wok-current rev 23919
Add plop
| author | Pascal Bellard <pascal.bellard@slitaz.org> |
|---|---|
| date | Wed Aug 19 13:03:10 2020 +0000 (2020-08-19) |
| parents | 17bb3a5bf500 |
| children | 6f2ca254dc9c |
| files | plop/receipt plop/stuff/bootloader.S plop/stuff/pack plop/stuff/unlzma.S plop/stuff/unpack.S |
line diff
1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000 1.2 +++ b/plop/receipt Wed Aug 19 13:03:10 2020 +0000 1.3 @@ -0,0 +1,56 @@ 1.4 +# SliTaz package receipt. 1.5 + 1.6 +PACKAGE="plop" 1.7 +VERSION="5.0.15" 1.8 +CATEGORY="base-system" 1.9 +SHORT_DESC="USB / IDE-CD / PCMCIA CardBus and others boot utility." 1.10 +MAINTAINER="pascal.bellard@slitaz.org" 1.11 +LICENSE="other" 1.12 +WEB_SITE="https://www.plop.at/en/bootmanagers.html" 1.13 +TARBALL="plpbt-$VERSION.zip" 1.14 +WGET_URL="https://download.plop.at/files/bootmngr/$TARBALL" 1.15 + 1.16 +BUILD_DEPENDS="xz" 1.17 + 1.18 +# Rules to configure and make the package. 1.19 +compile_rules() 1.20 +{ 1.21 + while read ofs data name; do 1.22 + echo -en "\x$data" | \ 1.23 + dd conv=notrunc of=plpbt.bin bs=1 seek=$((0x$ofs)) 1.24 + done <<EOT 1.25 +0288 00 videoMode=text 1.26 +0295 00 stars=off 1.27 +0299 01 font=bios 1.28 +029A 00 zoomanimation=off 1.29 +EOT 1.30 + cp $stuff/*.S $stuff/pack . 1.31 + for i in bootloader unpack ; do 1.32 + cc -o $i.o -Wa,-a=$i.lst -c $i.S 1.33 + objcopy -O binary $i.o $i.bin 1.34 + done 1.35 + sed -i "s/VERSION/$VERSION/" pack 1.36 + ./pack --build bootloader.bin unpack.bin 1.37 + ./pack plpbt.bin plop 1.38 +} 1.39 + 1.40 +# Rules to gen a SliTaz package suitable for Tazpkg. 1.41 +genpkg_rules() 1.42 +{ 1.43 + mkdir -p $fs/boot $install/usr/share 1.44 + cp $src/plop $fs/boot/plop.exe 1.45 + cp -a $src/doc $install/usr/share 1.46 + cp -a $src/*.txt $src/*.TXT $install/usr/share/doc 1.47 +} 1.48 + 1.49 +# Pre and post install commands for Tazpkg. 1.50 +post_install() 1.51 +{ 1.52 + [ -s $1/boot/isolinux/isolinux.cfg ] && 1.53 + ! grep -qs 'USB/PCMCIA boot' $1/boot/isolinux/isolinux.cfg && sed -i \ 1.54 +'s|LABEL md5|LABEL plop usb pcmcia\ 1.55 + MENU LABEL USB/PCMCIA boot\ 1.56 + KERNEL /boot/plop.exe\ 1.57 +\n&|' $1/boot/isolinux/isolinux.cfg 1.58 + true 1.59 +}
2.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000 2.2 +++ b/plop/stuff/bootloader.S Wed Aug 19 13:03:10 2020 +0000 2.3 @@ -0,0 +1,655 @@ 2.4 +// Image/zImage & tiny bzImage linux kernel boot sector, (C) SliTaz, GPL2. 2.5 + 2.6 +SYSSEG = 0x1000 2.7 +setup_sects = 497 2.8 +syssize = 500 2.9 +cmd_line_ptr = 0x228 2.10 + 2.11 + .text 2.12 + .code16 2.13 + .org 0 2.14 + .globl _start 2.15 +_start: 2.16 + 2.17 +#define CODESZ 512 /* patched by installer */ 2.18 + 2.19 +// Default kernel format is 386 Image/zImage 2.20 +//#define BZIMAGE 0x207 /* setup version ; for bzImage < 512 Kb only */ 2.21 +//#define ELKS /* 8086/286 linux port */ 2.22 + 2.23 +/* some extra features */ 2.24 +#define EXE_SUPPORT real mode dos .exe file support +208/264 2.25 +#define CMDLINE dos kernel cmdline support +45 2.26 +#define VCPI VCPI 4.0 support (386+) +109 2.27 +#define SHUTDOWNDOS shutdown DOS services +29 2.28 + 2.29 +/* some contraints to reduce the code size */ 2.30 +//#define FLOPPY_1440K_ONLY 1.44M floppies support only -26 2.31 +#define FLOPPY_HAS_2_SIDES hardcoded heads count to 2 -15 2.32 +//#define NO_CMDLINE_SHRINK remove heading spaces ? -6-21 2.33 +//#define NO_CMDLINE_FILE remove @cmdline file support ? -21 2.34 +//#define NO_DOTS show progression dots ? -5 2.35 +#ifndef BZIMAGE 2.36 +#define TINY_ZIMAGE system < 64Kb ? -11 2.37 +#define NO_MINSETUP default setup (dos only) ? -4 2.38 +//#define NO_CURSOR_DEFINITION -8 2.39 +#endif 2.40 + 2.41 +#ifdef ELKS 2.42 + .arch i8086 2.43 +INITSEG = 0x0100 2.44 +SETUPSEG = 0x0120 2.45 +#define ONLY8086 2.46 +#undef BZIMAGE 2.47 +#undef VCPI 2.48 +#else 2.49 +INITSEG = 0x9000 2.50 +SETUPSEG = 0x9020 2.51 +#endif 2.52 + 2.53 +.macro shlclw cnt,obj 2.54 +#ifdef ONLY8086 2.55 + movb \cnt,%cl 2.56 + shlw %cl,\obj 2.57 +#else 2.58 + shlw \cnt,\obj 2.59 +#endif 2.60 +.endm 2.61 + 2.62 +.macro shrclw cnt,obj 2.63 +#ifdef ONLY8086 2.64 + movb \cnt,%cl 2.65 + shrw %cl,\obj 2.66 +#else 2.67 + shrw \cnt,\obj 2.68 +#endif 2.69 +.endm 2.70 + 2.71 +#ifdef EXE_SUPPORT 2.72 +#define EXEADRS(x) (x+0xE0) 2.73 +#define FLAT20(x) (x+16*INITSEG) 2.74 + 2.75 +.macro trace_int19 2.76 +#ifdef ONLY8086 2.77 + xorw %si, %si 2.78 + movw %si, %ds 2.79 + pushw 4+2(%si) 2.80 + pushw 4(%si) 2.81 + movw $step19, 4(%si) 2.82 + movw $INITSEG, 4+2(%si) 2.83 +#else 2.84 + pushl $4 2.85 + popw %si 2.86 + popw %ds 2.87 + pushl (%si) 2.88 + movl $step19+(INITSEG<<16), (%si) 2.89 +#endif 2.90 + pushfw 2.91 + popw %ax 2.92 + incb %ah # set TF 2.93 + pushw %ax 2.94 + popfw 2.95 + ljmp *4*0x19-4(%si) 2.96 +.endm 2.97 + 2.98 +stacktop = 0x9E00 # in 0x8000 .. 0xA000 2.99 + decw %bp // Magic number: MZ 2.100 + popw %dx 2.101 + jmp start // Bytes on last page of file 2.102 + .word (CODESZ+511)/512 // Pages in file INSTALLER 2.103 + .word 0 // Relocations 2.104 + .word (end_header-_start)/16 // Size of header in paragraphs 2.105 + .word 4096 // Minimum extra paragraphs needed 2.106 + .word -1 // Maximum extra paragraphs needed 2.107 + .word (CODESZ+15)/16 // Initial (relative) SS value INSTALLER 2.108 + .word stacktop // Initial SP value 2.109 + .word 0 // Checksum INSTALLER? 2.110 + .word EXEADRS(comstart) // Initial IP value 2.111 + .word 0xFFF0 // Initial (relative) CS value 2.112 +// .word 0x001C // File address of relocation table 2.113 +// .word 0,0,0 // Overlay number 2.114 +#else 2.115 +#undef VCPI 2.116 +#endif 2.117 +start: 2.118 + xorw %ax, %ax # %ax = 0 2.119 +zeroed = 12 # zeroed registers 2.120 + movw $zeroed/2, %cx # clear gdt + offset, %ds, limits 2.121 +stacktop = 0x9E00 # in 0x8000 .. 0xA000 (+zeroed+12) 2.122 +#ifdef ONLY8086 2.123 + movw $INITSEG, %bx 2.124 +#else 2.125 + pushw $INITSEG 2.126 +#endif 2.127 +end_header: 2.128 + cld # assume nothing 2.129 +#if defined(BZIMAGE) && BZIMAGE >= 0x202 2.130 + popw %es # %es contain INITSEG 2.131 + movw %es, %di 2.132 +#else 2.133 + # cmdline offset at 0x22 2.134 + movw $stacktop, %di # stacktop is an arbitrary value >= 2.135 + # length of bootsect + length of 2.136 + # setup + room for stack; 2.137 + # 12 is disk parm size. 2.138 +# ifdef ONLY8086 2.139 + pushw %bx 2.140 +# endif 2.141 + popw %es # %es contain INITSEG 2.142 +#endif 2.143 + pushw %es 2.144 + popw %ss # %es = %ss = INITSEG 2.145 + movw %di, %sp # put stack at INITSEG:stacktop-... 2.146 +#ifdef EXE_SUPPORT 2.147 + cwd # force %dx = 0 (floppy only) 2.148 +#endif 2.149 + 2.150 +# Many BIOS's default disk parameter tables will not recognize 2.151 +# multi-sector reads beyond the maximum sector number specified 2.152 +# in the default diskette parameter tables - this may mean 7 2.153 +# sectors in some cases. 