - sub bx,si 1.55 @@cpylp: 1.56 - mov al,[bx+si] 1.57 + mov al,[bx] 1.58 + inc bx 1.59 +@@cpyhead: 1.60 mov [si],al 1.61 inc si 1.62 cmp al,0 1.63 jne @@cpylp 1.64 - mov ax,cx 1.65 +strfound: 1.66 + xchg ax,dx 1.67 +strend: 1.68 pop si 1.69 - ret 1.70 + ret 1.71 1.72 endp _strcatb 1.73
2.1 --- a/linld/stuff/src/JUMP.ASM Sun Nov 05 22:04:17 2017 +0100 2.2 +++ b/linld/stuff/src/JUMP.ASM Sat Nov 11 10:57:19 2017 +0100 2.3 @@ -36,6 +36,7 @@ 2.4 global _boot_kernel:near 2.5 proc _boot_kernel near 2.6 2.7 + p8086 2.8 ; Shrink stack: we won't need much of it now and have no malloc() plans 2.9 extrn _heap_top:word 2.10 mov ax,[_heap_top] 2.11 @@ -53,6 +54,7 @@ 2.12 mov ax,sp 2.13 shr ax,cl 2.14 else 2.15 + p386 2.16 mov bx,9000h 2.17 mov es,bx 2.18 mov ax,sp
3.1 --- a/linld/stuff/src/MEMTOP.ASM Sun Nov 05 22:04:17 2017 +0100 3.2 +++ b/linld/stuff/src/MEMTOP.ASM Sat Nov 11 10:57:19 2017 +0100 3.3 @@ -77,12 +77,10 @@ 3.4 3.5 mov ah,88h 3.6 int 15h ;ax=kbs above 1m 3.7 - jnc @@ok ; error: cf=1 or ax=0 3.8 - xor ax,ax ; 3.9 -@@ok: 3.10 -; xor dx,dx 3.11 - test ax,ax ;happens on big mem systems 3.12 - jnz tokb 3.13 + cmc ; error: cf=1 or ax=0 3.14 + sbb dx,dx 3.15 + and ax,dx ; 3.16 + jnz tokb ;happens on big mem systems 3.17 3.18 ;*************************************************************** 3.19 ;u32 memtop_cmos() 3.20 @@ -90,7 +88,6 @@ 3.21 3.22 ;memtop_cmos: 3.23 pushf 3.24 - cli 3.25 call rdcmos17 3.26 popf 3.27 tokb: 3.28 @@ -98,12 +95,12 @@ 3.29 add ah,4h ;account for 1024 low kb 3.30 adc dx,dx ; (optimized to death) 3.31 mov cl,10 ;multiply by 1024 3.32 - global N_LXLSH@:near 3.33 -N_LXLSH@: 3.34 ifndef NO386 3.35 shld dx,ax,cl 3.36 shl ax,cl ; (kbytes -> bytes) 3.37 else 3.38 + global N_LXLSH@:near 3.39 +N_LXLSH@: 3.40 mov ch,0 3.41 @@lp: 3.42 shl ax,1 3.43 @@ -141,7 +138,8 @@ 3.44 ; jnz @@ok 3.45 ; jmp memtop_cmos 3.46 3.47 -rdcmos17: mov al,18h ; read bytes 17-18 from CMOS 3.48 +rdcmos17: cli 3.49 + mov al,18h ; read bytes 17-18 from CMOS 3.50 call @@rdcmos 3.51 mov ah,al 3.52 mov al,17h
4.1 --- a/linld/stuff/src/XMM.ASM Sun Nov 05 22:04:17 2017 +0100 4.2 +++ b/linld/stuff/src/XMM.ASM Sat Nov 11 10:57:19 2017 +0100 4.3 @@ -38,7 +38,7 @@ 4.4 4.5 ;*************************************************************** 4.6 ;Call xmm driver addr or 0 if no xmm 4.7 -;void xmm_driver() 4.8 +;void xmm_driver(ah) 4.9 ;*************************************************************** 4.10 global xmm_driver:near 4.11 proc xmm_driver near 4.12 @@ -46,7 +46,7 @@ 4.13 push si 4.14 mov si,offset xmm_handler 4.15 ifndef NO386 4.16 - cmp [si],0 4.17 + cmp [dword si],0 4.18 else 4.19 mov ax,[word si] 4.20 or ax,[word si+2] 4.21 @@ -54,14 +54,14 @@ 4.22 jne @@gotit 4.23 4.24 xchg ax,cx ; save cmd 4.25 - mov ax,4300h 4.26 + mov ax,4300h ; installation check in al 4.27 int 2fh 4.28 mov bx,offset xmm_fail 4.29 push cs 4.30 pop es 4.31 cmp al,80h 4.32 jne @@err 4.33 - mov ax,4310h 4.34 + mov ax,4310h ; get driver address in es:bx 4.35 int 2fh 4.36 @@err: 4.37 xchg ax,cx ; restore cmd 4.38 @@ -70,6 +70,7 @@ 4.39 pop [dword si] 4.40 @@gotit: 4.41 call [dword si] 4.42 + dec ax ; Z=1=OK 4.43 pop