2.154 +# 2.155 +# Since single sector reads are slow and out of the question, 2.156 +# we must take care of this by creating new parameter tables 2.157 +# (for the first disk) in RAM. We can set the maximum sector 2.158 +# count to 36 - the most we will encounter on an ED 2.88. 2.159 +# 2.160 +# High doesn't hurt. Low does. Let's use the max: 63 2.161 + 2.162 + rep # don't worry about cld 2.163 + stosw # already done above 2.164 + popw %bx # offset = 0 2.165 + popw %ds # %ds = 0 2.166 + 2.167 + movb setup_sects+0x7C00, %al # read bootsector + setup (%ds = 0) 2.168 + incw %ax 2.169 + 2.170 + ldsw 0x78(%bx), %si # %ds:%bx+0x78 is parameter table address 2.171 + pushw %es 2.172 + pushw %di 2.173 + movb $6, %cl # copy 12 bytes 2.174 + rep # don't worry about cld 2.175 + movsw # already done above 2.176 + movw %cx, %ds # %ds = 0 2.177 +#ifdef ONLY8086 2.178 + popw 0x78(%bx) # update parameter table address 2.179 + popw 0x78+2(%bx) 2.180 +#else 2.181 + popl 0x78(%bx) # update parameter table address 2.182 +#endif 2.183 + pushw %ss 2.184 + popw %ds # now %ds = %es = %ss = INITSEG 2.185 + movb $63, 0x4-12(%di) # patch sector count, %di = stacktop 2.186 + 2.187 + xchg %ax, %di # sector count 2.188 + popw %ax # limits = 0 2.189 + incw %cx # cylinder 0, sector 1, clear Z 2.190 + call read_first_sectors # read setup 2.191 + 2.192 +# This routine loads the system at address LOADSEG, making sure 2.193 +# no 64kB boundaries are crossed. We try to load it as fast as 2.194 +# possible, loading whole tracks whenever we can. 2.195 + 2.196 + movw syssize, %di 2.197 + decw %di 2.198 + shrclw $9-4, %di 2.199 + incw %di 2.200 + movw $SYSSEG, %cx 2.201 +#ifdef BZIMAGE 2.202 + push %cx 2.203 +#endif 2.204 + call read_sectorsCX 2.205 + 2.206 +# This procedure turns off the floppy drive motor, so 2.207 +# that we enter the kernel in a known state, and 2.208 +# don't have to worry about it later. 2.209 + 2.210 +kill_motor: 2.211 + xchgw %ax, %di # reset FDC (%di < 128) 2.212 + int $0x13 2.213 + 2.214 +# After that (everything loaded), we jump to the setup-routine 2.215 +# loaded directly after the bootblock: 2.216 +# Segments are as follows: %ds = %ss = INITSEG 2.217 + 2.218 +#ifdef BZIMAGE 2.219 + popw %bx 2.220 + popw %si // SYSSEG:0 2.221 +movesys: // %bx = DS, %si 2.222 + movw $16, %ax 2.223 + mulw %bx 2.224 + addw %si, %ax 2.225 + adcw $0x9300, %dx // %dx:%ax src flat address 2.226 + movw $9, %cx 2.227 +zero1: 2.228 + pushw $0 // 2E..1E 2.229 + loop zero1 2.230 + //pushl $0x93100000 // 1A: dest 2.231 + pushw $0x9310 2.232 + pushw %cx 2.233 + pushw $-1 // 18 2.234 + pushw %cx // 16 2.235 + pushw %dx // src 2.236 + pushw %ax 2.237 + pushw $-1 // 10 2.238 + movb $8, %cl 2.239 + movw %cx, %bx // will move 8*64 = 512Kb 2.240 +zero2: 2.241 + pushw $0 // 0E..00 2.242 + loop zero2 2.243 + movw %sp, %si 2.244 + pushw %ss 2.245 + popw %es 2.246 + pushw %es 2.247 + popw %ds 2.248 +syslp: 2.249 + movb $0x80, %ch 2.250 + movb $0x87, %ah 2.251 + int $0x15 2.252 + incb 0x14(%si) 2.253 + incb 0x1C(%si) 2.254 + decw %bx 2.255 + jne syslp 2.256 +#endif 2.257 +jmp_setup: 2.258 + cli 2.259 + ljmp $SETUPSEG, $0 2.260 + 2.261 +#ifdef EXE_SUPPORT 2.262 +#ifdef SHUTDOWNDOS 2.263 +doiret: 2.264 + iret 2.265 +step19: 2.266 + pushw %si 2.267 + pushw %ds 2.268 + movw %sp, %si 2.269 + ldsw %ss:4(%si), %si 2.270 + cmpw $0x19CD, (%si) 2.271 + popw %ds 2.272 + popw %si 2.273 + jne doiret 2.274 + xorw %si, %si 2.275 + movw %si, %ds 2.276 + pushw %cs 2.277 + popw %ss 2.278 + movw $stacktop-4-16, %sp 2.279 +#ifdef ONLY8086 2.280 + popw 4(%si) 2.281 + popw 4+2(%si) 2.282 + popw %bp 2.283 + popw %di 2.284 + popw %si 2.285 + popw %dx 2.286 + popw %cx 2.287 + popw %bx 2.288 + popw %ax 2.289 +#else 2.290 + popl 4(%si) 2.291 + popaw 2.292 +#endif 2.293 +#ifdef BZIMAGE 2.294 + jmp movesys 2.295 +#endif 2.296 +#endif 2.297 +#ifndef BZIMAGE 2.298 +movesys: // %ax = SYSSEG, %bx = DS, %si 2.299 + shrclw $4, %si 2.300 + addw %si, %bx 2.301 +#ifdef TINY_ZIMAGE 2.302 + movw $0xFFFF, %cx 2.303 + xorw %si, %si 2.304 + xorw %di, %di 2.305 + cmpw %ax, %bx 2.306 + jnc forward 2.307 + decw %si 2.308 + decw %di 2.309 + std 2.310 +forward: 2.311 + movw %ax, %es 2.312 + movw %bx, %ds 2.313 + rep 2.314 + movsb 2.315 + cld 2.316 +#else 2.317 + subw %ax, %bx 2.318 + jnc forward 2.319 + movb $0x90, %ah 2.320 + ;decw %ax 2.321 +forward: 2.322 + movw %ax, %es 2.323 + movw %ax, %di 2.324 + addw %bx, %di 2.325 + movw %di, %ds 2.326 + sbbw %di, %di // %di = 0 : -1 2.327 + cmc // C = 1 : 0 2.328 + adcw %di, %ax 2.329 + xorw %si, %si 2.330 + xorw %di, %di 2.331 + movb $0x10, %cl 2.332 + cmpb %cl, %ah // move 512k 2.333 + rep 2.334 + movsb 2.335 + jns forward 2.336 +#endif 2.337 +#ifndef NO_CURSOR_DEFINITION 2.338 + movb $1, %ah 2.339 + movb $0, %bh 2.340 + movb $0x20, %ch // 0x2000 2.341 + int $0x10 2.342 +#endif 2.343 + pushw %ss 2.344 + popw %ds 2.345 + jmp jmp_setup 2.346 +#endif 2.347 +comstart: 2.348 + cld # assume nothing 2.349 +#ifdef ONLY8086 2.350 + movw $INITSEG, %ax 2.351 + pushw %ax 2.352 +#else 2.353 + pushw $INITSEG 2.354 +#endif 2.355 + popw %es 2.356 +#ifdef CMDLINE 2.357 + movw %sp, %di 2.358 + movw $0x80, %si 2.359 + lodsb 2.360 + cbw 2.361 + xchgw %ax, %cx 2.362 + jcxz nocmdline 2.363 +# if defined(BZIMAGE) && BZIMAGE >= 0x202 2.364 + movw $INITSEG/16+stacktop/256, EXEADRS(cmd_line_ptr+1) 2.365 +# else 2.366 + movw $0xA33F, 0x7F(%si) 2.367 +# endif 2.368 +# ifndef NO_CMDLINE_SHRINK 2.369 +skipspace: 2.370 + lodsb 2.371 + cmpb $0x20, %al 2.372 + je skipspace 2.373 +# ifndef NO_CMDLINE_FILE 2.374 + movw %si,%dx 2.375 + decw %si 2.376 + subb $'@',%al 2.377 + jne notafile 2.378 + movb $0x3D,%ah 2.379 + int $0x21 2.380 + jc notafile 2.381 + xchgw %ax,%bx 2.382 + //movw %si,%dx // ~320 bytes max 2.383 + movw $EXEADRS(notafile)-130,%cx 2.384 + movb $0x3F,%ah 2.385 + int $0x21 2.386 + xchgw %ax,%cx 2.387 +notafile: 2.388 +# else 2.389 + decw %si 2.390 +# endif 2.391 +# endif 2.392 + rep 2.393 + movsb 2.394 +nocmdline: 2.395 + orb EXEADRS(setup_sects), %ch 2.396 +# ifndef NO_MINSETUP 2.397 +# ifndef BZIMAGE 2.398 + jnz setupok 2.399 + mov $4, %ch 2.400 +setupok: 2.401 +# endif 2.402 +# endif 2.403 +#else 2.404 + movb EXEADRS(setup_sects), %ch 2.405 +#endif 2.406 + movb $(512-(end_header-_start))/2, %cl 2.407 + movw $0x100, %si 2.408 + movw $end_header, %di 2.409 + rep 2.410 + movsw 2.411 + movw $SYSSEG, %ax 2.412 + movw %ds, %bx 2.413 + pushw %es 2.414 + popw %ss 2.415 +#ifndef SHUTDOWNDOS 2.416 + pushw %es 2.417 + pushw $movesys 2.418 +#endif 2.419 +#ifdef VCPI 2.420 + pushaw 2.421 + smsww %ax 2.422 + andb $1, %al 2.423 + je isrm 2.424 + movw $EXEADRS(gdt_vcpi),%si 2.425 + movw $pagebuf-0x90000,%di // %es = 0x9000 2.426 + movl $pagebuf+3,%es:0x1000(%di) 2.427 +call_vcpi: 2.428 + movb $0xDE,%ah // DE01, EBX = getiface(DS:SI, ES:DI) 2.429 + int $0x67 2.430 + movl $FLAT20(sw2pm_params),%esi 2.431 + movb $0x0C,%al // DE0C switchpm(ESI) 2.432 + jmp call_vcpi 2.433 +pm_code: 2.434 + movl %cr0,%eax 2.435 + andl $0x7FFFFFFE,%eax 2.436 + movl %eax,%cr0 2.437 + movl %eax,%cr3 2.438 +isrm: 2.439 +# ifdef SHUTDOWNDOS 2.440 + trace_int19 2.441 +# else 2.442 + lssw %cs:EXEADRS(saved_ss_sp),%sp 2.443 + popaw 2.444 + retf 2.445 +# endif 2.446 +#else 2.447 +# ifdef SHUTDOWNDOS 2.448 +# ifdef ONLY8086 2.449 + pushw %ax 2.450 + pushw %bx 2.451 + pushw %cx 2.452 + pushw %dx 2.453 + pushw %si 2.454 + pushw %di 2.455 + pushw %bp 2.456 +# else 2.457 + pushaw 2.458 +# endif 2.459 + trace_int19 2.460 +# endif 2.461 + retf 2.462 +#endif 2.463 +#endif 2.464 + 2.465 +# read_sectors reads %di sectors into %es:0 buffer. 2.466 +# %es:0 is updated to the next memory location. 2.467 +# First, sectors are read sector by sector until 2.468 +# sector per track count is known. Then they are 2.469 +# read track by track. 2.470 +# Assume no error on first track. 2.471 + 2.472 +#ifdef FLOPPY_1440K_ONLY 2.473 +#ifndef FLOPPY_HAS_2_SIDES 2.474 +#define FLOPPY_HAS_2_SIDES hardcore heads count to 2 2.475 +#endif 2.476 +#define FLOPPY_SECTORS 18 /* 18 sectors */ 2.477 +#else 2.478 +#define FLOPPY_HEADS 2 /* 2 heads minimum */ 2.479 +#endif 2.480 + 2.481 +return: 2.482 +#ifndef NO_DOTS 2.483 + movw $0xE2E,%ax 2.484 + int $0x10 2.485 +#endif 2.486 + ret 2.487 + 2.488 +check_limits: 2.489 +#ifndef FLOPPY_1440K_ONLY 2.490 + popw %dx 2.491 + cmpb %al, %cl # max sector known ? 2.492 + ja next_head # no -> store it 2.493 +#ifndef FLOPPY_HAS_2_SIDES 2.494 +#ifdef FLOPPY_HEADS 2.495 + cmpb $FLOPPY_HEADS, %dh # 2 heads minimum 2.496 + jb check_cylinder 2.497 +#endif 2.498 + cmpb %ah, %dh # max head known ? 2.499 + ja next_cylinder # no -> store it 2.500 +check_cylinder: 2.501 +#endif 2.502 + pushw %ax 2.503 + cbw # %ah = 0 2.504 +#else 2.505 + pushw %dx 2.506 +#endif 2.507 + int $0x13 # reset controler 2.508 +#ifndef FLOPPY_1440K_ONLY 2.509 + popw %ax 2.510 + movb $1, %al # sector by sector... 2.511 +#else 2.512 + movw $1, %ax 2.513 + jmp more1trk 2.514 +#endif 2.515 +read_sectorslp: 2.516 + pushw %dx # some bios break dx... 2.517 +#ifndef FLOPPY_1440K_ONLY 2.518 + pushw %ax # limits 2.519 + subb %cl, %al # sectors remaining in track 2.520 + ja tolastsect 2.521 + movb $1, %al # first track sector by sector 2.522 +tolastsect: 2.523 +#else 2.524 + movb $FLOPPY_SECTORS+1, %al 2.525 + subb %cl, %al # sectors remaining in track 2.526 +#endif 2.527 + cbw 2.528 + cmpw %di, %ax 2.529 + jb more1trk 2.530 + movw %di, %ax # sectors to read 2.531 +more1trk: 2.532 + pushw %ax # save context 2.533 + movb $2, %ah # cmd: read chs 2.534 + int $0x13 2.535 +#ifndef FLOPPY_1440K_ONLY 2.536 + popw %dx # save %ax 2.537 + popw %ax # limits 2.538 +#else 2.539 + popw %ax # restore context 2.540 + popw %dx 2.541 +#endif 2.542 + jc check_limits 2.543 +#ifndef FLOPPY_1440K_ONLY 2.544 + xchgw %ax, %bp 2.545 + addw %dx,%cx # next sector 2.546 + movw %cx, %si 2.547 + pushw %dx 2.548 + shlclw $5, %dx 2.549 + movw %es, %cx 2.550 + addw %dx, %cx 2.551 + popw %dx 2.552 + subw %dx,%di # update sector counter 2.553 + popw %dx 2.554 +#else 2.555 + addw %ax,%cx # next sector 2.556 + movw %cx, %si 2.557 + pushw %ax 2.558 + shlclw $5, %ax 2.559 + movw %es, %cx 2.560 + addw %ax, %cx 2.561 + popw %ax 2.562 + subw %ax,%di # update sector counter 2.563 +#endif 2.564 +read_sectorsCX: 2.565 + movw %cx, %es # next location 2.566 + jz return 2.567 +read_sectors: 2.568 + movw %si, %cx 2.569 +#ifndef FLOPPY_1440K_ONLY 2.570 +# al is last sector+1 2.571 +# ah is last head+1 2.572 + xchgw %ax, %bp 2.573 +#endif 2.574 +#ifndef FLOPPY_1440K_ONLY 2.575 + cmpb %al,%cl # reach sector limit ? 2.576 + jne bdendlp 2.577 +next_head: 2.578 + movb %cl,%al 2.579 +#else 2.580 + cmpb $FLOPPY_SECTORS+1,%cl # reach sector limit ? 2.581 + jne bdendlp 2.582 +#endif 2.583 + movb $1,%cl # first sector 2.584 +#ifndef FLOPPY_HAS_2_SIDES 2.585 + incb %dh # next head 2.586 + cmpb %ah, %dh # reach head limit ? 2.587 + jne bdendlp 2.588 +next_cylinder: 2.589 + movb %dh,%ah 2.590 + movb $0,%dh # first head 2.591 +#else 2.592 + xorb %cl,%dh # next head 2.593 + jne bdendlp # reach head limit ? 2.594 +#endif 2.595 +# NOTE : support 256 cylinders max 2.596 + incb %ch # next cylinder 2.597 +read_first_sectors: 2.598 +bdendlp: 2.599 + jmp read_sectorslp 2.600 + 2.601 +#ifdef VCPI 2.602 +pagebuf = 0x98000 2.603 +tss = gdt_abs-40 2.604 +gdt = gdt_abs-32 2.605 +gdt_null = gdt_abs-32 2.606 +gdt_vcpi = gdt_abs-24 2.607 +gdt_vcpi2 = gdt_abs-16 2.608 +gdt_vcpi3 = gdt_abs-8 2.609 +gdt_abs: 2.610 + .word 0xFFFF 2.611 + .long 0x92000000 2.612 + .byte 0xCF,0 2.613 +gdt_code: 2.614 + .word 0xFFFF 2.615 +gdt_code_base: 2.616 + .long 0x9A000000+FLAT20(0) 2.617 + .byte 0x8F,0 2.618 +gdt_tss: 2.619 + .word 0x00FF 2.620 +gdt_tss_base: 2.621 + .long 0x89000000+FLAT20(tss) 2.622 + .byte 0,0 2.623 +gdtr: 2.624 +gdt_lim: 2.625 + .word 0xFFFF 2.626 +gdt_base: 2.627 + .long FLAT20(gdt) 2.628 +sw2pm_params: 2.629 +sw2pm_cr3: 2.630 + .long pagebuf+0x1000 2.631 +sw2pm_gdtr_ptr: 2.632 + .long FLAT20(gdtr) 2.633 +sw2pm_idtr_ptr: 2.634 + .long FLAT20(idtr) 2.635 +sw2pm_ldtr: 2.636 + .word 0 2.637 +sw2pm_tr: 2.638 +SEL_TSS = gdt_tss-gdt_null 2.639 + .word SEL_TSS 2.640 +sw2pm_jumpaddr: 2.641 + .long pm_code 2.642 +SEL_CODE = gdt_code-gdt_null 2.643 + .word SEL_CODE 2.644 +idtr: 2.645 +idt_lim: 2.646 + .word 0x03FF 2.647 +idt_base: 2.648 + .long 0 2.649 +# ifndef SHUTDOWNDOS 2.650 +saved_ss_sp: 2.651 + .word stacktop-4-16-4,INITSEG 2.652 +# endif 2.653 +#endif 2.654 +#ifdef ELKS 2.655 + .org 0x1E3 2.656 + .byte 13,10,7 2.657 + .asciz "ELKS Boot" 2.658 +#endif
3.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000 3.2 +++ b/plop/stuff/pack Wed Aug 19 13:03:10 2020 +0000 3.3 @@ -0,0 +1,76 @@ 3.4 +#!/bin/sh 3.5 +if [ "$1" == "--build" ]; then 3.6 + set -- ${2:-bootloader.bin} ${3:-unpack.bin} 3.7 + x=$(grep -s packed_syssize$ ${2/.bin/.lst}|sed '$!d;s/.*t:\([^ ]*\).*/\1/') 3.8 + [ -n "$x" ] && sed -i "s/XXXP/$((513+0x$x))/" $0 || sed -i "/XXXP$/d" $0 3.9 + x=$(grep -s setup_byte$ ${2/.bin/.lst}|sed '$!d;s/.*t:\([^ ]*\).*/\1/') 3.10 + [ -n "$x" ] && sed -i "s/XXXSB/$((513+0x$x))/" $0 || sed -i "/XXXSB/d" $0 3.11 + x=$(grep -s setup_word$ ${2/.bin/.lst}|sed '$!d;s/.*t:\([^ ]*\).*/\1/') 3.12 + [ -n "$x" ] && sed -i "s/XXXSW/$((514+0x$x))/" $0 || sed -i "/XXXSW/d" $0 3.13 + x=$(grep -s setup_para$ ${2/.bin/.lst}|sed '$!d;s/.*t:\([^ ]*\).*/\1/') 3.14 + [ -n "$x" ] && sed -i "s/XXXSP/$((514+0x$x))/" $0 || sed -i "/XXXSP/d" $0 3.15 + x=$(grep -s setup_seg$ ${2/.bin/.lst}|sed '$!d;s/.*t:\([^ ]*\).*/\1/') 3.16 + [ -n "$x" ] && sed -i "s/XXXSS/$((513+0x$x))/" $0 || sed -i "/XXXSS/d" $0 3.17 + x=$(grep -s setup_keep$ ${2/.bin/.lst}|sed '$!d;s/.*t:\([^ ]*\).*/\1/') 3.18 + [ -n "$x" ] && sed -i "s/XXXK1/1/" $0 || sed -i "/XXXK1/d" $0 3.19 + [ -n "$x" ] && sed -i "s/skip=XXXK2 //" $0 || sed -i "s/XXXK2/1/" $0 3.20 + [ -n "$x" ] && sed -i "s/+XXXK3//" $0 || sed -i "s/XXXK3/1/" $0 3.21 + grep -q BFF401 ${2/.bin/.lst} && sed -i 's/512 skip/500 skip/;s/1000 -/&32 - /' $0 3.22 + grep -q 83C60D ${2/.bin/.lst} && sed -i 's/ | dd bs=1 skip=13//' $0 3.23 + helpmsg=$(grep -s helpmsg$ ${1/.bin/.lst}|sed '$!d;s/.