si 4.44 ret 4.45 xmm_fail: 4.46 @@ -80,21 +81,22 @@ 4.47 endp xmm_driver 4.48 4.49 4.50 +struc image_himem ;struct image_himem { 4.51 +fd dw ? ; 0 int fd; 4.52 +fallback dd ? ; 2 u32 fallback; 4.53 +size dd ? ; 6 u32 size; 4.54 +remaining dd ? ;10 u32 remaining; 4.55 +buf dd ? ;14 u32 buf; 4.56 +bufv dw ? ;18 u32 *bufv; 4.57 +errmsg dw ? ;20 char *errmsg; 4.58 +chunk_size dd ? ;22 u32 chunk_size; 4.59 +next_chunk dw ? ;26 void (*next_chunk)(struct image_himem *); 4.60 +state dw ? ;28 u16 state; 4.61 +fd2close dw ? ;30 u16 fd2close; 4.62 +ends ;}; 4.63 + 4.64 ;*************************************************************** 4.65 ;void xmm_alloc(struct image_himem *m) 4.66 -;struct image_himem { 4.67 -; 0 int fd; 4.68 -; 2 u32 fallback; 4.69 -; 6 u32 size; 4.70 -;10 u32 remaining; 4.71 -;14 u32 buf; 4.72 -;18 u32 *bufv; 4.73 -;20 char *errmsg; 4.74 -;22 u32 chunk_size; 4.75 -;26 void (*next_chunk)(struct image_himem *); 4.76 -;28 u16 state; 4.77 -;30 u16 fd2close; 4.78 -;}; 4.79 ;*************************************************************** 4.80 global _xmm_alloc:near 4.81 proc _xmm_alloc near 4.82 @@ -104,35 +106,35 @@ 4.83 push bx 4.84 push ax 4.85 ifndef NO386 4.86 - mov edx,[bx+6] ; m->size 4.87 - dec edx 4.88 + mov edx,[(image_himem bx).size] ; m->size 4.89 + ;dec edx 4.90 shr edx,10 ; to Kb 4.91 else 4.92 - mov ax,[bx+6] ; lo m->size 4.93 - mov dx,[bx+8] ; hi m->size 4.94 - sub ax,1 4.95 - sbb dx,0 4.96 - mov cl,10 4.97 - extrn N_LXURSH@:near 4.98 - call N_LXURSH@ 4.99 + ;mov ax,-1 4.100 + ;cwd 4.101 + ;add ax,[word (image_himem bx).size] ; lo m->size 4.102 + ;adc dx,[word (image_himem bx+2).size] ; hi m->size 4.103 + mov ax,[word (image_himem bx).size] ; lo m->size 4.104 + mov dx,[word (image_himem bx+2).size] ; hi m->size 4.105 + mov cl,16-10 4.106 + extrn N_LXLSH@:near 4.107 + call N_LXLSH@ 4.108 endif 4.109 inc dx 4.110 push bx 4.111 - mov ah,09h ;allocate blk 4.112 + mov ah,09h ;allocate blk of DX kilobytes 4.113 call xmm_driver ; 4.114 - dec ax 4.115 jnz @@goerr 4.116 ;now: dx=handle of the blk 4.117 mov ah,0Ch ;lock blk 4.118 call xmm_driver ; 4.119 - dec ax 4.120 ;now: dx:bx=addr of blk 4.121 xchg ax,bx 4.122 @@goerr: 4.123 pop bx 4.124 jnz @@err 4.125 - mov [bx+14],ax ; lo m->buf 4.126 - mov [bx+16],dx ; hi m->buf 4.127 + mov [word (image_himem bx).buf],ax ; lo m->buf 4.128 + mov [word (image_himem bx+2).buf],dx ; hi m->buf 4.129 @@err: 4.130 ret 4.131
5.1 --- a/linld/stuff/src/_BEG.ASM Sun Nov 05 22:04:17 2017 +0100 5.2 +++ b/linld/stuff/src/_BEG.ASM Sat Nov 11 10:57:19 2017 +0100 5.3 @@ -151,9 +151,9 @@ 5.4 check_rm_paging: 5.5 ; It's a 386 in real mode, chk for paging (crazy but possible) 5.6 p386 5.7 - mov edx,cr0 5.8 - shl edx,1 ;CR0_PG to CF 5.9 - jc no_vcpi 5.10 + mov eax,cr0 5.11 + inc eax ;CR0_PG to S 5.12 + js no_vcpi 5.13 endcpu: 5.14 p8086 5.15 5.16 @@ -175,6 +175,14 @@ 5.17 xchg ax,bx 5.18 mov [bx+si],bh ; set eos 5.19 argbuild: 5.20 + ;ifdef DEBUG 5.21 + p386 5.22 + pusha 5.23 + mov bx,si 5.24 + extrn puts:near 5.25 + call puts 5.26 + popa 5.27 + ;endif 5.28 mov bx,2 ; argc * 2 5.29 argeos: 5.30 mov dl,1 ; look for a start of string