*t:\([^ ]*\).*/\1/') 3.24 + helpend=$(grep -s helpend$ ${1/.bin/.lst}|sed '$!d;s/.*t:\([^ ]*\).*/\1/') 3.25 + if [ -n "$helpmsg" ]; then 3.26 + sed -i "s/YYY/$((0x$helpmsg))/" $0 3.27 + sed -i "s/ZZZ/$((0x$helpend-0x$helpmsg))/" $0 3.28 + else 3.29 + sed -i '/YYY/d' $0 3.30 + fi 3.31 + cat >> $0 <<EOM 3.32 +$(dd if=$1 bs=512 count=1 conv=sync 2> /dev/null | cat - $2 | gzip -9 | uuencode -m -) 3.33 +EOT 3.34 +EOM 3.35 + sed -i '/--build/,/^fi/d' $0 3.36 + exit 3.37 +fi 3.38 + 3.39 +store() 3.40 +{ 3.41 + n=$1 3.42 + for i in $(seq 1 ${4:-2}); do 3.43 + printf '\\\\x%02X' $(($n & 255)) 3.44 + n=$(($n >> 8)) 3.45 + done | xargs echo -en | dd conv=notrunc bs=1 of=$2 seek=$3 3.46 +} 3.47 + 3.48 +compress() 3.49 +{ 3.50 + xz -z -e --format=lzma --lzma1=mf=bt2 --stdout | dd bs=1 skip=13 3.51 +} 3.52 + 3.53 +main() 3.54 +{ 3.55 + uudecode | gunzip >$2 3.56 + dd if=$1 bs=1 skip=497 seek=497 count=15 of=$2 conv=notrunc 3.57 + setup="$(echo $(od -j 497 -N 1 -dAn $1))" 3.58 + [ $setup -eq 0 ] && setup=4 3.59 + setup=$(($setup+XXXK1)) 3.60 + store $setup $2 XXXSB 1 3.61 + store $setup $2 XXXSW 1 3.62 + store $((32 * $setup)) $2 XXXSP 3.63 + store $((0x1000 - 32*$setup)) $2 XXXSS 3.64 + dd if=$1 bs=512 skip=XXXK2 | compress >>$2 3.65 + size=$(stat -c %s $2) 3.66 + syssize=$((($size-512*($setup+XXXK3)+15)/16)) 3.67 + store $(($syssize + 0x1000)) $2 XXXP 3.68 + store $syssize $2 500 3.69 + store 4 $2 497 1 3.70 + store $((($size+511)/512)) $2 4 3.71 + store $((($size+15)/16)) $2 14 3.72 + echo -e "$3" | dd conv=notrunc bs=1 seek=YYY of=$2 count=ZZZ 3.73 +} 3.74 + 3.75 +HELP="$(unix2dos <<EOT 3.76 +Plop Boot Manager VERSION 3.77 +EOT 3.78 +)" 3.79 +main $1 ${2:-$1.packed} "${3:-$HELP}" 2>/dev/null <<EOT
4.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000 4.2 +++ b/plop/stuff/unlzma.S Wed Aug 19 13:03:10 2020 +0000 4.3 @@ -0,0 +1,1019 @@ 4.4 +// #define RC_NORMALIZE if (Range < kTopValue) { Range <<= 8; Code = (Code << 8) | RC_READ_BYTE; } 4.5 +// 4.6 +// #define IfBit0(p) RC_NORMALIZE; bound = (Range >> kNumBitModelTotalBits) * *(p); if (Code < bound) 4.7 +// #define UpdateBit0(p) Range = bound; *(p) += (kBitModelTotal - *(p)) >> kNumMoveBits; 4.8 +// #define UpdateBit1(p) Range -= bound; Code -= bound; *(p) -= (*(p)) >> kNumMoveBits; 4.9 +// 4.10 +//#define RC_GET_BIT2(p, mi, A0, A1) IfBit0(p) \ 4.11 +// { UpdateBit0(p); mi <<= 1; A0; } else \ 4.12 +// { UpdateBit1(p); mi = (mi + mi) + 1; A1; } 4.13 +// 4.14 +// #define RC_GET_BIT(p, mi) RC_GET_BIT2(p, mi, ; , ;) 4.15 +// 4.16 +// #define RangeDecoderBitTreeDecode(probs, numLevels, res) \ 4.17 +// { int i = numLevels; res = 1; \ 4.18 +// do { CProb *p = probs + res; RC_GET_BIT(p, res) } while(--i != 0); \ 4.19 +// res -= (1 << numLevels); } 4.20 +/* 4.21 + * Compression with : lzma e src dst -eos -pb2 -lp0 -lc3 4.22 + */ 4.23 + 4.24 +#define PROP_PB 2 4.25 +#define PROP_LP 0 4.26 +#define PROP_LC 3 4.27 +#define PROPS (PROP_LC+(PROP_LP*9)+(PROP_PB*45)) 4.28 + 4.29 +// static const Byte *Buffer; 4.30 +// static UInt32 bound, Code, Range; 4.31 + 4.32 +/* 4.33 + * Buffer register DS:SI 4.34 + * all var based ws=ss:bp 4.35 + */ 4.36 + 4.37 +rep0 = -4 // long 4.38 +rep1 = rep0-4 // long 4.39 +rep2 = rep0-8 // long 4.40 +rep3 = rep0-12 // long 4.41 +state = -17 // byte, 0..11 4.42 +posState = state-1 // byte, 0..15 4.43 +posState2 = posState-1 // byte, 0..15 4.44 +scratched = rep0-16 // byte = 1 4.45 +Code = -24 // long 4.46 +outStream = -28 // long 4.47 +nowPos = outStream // long 4.48 +Range = Code-8 // long 4.49 +#define LOCALS 32 4.50 + 4.51 +// int LzmaDecode(CLzmaDecoderState *vs, 4.52 +// const unsigned char *inStream, 4.53 +// unsigned char *outStream) 4.54 +// { 4.55 +// CProb *p = vs->Probs; 4.56 +// SizeT nowPos = 0; 4.57 +// #define posStateMask = (1 << (vs->Properties.pb)) - 1; 4.58 +// #define literalPosMask = (1 << (vs->Properties.lp)) - 1; 4.59 +// int lc = vs->Properties.lc, state = 0, len = 0; 4.60 +// UInt32 rep0 = 1, rep1 = 1, rep2 = 1, rep3 = 1; 4.61 +// 4.62 +// { 4.63 +// UInt32 i, numProbs = Literal /*1846*/ 4.64 +// + ((UInt32)LZMA_LIT_SIZE /*768*/ << (lc + vs->Properties.lp)); 4.65 +// for (i = 0; i < numProbs; i++) p[i] = kBitModelTotal /*2048*/ >> 1; 4.66 + 4.67 +#define WS (1846+(768<<(PROP_LC+PROP_LP))) 4.68 +#if (WS+WS+LOCALS) >= 65000 4.69 +/* MAX WS = (1846+(768<<(8+4))) > 3MB! */ 4.70 +#error invalid (lc,lp,pb) : out of memory 4.71 +#endif 4.72 + 4.73 +ws1 = WS 4.74 +ws2 = ws1*2 4.75 +ws = ws2+LOCALS+15 4.76 + 4.77 +#ifndef FLAT32 4.78 +#define AX %ax 4.79 +#define BX %bx 4.80 +#define CX %cx 4.81 +#define DX %dx 4.82 +#define SI %si 4.83 +#define DI %di 4.84 +#define BP %bp 4.85 +#define SP %sp 4.86 +#define CWD cwd 4.87 +#else 4.88 +#define AX %eax 4.89 +#define BX %ebx 4.90 +#define CX %ecx 4.91 +#define DX %edx 4.92 +#define SI %esi 4.93 +#define DI %edi 4.94 +#define BP %ebp 4.95 +#define SP %esp 4.96 +#define CWD cdq 4.97 +#endif 4.98 +/* 4.99 + * LzmaDecode: 4.100 +#ifndef FLAT32 4.101 + * input ds:si=inStream, es:di=outStream 4.102 + * output outStream[], ds:si, es:di 4.103 + .code 16 4.104 +#else 4.105 + * input esi=inStream, edi=outStream 4.106 + * output outStream[], esi, edi 4.107 + .code 32 4.108 +#endif 4.109 + */ 4.110 + 4.111 + mov $ws1, CX 4.112 +#ifdef ONLY8086 4.113 + movw $2048/2, %ax 4.114 +lzd1: 4.115 + pushw %ax 4.116 +#else 4.117 +lzd1: 4.118 + pushw $2048/2 4.119 +#endif 4.120 + loop lzd1 4.121 + mov SP, BP 4.122 + movb $((LOCALS+3)/4)*2, %cl 4.123 +#ifdef ONLY8086 4.124 + movw $1, %ax 4.125 + cwd 4.126 +initlocals: 4.127 + pushw %dx 4.128 + pushw %ax 4.129 +#else 4.130 +initlocals: 4.131 + pushl $1 4.132 +#endif 4.133 + loop initlocals 4.134 + 4.135 +#if !defined(FLAT32) && !defined(FLAT16OUT) 4.136 + movb $4, %cl 4.137 + movw %es, %bx 4.138 + shrw %cl, %bx 4.139 + movw %es, %dx 4.140 + shlw %cl, %dx 4.141 + addw %dx, %di 4.142 + movw %di, outStream(%bp) 4.143 + adcb %bh, outStream+2(%bp) 4.144 + incw %cx 4.145 +#else 4.146 + movb $5, %cl 4.147 + mov DI, outStream(BP) 4.148 +#endif 4.149 + 4.150 +// Byte previousByte = 0; 4.151 + xor BX, BX 4.152 + 4.153 +// #define RC_INIT(buffer) 4.154 +// Buffer = buffer; Code = 0; Range = 0xFFFFFFFF; 4.155 +// { int i; for(i=0; i<5; i++) { Code = (Code<<8) | RC_READ_BYTE; }} 4.156 +// } 4.157 +// RC_INIT(inStream); 4.158 + 4.159 +#ifndef NO_LZMA_HEADER 4.160 +#ifdef CHECK_LZMA_HEADER 4.161 + cmp.w $0x5A4C, (SI) // lzip header ('LZIP' version:1 dicobits:1) 4.162 + je lzip_header 4.163 + cmp.w $0x5D, (SI) // lzma header (0x5D dicosz:4 orgsz:8) 4.164 + jne no_header 4.165 + add $13-6, SI // skip lzma header 4.166 +lzip_header: 4.167 + add $6, SI // skip lzip header 4.168 +no_header: 4.169 +#else 4.170 + add $13, SI // skip lzma header (0x5D dicosz:4 orgsz:8) 4.171 +#endif 4.172 +#endif 4.173 +setrep: 4.174 + call RC_LOAD_BYTE 4.175 + decb Range(BP) 4.176 + loop setrep 4.177 + 4.178 +lzdmainlp: 4.179 +// while(1) { 4.180 +// CProb *prob; 4.181 +// int posState = (int)((nowPos) & posStateMask); 4.182 +// 4.183 +// prob = p + IsMatch /*0*/ + (state << kNumPosBitsMax /*4*/) + posState; 4.184 +// if (Bit0(prob)) { /* char */ 4.185 + 4.186 + xor DX, DX 4.187 + call Bit1state // Bit1(dx + (state << kNumPosBitsMax /*4*/) + posState) 4.188 + mov $state, DI 4.189 + jc lzdstring 4.190 + 4.191 +// prob = p + Literal /*1846*/ + (LZMA_LIT_SIZE /*768*/ * 4.192 +// ((((nowPos) & literalPosMask) << lc) + (previousByte >> (8 - lc)))); 4.193 + 4.194 +#if PROP_LC != 0 4.195 +# ifdef ONLY8086 4.196 + movb $8-PROP_LC, %cl 4.197 + shrb %cl, %bl 4.198 +# else 4.199 + shrb $8-PROP_LC, %bl 4.200 +# endif 4.201 +#endif 4.202 + 4.203 +#if PROP_LP != 0 4.204 + movb posState2(BP), %dl 4.205 +# ifdef ONLY8086 4.206 + movb $PROP_LC, %cl 4.207 + shl %cl, DX 4.208 +# else 4.209 + shl $PROP_LC, DX 4.210 +# endif 4.211 + movb $0, %bh 4.212 + add BX, DX 4.213 +#endif 4.214 + 4.215 + movb $3, %ah 4.216 + mul BX // dx = 3*bh 4.217 + add $1846, AX 4.218 + 4.219 +// int symbol = 1; 4.220 + 4.221 + CWD 4.222 + inc DX // symbol = 1 4.223 + xchg AX, CX // save prob 4.224 + 4.225 +// if (state >= kNumLitStates /*7*/) { /* previous was string */ 4.226 +// if (state < 4) state = 0; 4.227 + 4.228 +lzd6z: 4.229 + subb $3, (BP, DI) 4.230 + 4.231 +// if (state < 4) state = 0; 4.232 + 4.233 + jnc lzd6 4.234 + movb %dh, (BP, DI) // %dh = 0 4.235 + 4.236 +lzd6: 4.237 +// else if (state < 10) state -= 3; 4.238 + 4.239 + cmpb $10-3, (BP, DI) 4.240 + 4.241 +// else state -= 6; 4.242 + 4.243 + jnb lzd6z 4.244 + cmpb $7-3-1, (BP, DI) 4.245 + jbe lzd3 4.246 + 4.247 +// int matchByte = outStream[nowPos - rep0]; 4.248 + 4.249 + call DicoRep02ESDI // %bl = outStream[nowPos - rep0]; 4.250 + 4.251 +// do { 4.252 +// int bit; 4.253 +// CProb *probLit; 4.254 +// matchByte <<= 1; bit = (matchByte & 0x100); 4.255 + 4.256 + movb $1, %bh 4.257 +lzd4: 4.258 + shlb $1, %bl // matchByte <<= 1 4.259 + sbb DI, DI // save bit=C 4.260 + 4.261 +// probLit = prob + 0x100 + bit + symbol; 4.262 + 4.263 + mov CX, AX // restore prob 4.264 + adcb %bh, %ah // + bit + 0x100 4.265 + 4.266 +// RC_GET_BIT2(probLit, symbol, if (bit) break, if (!bit) break) 4.267 + 4.268 + call Bit1axdx // C,%ax = Bit1(prob+%ax) 4.269 + rclb $1, %dl // symbol <<= 1; symbol |= C 4.270 + jc lzd5 // if symbol >= 0x100 4.271 + cmp DI, AX 4.272 + jz lzd4 // if bit == Bit1(prob+%ax) 4.273 + 4.274 +// } while (symbol < 0x100); 4.275 +// } 4.276 +lzd3: 4.277 +// while (symbol < 0x100) { 4.278 +// CProb *probLit = prob + symbol; 4.279 +// RC_GET_BIT(probLit, symbol) 4.280 +// } 4.281 + 4.282 + xor BX, BX 4.283 + jmp lzd4 4.284 +lzd5: 4.285 + 4.286 +// outStream[nowPos++] = previousByte = (Byte)symbol; 4.287 + 4.288 + xchg AX, DX 4.289 + call outchar // %bl = outStream[nowPos++] = %al; 4.290 + jmp lzdmainlp 4.291 + 4.292 +// } 4.293 + 4.294 +lzdstring: 4.295 + mov $1, CX 4.296 + 4.297 +// else { /* string */ 4.298 +// prob = p + IsRep /*192*/ + state; 4.299 + 4.300 + movb $192, %dl 4.301 + addb (BP, DI), %dl 4.302 + mov $rep0, DI 4.303 + 4.304 +// if (Bit0(prob)) { 4.305 + 4.306 + call Bit1dx // Bit1(prob) 4.307 + jc lzd8 4.308 + 4.309 +// rep3 = rep2; rep2 = rep1; rep1 = rep0; 4.310 +// state = (state < kNumLitStates /*7*/) ? 0 : 3; 4.311 + 4.312 + stc 4.313 + 4.314 +// prob = p + LenCoder /*818*/; 4.315 + 4.316 + mov $818, DX 4.317 + 4.318 +// } 4.319 + 4.320 + jmp lzd11a 4.321 + 4.322 +// else { 4.323 +lzd8: 4.324 +// prob += kNumStates /*12*/; 4.325 +// if (Bit0(prob)) { 4.326 + call Bit1dx12 // prob += 12; Bit1(prob) 4.327 + jc lzd11 4.328 +// prob = p + IsRep0Long /*240*/ + (state << kNumPosBitsMax /*4*/) 4.329 +// + posState; 4.330 + movb $240, %dl // dh=0 4.331 + 4.332 +// if (Bit0(prob)) { 4.333 + 4.334 + call Bit1state // Bit1(dx + (state << kNumPosBitsMax /*4*/) + posState) 4.335 + jc lzd12 4.336 + 4.337 +// // if (nowPos == 0) return LZMA_RESULT_DATA_ERROR; 4.338 +// state = (state < kNumLitStates /*7*/) ? 9 : 11; 4.339 + 4.340 + movb $9, %dl 4.341 + 4.342 +// len++; goto string; 4.343 + jmp lzd13string // ax = 0 4.344 +// } 4.345 +// } 4.346 +// else { 4.347 +lzd11: 4.348 +// UInt32 distance = rep1; 4.349 +// prob += kNumStates /*12*/; 4.350 +// if (!Bit0(prob)) { 4.351 + 4.352 + call Bit1dx12 // prob += 12; Bit1(prob) 4.353 + jnc lzd11z 4.354 + 4.355 +// prob += kNumStates /*12*/; 4.356 +// if (Bit0(prob)) distance = rep2; 4.357 + 4.358 + call Bit1dx12 // prob += 12; Bit1(prob) 4.359 +lzd11a: 4.360 + adcb %cl, %cl 4.361 + 4.362 +// else { distance = rep3; rep3 = rep2; } 4.363 +// rep2 = rep1; 4.364 +// } 4.365 +// rep1 = rep0; rep0 = distance; 4.366 + 4.367 +lzd11z: 4.368 +# ifdef ONLY8086 4.369 + shl $1, CX 4.370 + shl $1, CX // 8->32 bits 4.371 + sub CX, DI // &rep[cx] 4.372 + movw (BP, DI), %ax 4.373 + pushw 2(BP, DI) 4.374 +rotreplp: 4.375 + movb 4(BP, DI), %bl 4.376 + movb %bl, (BP, DI) 4.377 + inc DI 4.378 + loop rotreplp 4.379 + popw %bx 4.380 + testb %dh, %dh 4.381 + jnz lzd10 4.382 + movw %ax, (BP, DI) 4.383 + movw %bx, 2(BP, DI) 4.384 +# else 4.385 + shl $2, CX // 8->32 bits 4.386 + sub CX, DI // &rep[cx] 4.387 + movl (BP, DI), %eax 4.388 +rotreplp: 4.389 + movb 4(BP, DI), %bl 4.390 + movb %bl, (BP, DI) 4.391 + inc DI 4.392 + loop rotreplp 4.393 + testb %dh, %dh 4.394 + jnz lzd10 4.395 + movl %eax, (BP, DI) 4.396 +# endif 4.397 + 4.398 +// } 4.399 +lzd12: 4.400 +// state = (state < kNumLitStates /*7*/) ? 8 : 11; 4.401 + 4.402 + movb $0x08, %cl 4.403 + 4.404 +// prob = p + RepLenCoder /*1332*/; 4.405 + 4.406 + mov $1332, DX 4.407 + 4.408 +// } 4.409 +lzd10: 4.410 + push CX // CX = 0 4.411 + 4.412 +// { /* get len */ 4.413 +// int numBits, offset; 4.414 +// CProb *probLen = prob + LenChoice /*0*/; 4.415 +// numBits = kLenNumLowBits /*3*/; 4.416 + 4.417 + movb $8, %cl // numBits : 3,3,8 4.418 + 4.419 +// if (Bit0(probLen)) { 4.420 + 4.421 + call Bit1dx // Bit1(prob) 4.422 + xchg AX, BX 4.423 + inc DX 4.424 + jnc lzd15 // bx=0 4.425 + 4.426 +// probLen = prob + LenLow/*2*/ + (posState << kLenNumLowBits/*3*/); 4.427 +// offset = 0; 4.428 +// } 4.429 +// else { 4.430 +// probLen = prob + LenChoice2 /*1*/; 4.431 + 4.432 + call Bit1dx // Bit1(prob) 4.433 + add AX, BX 4.434 + 4.435 +#if PROP_PB != 0 4.436 + inc AX // ah=0 4.437 +#endif 4.438 + jc lzd16 // %ax=0, %bx=-2 4.439 +lzd15: 4.440 +#if PROP_PB != 0 4.441 + movb $8, %al 4.442 + mulb posState(BP) 4.443 +#endif 4.444 + 4.445 +// if (Bit0(probLen)) { 4.446 +// probLen = prob + LenMid/*130*/ + (posState << kLenNumMidBits/*3*/); 4.447 + 4.448 + movb $3, %cl // numBits : 3,3,8 4.449 +lzd16: 4.450 +#if PROP_PB != 0 4.451 + add $2-128-1, AX // probLen : 2,130,258 4.452 +#else 4.453 + mov $2-128-1, AX // probLen : 2,130,258 4.454 +#endif 4.455 + add DX, AX 4.456 + mov $-8+1, DX // offset : 0,8,16 4.457 +lzdargslp: 4.458 + add $8, DX 4.459 + add $128, AX 4.460 + inc BX 4.461 + jle lzdargslp // leave with bx=1 4.462 + 4.463 +// offset = kLenNumLowSymbols /*8*/; 4.464 +// //numBits = kLenNumMidBits /*3*/; 4.465 +// } 4.466 +// else { 4.467 +// probLen = prob + LenHigh /*258*/; 4.468 +// offset = kLenNumLowSymbols /*8*/ + kLenNumMidSymbols /*8*/; 4.469 +// numBits = kLenNumHighBits /*8*/; 4.470 +// } 4.471 +// } 4.472 +// RangeDecoderBitTreeDecode(probLen, numBits, len); len += offset; 4.473 + 4.474 + push DX 4.475 + call RangeDecoder // %ax=probs, %cx=numLevels, %ax=res 4.476 + pop DX 4.477 + add DX, AX // offset 4.478 + pop DX // 0 4.479 +lzd13string: 4.480 + push AX 4.481 + 4.482 +// state = (state < kNumLitStates /*7*/) ? dl : dl|3; 4.483 + 4.484 + movb $7, %cl 4.485 + cmpb %cl, state(BP) 4.486 + jb new_state 4.487 + orb $3, %dl 4.488 +new_state: 4.489 + movb %dl, state(BP) 4.490 + 4.491 +// } /* get len */ 4.492 +// if (state < 4) { 4.493 + 4.494 + cmpb $4-1, %dl 4.495 + ja lzd19 4.496 + 4.497 +// int posSlot; 4.498 +// state += kNumLitStates /*7*/; 4.499 + 4.500 + addb %cl, state(BP) 4.501 + 4.502 +// prob = p + PosSlot /*432*/ + (((len < kNumLenToPosStates /*4*/) ? 4.503 +// len : kNumLenToPosStates - 1) << kNumPosSlotBits /*6*/); 4.504 + 4.505 + cmp $4+1, AX 4.506 + jb lzd21 4.507 + mov $3+1, AX 4.508 + 4.509 +lzd21: 4.510 + 4.511 + dec CX // cx = 6 4.512 + shl %cl, AX 4.513 + add $432-64, AX 4.514 + 4.515 +// RangeDecoderBitTreeDecode(prob, kNumPosSlotBits /*6*/, posSlot); 4.516 + 4.517 + call RangeDecoder // %ax=probs, %cx=numLevels, %ax=res 4.518 + 4.519 +// if (posSlot >= kStartPosModelIndex /*4*/) { 4.520 +// int numDirectBits = ((posSlot >> 1) - 1); 4.521 + 4.522 +#ifndef FLAT32 4.523 + movw %cx, 2(%bp, %di) // %cx = 0 4.524 +#endif 4.525 + mov AX, (BP, DI) 4.526 + mov AX, CX 4.527 + shrw $1, CX 4.528 + dec CX 4.529 + cmpb $4, %al 4.530 + jb lzd22 4.531 + 4.532 +// rep0 = (2 | ((UInt32)posSlot & 1)); 4.533 + 4.534 + andb %bl, (BP, DI) // %bx=1 4.535 + orb $2, (BP, DI) 4.536 + 4.537 +// if (posSlot < kEndPosModelIndex /*14*/) { 4.538 + 4.539 + cmpb $14, %al 4.540 + jnb lzd23 4.541 + 4.542 +// rep0 <<= numDirectBits; 4.543 + 4.544 + neg AX 4.545 +# ifdef ONLY8086 4.546 + pushw %cx 4.547 + movb $0, %ch 4.548 +shllrep0: 4.549 + shlw $1, (BP, DI) 4.550 + rclw $1, 2(BP, DI) 4.551 + loop shllrep0 4.552 + popw %cx 4.553 +# else 4.554 + shll %cl, (BP, DI) 4.555 +# endif 4.556 + add (BP, DI), AX 4.557 + 4.558 +// prob = p + SpecPos /*688*/ + rep0 - posSlot - 1; 4.559 + 4.560 + add $687, AX 4.561 + jmp lzd24 4.562 + 4.563 +// } 4.564 +// else { 4.565 +lzd23: 4.566 +// numDirectBits -= kNumAlignBits /*4*/; 4.567 +// do { 4.568 +// RC_NORMALIZE; Range >>= 1; rep0 <<= 1; 4.569 +// if (Code >= Range) { Code -= Range; rep0 |= 1; } 4.570 + 4.571 +lzd23z: 4.572 + call RC_NORMALIZE 4.573 +# ifdef ONLY8086 4.574 + pushw %dx 4.575 + shrw $1, Range+2(BP) 4.576 + rcrw $1, Range(BP) 4.577 + movw Range(BP), %ax 4.578 + movw Range+2(BP), %dx 4.579 + cmpw Code+2(BP), %dx 4.580 + ja lzd25 4.581 + jb lzd25x 4.582 + cmpw Code(BP), %ax 4.583 + ja lzd25 4.584 +lzd25x: 4.585 + subw %ax, Code(BP) 4.586 + sbbw %dx, Code+2(BP) 4.587 + stc 4.588 +lzd25: 4.589 + popw %dx 4.590 + rclw $1, (BP, DI) 4.591 + rclw $1, 2(BP, DI) 4.592 +# else 4.593 + shrl $1, Range(BP) 4.594 + movl Range(BP), %eax 4.595 + cmpl Code(BP), %eax 4.596 + ja lzd25 4.597 + subl %eax, Code(BP) 4.598 + stc 4.599 +lzd25: 4.600 + rcll $1, (BP, DI) 4.601 +# endif 4.602 + 4.603 +// } while (--numDirectBits != 0); 4.604 + 4.605 + cmpb $4+1, %cl 4.606 + loopne lzd23z 4.607 + 4.608 +// prob = p + Align /* 802 */; numDirectBits = kNumAlignBits /*4*/; 4.609 +// rep0 <<= numDirectBits; 4.610 + 4.611 +# ifdef ONLY8086 4.612 + pushw %cx 4.613 + movb $0, %ch 4.614 +shlrep0: 4.615 + shlw $1, (BP, DI) 4.616 + rclw $1, 2(BP, DI) 4.617 + loop shlrep0 4.618 + popw %cx 4.619 +# else 4.620 + shll %cl, (BP, DI) 4.621 +# endif 4.622 + mov $802, AX 4.623 +// } 4.624 + 4.625 +lzd24: 4.626 + call RangeDecoder // %ax=probs, %cx=numLevels, %ax=res 4.627 + 4.628 +// { 4.629 +// int i = 1, mi = 1; 4.630 +// do { 4.631 +// CProb *prob3 = prob + mi; 4.632 +// RC_GET_BIT2(prob3, mi, ; , rep0 |= i); 4.633 + 4.634 + orb %dh, (BP, DI) // update rep0 with DirectBits 4.635 + 4.636 +// i <<= 1; 4.637 +// } while(--numDirectBits != 0); 4.638 +// } 4.639 +// } else rep0 = posSlot; 4.640 +lzd22: 4.641 +// if (++rep0 == (UInt32)(0)) break; /* EOF */ 4.642 + 4.643 +# ifdef ONLY8086 4.644 + incw (BP, DI) 4.645 + jnz lzd19 4.646 + incw 2(BP, DI) 4.647 +# else 4.648 + incl (BP, DI) 4.649 +# endif 4.650 + 4.651 +lzd19: 4.652 + pop CX 4.653 + jz lzdone 4.654 + 4.655 +// } 4.656 +// len += kMatchMinLen;/*2*/ 4.657 + 4.658 + inc CX 4.659 + 4.660 +// string: // if (rep0 > nowPos) return LZMA_RESULT_DATA_ERROR; 4.661 +// do { 4.662 +lzd13z: 4.663 +// previousByte = outStream[nowPos - rep0]; 4.664 +// outStream[nowPos++] = previousByte; 4.665 + 4.666 + call outcharDico // %bl = outStream[nowPos++] = outStream[nowPos - rep0] 4.667 + 4.668 +// } while(--len != 0); 4.669 + 4.670 + loop lzd13z 4.671 + 4.672 +// } /* char/string */ 4.673 +// } 4.674 + 4.675 + jmp lzdmainlp 4.676 + 4.677 +lzdone: 4.678 +// //RC_NORMALIZE; 4.679 +// //*inSizeProcessed = (SizeT)(Buffer - inStream); *outSizeProcessed = nowPos; 4.680 +// return LZMA_RESULT_OK; 4.681 + call Dico2ESDI // set es & di (rep0 = 0) 4.682 + lea ws2(BP), SP // dealloc 4.683 + ret 4.684 +// } 4.685 + 4.686 +// al = outStream[nowPos - rep0]; 4.687 + 4.688 +/* 4.689 + * output es:di, al 4.690 + * scratch bh, cl, flags 4.691 + */ 4.692 + 4.693 +DicoRep02ESDI: 4.694 + stc 4.695 + 4.696 +// bl = outStream[nowPos]; 4.697 + 4.698 +/* 4.699 + * output es:di, bl 4.700 + * scratch bh, cl, flags 4.701 + */ 4.702 + 4.703 +Dico2ESDI: 4.704 +#if !defined(FLAT32) && !defined(FLAT16OUT) 4.705 +# ifdef ONLY8086 4.706 + pushw %ax 4.707 + movw nowPos(%bp), %bx 4.708 + movw nowPos+2(%bp), %ax 4.709 + jnc Dico2ESDIz 4.710 + subw rep0(%bp), %bx 4.711 + sbbw rep0+2(%bp), %ax 4.712 +Dico2ESDIz: 4.713 + movw $0xF, %di 4.714 + andw %bx, %di 4.715 + pushw %cx 4.716 + movb $4, %cl 4.717 + shrw %cl, %bx 4.718 + shlw %cl, %ax 4.719 + popw %cx 4.720 + addb %al, %bh 4.721 + popw %ax 4.722 +# else 4.723 + movl nowPos(%bp), %ebx 4.724 + jnc Dico2ESDIz 4.725 + subl rep0(%bp), %ebx 4.726 +Dico2ESDIz: 4.727 + movw %bx, %di 4.728 + xorw %bx, %bx 4.729 + shrl $4, %ebx 4.730 +# endif 4.731 + movw %bx, %es 4.732 +#else 4.733 + mov nowPos(BP), DI 4.734 + jnc Dico2ESDIz 4.735 + sub rep0(BP), DI 4.736 +Dico2ESDIz: 4.737 +#endif 4.738 +#ifdef FLAT32 4.739 + movb (DI), %bl 4.740 +#else 4.741 + movb %es:(%di), %bl 4.742 +#endif 4.743 + ret 4.744 + 4.745 +outcharDico: 4.746 + 4.747 +// bl = outStream[nowPos++] = outStream[nowPos - rep0] 4.748 + 4.749 +/* 4.750 + * output es:di, bl 4.751 + * update nowPos 4.752 + * scratch ax, dx, bh, cl, flags 4.753 + */ 4.754 + 4.755 + call DicoRep02ESDI // %bl = outStream[nowPos - rep0] 4.756 + xchg AX, BX 4.757 +outchar: 4.758 + 4.759 +// bl = outStream[nowPos++] = previousByte = al; 4.760 + 4.761 +/* 4.762 + * output bl 4.763 + * update nowPos 4.764 + * scratch ax, dx, bh, di, cl, flags 4.765 + */ 4.766 + 4.767 + clc 4.768 + call Dico2ESDI 4.769 + stosb 4.770 + xchg AX, BX // previous byte 4.771 + 4.772 +// int posState = (int)((nowPos) & posStateMask); 4.773 + 4.774 +#if PROP_PB != 0 && PROP_LP != 0 4.775 + addw $0x0101, posState2(BP) 4.776 + andb $(((1 << PROP_PB) -1)<<8)+((1 << PROP_LP) -1), posState2(BP) 4.777 +#else 4.778 +# if PROP_PB != 0 4.779 + incb posState(BP) 4.780 + andb $((1 << PROP_PB) -1), posState(BP) 4.781 +# endif 4.782 +# if PROP_LP != 0 4.783 + incb posState2(BP) 4.784 + andb $((1 << PROP_LP) -1), posState2(BP) 4.785 +# endif 4.786 +#endif 4.787 +#ifdef ONLY8086 4.788 + incw nowPos(BP) 4.789 + jnz incnowPosDone 4.790 + incw nowPos+2(BP) 4.791 +incnowPosDone: 4.792 +#else 4.793 + incl nowPos(BP) 4.794 +#endif 4.795 + ret 4.796 + 4.797 +// 4.798 +// #define RC_NORMALIZE if (Range < kTopValue) 4.799 +// { Range <<= 8; Code = (Code << 8) | RC_READ_BYTE; } 4.800 + 4.801 +/* 4.802 + * update Range, Code, ds:si 4.803 + * scratch flags 4.804 + */ 4.805 + 4.806 +RC_NORMALIZE: 4.807 + cmpb $0, Range+3(BP) 4.808 + jne RC_NORMALIZE_1 4.809 +RC_LOAD_BYTE: 4.810 + push AX 4.811 +#ifdef ONLY8086 4.812 + movw Range+1(BP), %ax 4.813 + movw %ax, Range+2(BP) 4.814 + movw Code+1(BP), %ax 4.815 + movw %ax, Code+2(BP) 4.816 + xorw %ax, %ax 4.817 + movb Range(BP), %ah 4.818 + movw %ax, Range(BP) 4.819 + movb Code(BP), %ah 4.820 + movw %ax, Code(BP) 4.821 +#else 4.822 + shll $8, Range(BP) 4.823 + shll $8, Code(BP) 4.824 +#endif 4.825 +#if !defined(FLAT16) && !defined(FLAT32) 4.826 + testw %si, %si 4.827 + jns RC_READ_BYTE 4.828 + movw %ds, %ax 4.829 + incw %ax 4.830 + movw %ax, %ds 4.831 + addw $-16, %si 4.832 +RC_READ_BYTE: 4.833 +#endif 4.834 + lodsb 4.835 + movb %al, Code(BP) 4.836 + pop AX 4.837 +RC_NORMALIZE_1: 4.838 + ret 4.839 + 4.840 +// Bit1(dx + (state << kNumPosBitsMax /*4*/) + posState) 4.841 + 4.842 +Bit1state: 4.843 + movb $16, %al 4.844 + mulb state(BP) 4.845 +# if PROP_PB != 0 4.846 + addb posState(BP), %al 4.847 +# endif 4.848 +Bit1axdx: 4.849 + add DX, AX 4.850 + jmp Bit1 4.851 + 4.852 +// prob += 12; Bit1(prob) 4.853 + 4.854 +Bit1dx12: 4.855 + add $12, DX 4.856 +Bit1dx: 4.857 + mov DX, AX 4.858 + 4.859 +// static int Bit1(CProb *p) 4.860 + 4.861 +Bit1: 4.862 +/* 4.863 + * input ax=p 4.864 + * output C, ax 4.865 + * update bound, Range, Code, ds:si 4.866 + * scratch flags 4.867 + */ 4.868 + 4.869 +// { 4.870 +// RC_NORMALIZE; 4.871 + 4.872 + call RC_NORMALIZE // kill %ax, update %si 4.873 + 4.874 +#ifdef ONLY8086 4.875 + pushw %ax 4.876 + pushw %cx 4.877 + pushw %dx 4.878 + pushw %di 4.879 +#else 4.880 + pushal 4.881 +#endif 4.882 + 4.883 + xchg AX, DI 4.884 + add DI, DI // short * 4.885 + 4.886 + 4.887 +// bound = (Range>>kNumBitModelTotalBits /*11*/) * *(p); 4.888 + 4.889 +#ifdef ONLY8086 4.890 + movw Range(BP), %dx 4.891 + movw Range+2(BP), %ax 4.892 + movw $11, %cx 4.893 +shr11lp: 4.894 + shrw $1, %ax 4.895 + rcrw $1, %dx 4.896 + loop shr11lp 4.897 + movw %dx, %cx 4.898 + mulw (BP, DI) 4.899 + xchgw %ax, %cx 4.900 + mulw (BP, DI) 4.901 + addw %cx, %dx 4.902 +#else 4.903 + movl Range(BP), %eax 4.904 + shrl $11, %eax 4.905 + movzwl (BP, DI), %edx 4.906 + mull %edx 4.907 +#endif 4.908 + 4.909 +// if (Code < bound) { 4.910 + 4.911 +#ifdef ONLY8086 4.912 + cmpw Code+2(BP), %dx 4.913 + jb Bit1_1 4.914 + ja Bit1_1x 4.915 + cmpw Code(BP), %ax 4.916 + jbe Bit1_1 4.917 +Bit1_1x: 4.918 + 4.919 +// Range = bound; 4.920 + 4.921 + movw %ax, Range(BP) 4.922 + movw %dx, Range+2(BP) 4.923 +#else 4.924 + cmpl Code(BP), %eax 4.925 + jbe Bit1_1 4.926 + 4.927 +// Range = bound; 4.928 + 4.929 + movl %eax, Range(BP) 4.930 +#endif 4.931 + 4.932 +// *(p) += (kBitModelTotal /*2048*/ - *(p)) >> kNumMoveBits /*5*/; 4.933 + 4.934 + movw $2048, %ax 4.935 + 4.936 +// return 0; 4.937 + 4.938 + jmp Bit1_2 4.939 + 4.940 +// } 4.941 +// else { 4.942 + 4.943 +Bit1_1: 4.944 + 4.945 +// Range -= bound; Code -= bound; 4.946 + 4.947 +#ifdef ONLY8086 4.948 + subw %ax, Range(BP) 4.949 + sbbw %dx, Range+2(BP) 4.950 + subw %ax, Code(BP) 4.951 + sbbw %dx, Code+2(BP) 4.952 +#else 4.953 + subl %eax, Range(BP) 4.954 + subl %eax, Code(BP) 4.955 +#endif 4.956 + 4.957 +// *(p) -= (*(p)) >> kNumMoveBits /*5*/; 4.958 + 4.959 + movw $31, %ax 4.960 + 4.961 +// return 1; 4.962 + 4.963 + stc 4.964 +Bit1_2: 4.965 + pushf 4.966 + subw (BP, DI), %ax 4.967 +#ifdef ONLY8086 4.968 + movb $5, %cl 4.969 + sarw %cl, %ax 4.970 +#else 4.971 + sarw $5, %ax 4.972 +#endif 4.973 + addw %ax, (BP, DI) 4.974 + popf 4.975 +#ifdef ONLY8086 4.976 + popw %di 4.977 + popw %dx 4.978 + popw %cx 4.979 + popw %ax 4.980 +#else 4.981 + popal 4.982 +#endif 4.983 + sbb AX, AX 4.984 + 4.985 +// } 4.986 +// } 4.987 + 4.988 + ret 4.989 + 4.990 +RangeDecoder: 4.991 + 4.992 +/* 4.993 + * input ax=probs cx=numLevels (< 8) bx=1 4.994 + * output ax=res (backward), dh (forward) 4.995 + * update bound, Range, Code, ds:si 4.996 + * scratch flags, cx=0, dl 4.997 + */ 4.998 + 4.999 + push BX 4.1000 + 4.1001 +// { int i = numLevels; res = 1; 4.1002 + mov BX, DX // res = 1 4.1003 + 4.1004 +// do { CProb *p = probs + res; RC_GET_BIT(p, res) } while(--i != 0); 4.1005 + 4.1006 +RangeDecoder_1: 4.1007 + push AX 4.1008 + call Bit1axdx // C,%ax = Bit1(prob+%ax) 4.1009 + rclb $1, %dl // res <<= 1; res |= C 4.1010 + andb %bl, %al // current bit 4.1011 + orb %al, %bh // store in bh 4.1012 + shlb $1, %bl // update max 4.1013 + pop AX 4.1014 + loop RangeDecoder_1 4.1015 + 4.1016 +// res -= (1 << numLevels); } 4.1017 + 4.1018 + xchg AX, BX // move bh to dh 4.1019 + xchg AX, DX // and dl to al 4.1020 + sub %dl, %al // sub max 4.1021 + pop BX 4.1022 + ret
5.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000 5.2 +++ b/plop/stuff/unpack.S Wed Aug 19 13:03:10 2020 +0000 5.3 @@ -0,0 +1,364 @@ 5.4 +#define SYSTEM 0x10000 5.5 +#define SETUP 14 5.6 +#define SYSSIZE 0x1F4 5.7 +#define SETUPSIZE 0x1F1 5.8 + 5.9 +#define KEEP_BOOTSECTOR 1 5.10 +#define LINUX_HEADER 0 5.11 +#define UPDATE_SYSSIZE 1 5.12 +#define HARDCODED_SYSSIZE 1 5.13 +#define HARDCODED_SETUPSIZE 1 5.14 +#define FLAT16 1 5.15 +#define FLAT16OUT 1 5.16 +#define SAVEREGS 0 5.17 +#define ELKS 0 5.18 + 5.19 + .text 5.20 + .code16 5.21 + .org 0 5.22 + 5.23 +#if KEEP_BOOTSECTOR 5.24 +#undef UPDATE_SYSSIZE 5.25 +#define UPDATE_SYSSIZE 0 5.26 +#endif 5.27 +#if defined(FLAT16OUT) && FLAT16OUT == 0 5.28 +#undef FLAT16OUT 5.29 +#endif 5.30 +#if ELKS 5.31 + .arch i8086 5.32 +#define FLAT16 1 5.33 +#define LINUX_HEADER 0 5.34 +#define SAVEREGS 0 5.35 +#define TOPSEG 0x2000 5.36 +#else 5.37 +#define TOPSEG 0x8000 5.38 +#endif 5.39 + 5.40 + .globl _start 5.41 +_start: 5.42 +#if LINUX_HEADER 5.43 + jmp start2 5.44 + .ascii "HdrS" // 202 magic 5.45 + .word 0x200 // 206 version 2.00 5.46 + .long 0 // 208 realmode_swtch 5.47 + .word SYSTEM/16 // 20C start_sys_seg 5.48 + .word 0 // 20E kernel_version 5.49 + .byte 0 // 210 type_of_loader 5.50 + .byte 0 // 211 loadflags 5.51 + .word 0 // 212 setup_move_size 5.52 + .long SYSTEM // 214 code32_start 5.53 + .long 0 // 218 ramdisk_image 5.54 + .long 0 // 21C ramdisk_size 5.55 + .long 0 // 220 bootsect_kludge 5.56 +start2: 5.57 +#endif 5.58 +#if SAVEREGS 5.59 + pushfw 5.60 + pushw %cs 5.61 + pushw $0 5.62 + pushal 5.63 + pushw %ds 5.64 + cld 5.65 +#else 5.66 + pushw %cs 5.67 +# if FLAT16 5.68 + xorw %di, %di 5.69 + pushw %di 5.70 +# else 5.71 + pushw $0 5.72 +# endif 5.73 +#endif 5.74 +#if ELKS 5.75 + movw $0x100, %ax 5.76 + pushw %ax 5.77 +#else 5.78 +# if UPDATE_SYSSIZE || KEEP_BOOTSECTOR 5.79 + pushw %ds // <A> 5.80 +# else 5.81 + pushw %cs // <A> 5.82 +# endif 5.83 +#endif 5.84 +#if FLAT16 5.85 +# 1- move 9000/9020..9020+stp -> TOPSEG 5.86 +#if ELKS 5.87 + movb $TOPSEG/256, %ah 5.88 + movw %ax, %es 5.89 +#else 5.90 + pushw $TOPSEG 5.91 + popw %es 5.92 +#endif 5.93 +#if KEEP_BOOTSECTOR 5.94 + xorw %si, %si 5.95 +#else 5.96 + movw $0x200, %si 5.97 +#endif 5.98 +#if SAVEREGS == 0 5.99 + pushw %es 5.100 +#if ELKS 5.101 +# if KEEP_BOOTSECTOR 5.102 + movw $cont+0x200, %ax 5.103 +# else 5.104 + movw $cont, %ax 5.105 +# endif 5.106 + pushw %ax 5.107 +#else 5.108 +# if KEEP_BOOTSECTOR 5.109 + pushw $cont+0x200 5.110 +# else 5.111 + // pushw $cont 5.112 + .byte 0x6A, cont 5.113 +# endif 5.114 +#endif 5.115 + jmp jumpinto 5.116 +#else 5.117 +# if HARDCODED_SETUPSIZE 5.118 +setup_word: 5.119 +# if KEEP_BOOTSECTOR 5.120 +# else 5.121 + movw $SETUP*256, %cx 5.122 +# endif 5.123 +# else 5.124 +# if KEEP_BOOTSECTOR 5.125 + movw $0x100, %cx 5.126 + addb SETUPSIZE, %ch 5.127 +# else 5.128 + xorw %cx, %cx 5.129 + movb SETUPSIZE, %ch 5.130 +# endif 5.131 + movw %cx, %dx 5.132 +# endif 5.133 + pushw %cx // <B> 5.134 + pushw %es 5.135 + pushw %di 5.136 + rep 5.137 + movsw 5.138 + lret 5.139 +#endif 5.140 +cont: 5.141 +# 2- move 1000..1000+sys -> TOPSEG+stp 5.142 +#if ELKS 5.143 + movw $0x1000, %ax 5.144 + movw %ax, %ds 5.145 +#else 5.146 + pushw $0x1000 5.147 + popw %ds 5.148 +#endif 5.149 + xorw %si, %si 5.150 + subw %di, %cx 5.151 + rep 5.152 + movsb 5.153 +# 3- unlz(TOPSEG+stp:end, 1000-stp:0) 5.154 + pushw %es // <C> 5.155 +# if HARDCODED_SETUPSIZE 5.156 +setup_seg: 5.157 +#if ELKS 5.158 +# if KEEP_BOOTSECTOR 5.159 +# if UPDATE_SYSSIZE 5.160 + movw $0x1000-(SETUP*32)-32-32, %ax 5.161 +# else 5.162 + movw $0x1000-(SETUP*32)-32, %ax 5.163 +# endif 5.164 +# else 5.165 +# if UPDATE_SYSSIZE 5.166 + movw $0x1000-(SETUP*32)-32, %ax 5.167 +# else 5.168 + movw $0x1000-(SETUP*32), %ax 5.169 +# endif 5.170 +# endif 5.171 + movw %ax, %es 5.172 +#else 5.173 +# if KEEP_BOOTSECTOR 5.174 +# if UPDATE_SYSSIZE 5.175 + pushw $0x1000-(SETUP*32)-32-32 5.176 +# else 5.177 + pushw $0x1000-(SETUP*32)-32 5.178 +# endif 5.179 +# else 5.180 +# if UPDATE_SYSSIZE 5.181 + pushw $0x1000-(SETUP*32)-32 5.182 +# else 5.183 + pushw $0x1000-(SETUP*32) 5.184 +# endif 5.185 +# endif 5.186 + popw %es 5.187 +#endif 5.188 +# else 5.189 +# if UPDATE_SYSSIZE 5.190 + incb %dh 5.191 +# endif 5.192 +#if ELKS 5.193 + shrw $1, %dx 5.194 + shrw $1, %dx 5.195 + shrw $1, %dx 5.196 +#else 5.197 + shrw $3, %dx 5.198 +#endif 5.199 + movw %ds, %ax 5.200 + subw %dx, %ax 5.201 + movw %ax, %es 5.202 +# endif 5.203 +#else // FLAT16 5.204 +# 1- move 1000..1000+sys -> 9000-sys 5.205 +# if HARDCODED_SYSSIZE 5.206 +packed_syssize: 5.207 + movw $0x1000+0, %ax 5.208 +# else 5.209 + movw SYSSIZE, %ax 5.210 + addw $0x1000, %ax 5.211 +# endif 5.212 + movw %ds, %dx 5.213 +mvsys: 5.214 + decw %ax 5.215 + decw %dx 5.216 + movw %ax, %ds 5.217 + movw %dx, %es 5.218 + xorw %si, %si 5.219 + xorw %di, %di 5.220 + movw $8, %cx 5.221 + rep 5.222 + movsw 5.223 + cmpw $0x1000, %ax 5.224 + jne mvsys 5.225 +# 2- move 9000/9020..9020+stp -> 9000-sys-stp 5.226 + 5.227 +# if HARDCODED_SETUPSIZE 5.228 +# if KEEP_BOOTSECTOR 5.229 +setup_byte: 5.230 + movb $SETUP+1, %ch 5.231 +setup_para: 5.232 + subw $SETUP*32+32, %dx 5.233 +# else 5.234 +setup_byte: 5.235 + movb $SETUP, %ch 5.236 +setup_para: 5.237 + subw $SETUP*32, %dx 5.238 +# endif 5.239 +# else 5.240 + movb %ss:SETUPSIZE, %ch 5.241 +# if KEEP_BOOTSECTOR 5.242 + incb $ch 5.243 +# endif 5.244 + movw %cx, %ax 5.245 +#if ELKS 5.246 + shrw $1, %ax 5.247 + shrw $1, %ax 5.248 + shrw $1, %ax 5.249 +#else 5.250 + shrw $3, %ax 5.251 +#endif 5.252 + subw %ax, %dx 5.253 +# endif 5.254 + pushw %cx // <B> 5.255 + movw %dx, %es 5.256 + xorw %si, %si 5.257 + xorw %di, %di 5.258 + rep 5.259 + movsw %cs:(%si),%es:(%di) 5.260 + pushw %es 5.261 +# 3- reloc itself in 0x7C00 5.262 + pushw $0x07C0 5.263 + popw %es 5.264 + movw $cont, %si 5.265 + movw %si, %di 5.266 + movw $end-_start, %cx 5.267 + pushw %es 5.268 + pushw %di 5.269 + rep 5.270 + movsb %cs:(%si),%es:(%di) 5.271 + lret 5.272 +cont: 5.273 +# 4- unlz(9000-sys-stp:end, 1000-stp:0) 5.274 +# if HARDCODED_SETUPSIZE 5.275 +setup_seg: 5.276 +# if KEEP_BOOTSECTOR 5.277 +# if UPDATE_SYSSIZE 5.278 + pushw $0x1000-(SETUP*32)-32-32 5.279 +# else 5.280 + pushw $0x1000-(SETUP*32)-32 5.281 +# endif 5.282 +# else 5.283 +# if UPDATE_SYSSIZE 5.284 + pushw $0x1000-(SETUP*32)-32 5.285 +# else 5.286 + pushw $0x1000-(SETUP*32) 5.287 +# endif 5.288 +# endif 5.289 + popw %es 5.290 +# else 5.291 + negw %ax 5.292 +# if UPDATE_SYSSIZE 5.293 + addw $0x1000-32, %ax 5.294 +# else 5.295 + addw $0x1000, %ax 5.296 +# endif 5.297 + movw %ax, %es 5.298 +# endif 5.299 +#endif // FLAT16 5.300 + popw %ds // <C> 5.301 +#if KEEP_BOOTSECTOR 5.302 + movw $0x200+end-_start, %si 5.303 +#else 5.304 + movw $end-_start, %si 5.305 +#endif 5.306 +#if UPDATE_SYSSIZE 5.307 + movw $SYSSIZE, %di 5.308 +#else 5.309 + xorw %di, %di 5.310 +#endif 5.311 + pushw %di 5.312 + pushw %es 5.313 + call unpack 5.314 + popw %ds 5.315 + popw %si 5.316 +# if KEEP_BOOTSECTOR 5.317 +setup_keep: 5.318 + xorw %di, %di 5.319 +# else 5.320 + movw %si, %di 5.321 +# endif 5.322 +# if SAVEREGS != 0 5.323 + popw %cx // <B> 5.324 +#if UPDATE_SYSSIZE 5.325 +// not need with memtest movb $(512-SYSSIZE)/2, %cl 5.326 +#endif 5.327 + popw %es // <A> 5.328 +# 5- move 1000-stp..1000 -> 9020 5.329 +# else 5.330 + popw %es // <A> 5.331 +jumpinto: 5.332 +# if HARDCODED_SETUPSIZE 5.333 +setup_word: 5.334 +# if KEEP_BOOTSECTOR 5.335 + movw $SETUP*256+256, %cx 5.336 +# else 5.337 + movw $SETUP*256, %cx 5.338 +# endif 5.339 +# else 5.340 +# if KEEP_BOOTSECTOR 5.341 + movw $0x100, %cx 5.342 + addb %ss:SETUPSIZE, %ch 5.343 +# else 5.344 + xorw %cx, %cx 5.345 + movb %ss:SETUPSIZE, %ch 5.346 +# endif 5.347 + movw %cx, %dx 5.348 +# endif 5.349 +# endif 5.350 + rep 5.351 + movsw 5.352 +#if SAVEREGS 5.353 + popw %ds 5.354 + popal 5.355 + iret 5.356 +#else 5.357 + lret 5.358 +#endif 5.359 + 5.360 +unpack: 5.361 +#define NO_LZMA_HEADER 5.362 +#if ELKS 5.363 +#define ONLY8086 1 5.364 +#endif 5.365 +#include "unlzma.S" 5.366 + 5.367 +end: