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authorDave Chapman <dave@dchapman.com>2008-10-04 08:46:03 +0000
committerDave Chapman <dave@dchapman.com>2008-10-04 08:46:03 +0000
commitc6be818212de133da4a51cebcdfee84c6dbae984 (patch)
treee6e321e0c0437d5a937db7c126be2289f30cb874 /utils/AMS/hacking
parentd16fe2d36a0881a1bf4f65b945087a10962ed33a (diff)
downloadrockbox-c6be818212de133da4a51cebcdfee84c6dbae984.tar.gz
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rockbox-c6be818212de133da4a51cebcdfee84c6dbae984.zip
Move mkamsboot into the rbutil/mkamsboot/ directory - no other changes, so this should still work the same as before.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@18706 a1c6a512-1295-4272-9138-f99709370657
Diffstat (limited to 'utils/AMS/hacking')
-rw-r--r--utils/AMS/hacking/Makefile56
-rw-r--r--utils/AMS/hacking/README9
-rw-r--r--utils/AMS/hacking/extract_fw.c129
-rw-r--r--utils/AMS/hacking/mkamsboot.c341
-rw-r--r--utils/AMS/hacking/nrv2e_d8.S194
-rw-r--r--utils/AMS/hacking/test.S55
6 files changed, 2 insertions, 782 deletions
diff --git a/utils/AMS/hacking/Makefile b/utils/AMS/hacking/Makefile
index 8f48d611c8..1a297bc3ab 100644
--- a/utils/AMS/hacking/Makefile
+++ b/utils/AMS/hacking/Makefile
@@ -1,59 +1,7 @@
-# Change INFILE to point to your original firmware file
-INFILE=$(HOME)/FW/AMS/CLIP/m300a-1.1.17A.bin
-
-# OUTFILE is the file you copy to your device's root and rename to
-# (e.g.) m300a.bin
-OUTFILE=patched.bin
-
-# The uclpack command
-UCLPACK=../../../tools/uclpack
-
-all: amsinfo $(OUTFILE)
+all: amsinfo
amsinfo: amsinfo.c
gcc -o amsinfo -W -Wall amsinfo.c
-mkamsboot: mkamsboot.c
- gcc -o mkamsboot -W -Wall mkamsboot.c
-
-extract_fw: extract_fw.c
- gcc -o extract_fw -W -Wall extract_fw.c
-
-# Rules for our test ARM application - assemble, link, then extract
-# the binary code
-
-test.o: test.S
- arm-elf-as -o test.o test.S
-
-test.elf: test.o
- arm-elf-ld -e 0 -Ttext=0 -o test.elf test.o
-
-test.bin: test.elf
- arm-elf-objcopy -O binary test.elf test.bin
-
-# Rules for the ucl unpack function - this is inserted in the padding at
-# the end of the original firmware block
-nrv2e_d8.o: nrv2e_d8.S
- arm-elf-gcc -DPURE_THUMB -c -o nrv2e_d8.o nrv2e_d8.S
-
-# NOTE: this function has no absolute references, so the link address (-e)
-# is irrelevant. We just link at address 0.
-nrv2e_d8.elf: nrv2e_d8.o
- arm-elf-ld -e 0 -Ttext=0 -o nrv2e_d8.elf nrv2e_d8.o
-
-nrv2e_d8.bin: nrv2e_d8.elf
- arm-elf-objcopy -O binary nrv2e_d8.elf nrv2e_d8.bin
-
-firmware_block.ucl: firmware_block.bin
- $(UCLPACK) --best --2e firmware_block.bin firmware_block.ucl
-
-firmware_block.bin: $(INFILE) extract_fw
- ./extract_fw $(INFILE) firmware_block.bin
-
-$(OUTFILE): mkamsboot firmware_block.ucl test.bin nrv2e_d8.bin $(INFILE)
- ./mkamsboot $(INFILE) firmware_block.ucl test.bin nrv2e_d8.bin $(OUTFILE)
-
clean:
- rm -fr amsinfo mkamsboot test.o test.elf test.bin extract_fw \
- nrv2e_d8.o nrv2e_d8.elf nrv2e_d8.bin firmware_block.bin \
- firmware_block.ucl $(OUTFILE) *~
+ rm -fr amsinfo
diff --git a/utils/AMS/hacking/README b/utils/AMS/hacking/README
index ce16f954cd..59bb27ebae 100644
--- a/utils/AMS/hacking/README
+++ b/utils/AMS/hacking/README
@@ -5,12 +5,3 @@ This directory contains the following tools related to the Sansa V2
A tool that dumps information from an AMS firmware file.
-2) mkamsboot
-
-A tool to inject some code (contained in test.S) into a firmware file.
-
-Edit the INFILE variable in the Makefile to point to the original
-firmware file you want to patch, edit "test.S" appropriately, and then
-type "make".
-
-
diff --git a/utils/AMS/hacking/extract_fw.c b/utils/AMS/hacking/extract_fw.c
deleted file mode 100644
index e91d1f8de1..0000000000
--- a/utils/AMS/hacking/extract_fw.c
+++ /dev/null
@@ -1,129 +0,0 @@
-/*
-
-extract_fw.c - extract the main firmware image from a Sansa V2 (AMS) firmware
- file
-
-Copyright (C) Dave Chapman 2008
-
-This program is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2 of the License, or
-(at your option) any later version.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with this program; if not, write to the Free Software
-Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110, USA
-
-*/
-
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <stdint.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-#include <unistd.h>
-#include <string.h>
-
-
-/* Win32 compatibility */
-#ifndef O_BINARY
-#define O_BINARY 0
-#endif
-
-
-static off_t filesize(int fd) {
- struct stat buf;
-
- if (fstat(fd,&buf) < 0) {
- perror("[ERR] Checking filesize of input file");
- return -1;
- } else {
- return(buf.st_size);
- }
-}
-
-static uint32_t get_uint32le(unsigned char* p)
-{
- return p[0] | (p[1] << 8) | (p[2] << 16) | (p[3] << 24);
-}
-
-void usage(void)
-{
- printf("Usage: extract_fw <firmware file> <output file>\n");
-
- exit(1);
-}
-
-int main(int argc, char* argv[])
-{
- char *infile, *outfile;
- int fdin, fdout;
- off_t len;
- uint32_t n;
- unsigned char* buf;
- uint32_t firmware_size;
-
- if(argc != 3) {
- usage();
- }
-
- infile = argv[1];
- outfile = argv[2];
-
- /* Open the firmware file */
- fdin = open(infile,O_RDONLY|O_BINARY);
-
- if (fdin < 0) {
- fprintf(stderr,"[ERR] Could not open %s for reading\n",infile);
- return 1;
- }
-
- if ((len = filesize(fdin)) < 0)
- return 1;
-
- /* We will need no more memory than the total size plus the bootloader size
- padded to a boundary */
- if ((buf = malloc(len)) == NULL) {
- fprintf(stderr,"[ERR] Could not allocate buffer for input file (%d bytes)\n",(int)len);
- return 1;
- }
-
- n = read(fdin, buf, len);
-
- if (n != (uint32_t)len) {
- fprintf(stderr,"[ERR] Could not read firmware file\n");
- return 1;
- }
-
- close(fdin);
-
- /* Get the firmware size */
- firmware_size = get_uint32le(&buf[0x0c]);
-
- fdout = open(outfile, O_CREAT|O_TRUNC|O_WRONLY|O_BINARY,0666);
-
- if (fdout < 0) {
- fprintf(stderr,"[ERR] Could not open %s for writing\n",outfile);
- return 1;
- }
-
- n = write(fdout, buf + 0x400, firmware_size);
-
- if (n != (uint32_t)firmware_size) {
- fprintf(stderr,"[ERR] Could not write firmware block\n");
- return 1;
- }
-
- /* Clean up */
- close(fdout);
- free(buf);
-
- return 0;
-}
diff --git a/utils/AMS/hacking/mkamsboot.c b/utils/AMS/hacking/mkamsboot.c
deleted file mode 100644
index 52ead58b69..0000000000
--- a/utils/AMS/hacking/mkamsboot.c
+++ /dev/null
@@ -1,341 +0,0 @@
-/*
-
-mkamsboot.c - a tool for merging bootloader code into an Sansa V2
- (AMS) firmware file
-
-Copyright (C) Dave Chapman 2008
-
-This program is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2 of the License, or
-(at your option) any later version.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with this program; if not, write to the Free Software
-Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110, USA
-
-*/
-
-
-/*
-
-Insert a Rockbox bootloader into an AMS original firmware file.
-
-We replace the main firmware block (bytes 0x400..0x400+firmware_size)
-as follows:
-
-
- --------------------- 0x0
-| |
-| Rockbox bootloader |
-| |
-|---------------------|
-| EMPTY SPACE |
-|---------------------|
-| ucl unpack function |
-|---------------------|
-| |
-| compressed OF image |
-| |
-| |
- ---------------------
-
-This entire block fits into the space previously occupied by the main
-firmware block, and gives about 40KB of space to store the Rockbox
-bootloader. This could be increased if we also UCL compress the
-Rockbox bootloader.
-
-mkamsboot then corrects the checksums and writes a new legal firmware
-file which can be installed on the device.
-
-Our bootloader first checks for the "dual-boot" keypress, and then either:
-
-a) Copies the ucl unpack function and compressed OF image to an unused
- part of RAM and then branches to the ucl_unpack function, which
- will then branch to 0x0 after decompressing the OF to that location.
-
-b) Continues running with our test code
-
-*/
-
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <stdint.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-#include <unistd.h>
-#include <string.h>
-
-
-/* Win32 compatibility */
-#ifndef O_BINARY
-#define O_BINARY 0
-#endif
-
-
-#define PAD_TO_BOUNDARY(x) (((x) + 0x1ff) & ~0x1ff)
-
-
-/* This magic should appear at the start of any UCL file */
-static const unsigned char uclmagic[] = {
- 0x00, 0xe9, 0x55, 0x43, 0x4c, 0xff, 0x01, 0x1a
-};
-
-
-static off_t filesize(int fd) {
- struct stat buf;
-
- if (fstat(fd,&buf) < 0) {
- perror("[ERR] Checking filesize of input file");
- return -1;
- } else {
- return(buf.st_size);
- }
-}
-
-static uint32_t get_uint32le(unsigned char* p)
-{
- return p[0] | (p[1] << 8) | (p[2] << 16) | (p[3] << 24);
-}
-
-static uint32_t get_uint32be(unsigned char* p)
-{
- return (p[0] << 24) | (p[1] << 16) | (p[2] << 8) | p[3];
-
-}
-
-static void put_uint32le(unsigned char* p, uint32_t x)
-{
- p[0] = x & 0xff;
- p[1] = (x >> 8) & 0xff;
- p[2] = (x >> 16) & 0xff;
- p[3] = (x >> 24) & 0xff;
-}
-
-static int calc_checksum(unsigned char* buf, uint32_t n)
-{
- uint32_t sum = 0;
- uint32_t i;
-
- for (i=0;i<n;i+=4)
- sum += get_uint32le(buf + i);
-
- return sum;
-}
-
-void usage(void)
-{
- printf("Usage: mkamsboot <firmware file> <ucl image> <boot file> <ucl unpack file> <output file>\n");
-
- exit(1);
-}
-
-int main(int argc, char* argv[])
-{
- char *infile, *uclfile, *bootfile, *uclunpackfile, *outfile;
- int fdin, fducl, fdboot, fduclunpack, fdout;
- off_t len;
- unsigned char uclheader[26];
- uint32_t n;
- unsigned char* buf;
- uint32_t firmware_size;
- uint32_t firmware_paddedsize;
- uint32_t bootloader_size;
- uint32_t ucl_size;
- uint32_t ucl_paddedsize;
- uint32_t uclunpack_size;
- uint32_t sum,filesum;
- uint32_t i;
-
- if(argc != 6) {
- usage();
- }
-
- infile = argv[1];
- uclfile = argv[2];
- bootfile = argv[3];
- uclunpackfile = argv[4];
- outfile = argv[5];
-
- /* Open the bootloader file */
- fdboot = open(bootfile, O_RDONLY|O_BINARY);
- if (fdboot < 0)
- {
- fprintf(stderr,"[ERR] Could not open %s for reading\n",bootfile);
- return 1;
- }
-
- bootloader_size = filesize(fdboot);
-
-
- /* Open the UCL-compressed image of the firmware block */
- fduclunpack = open(uclunpackfile, O_RDONLY|O_BINARY);
- if (fduclunpack < 0)
- {
- fprintf(stderr,"[ERR] Could not open %s for reading\n",uclunpackfile);
- return 1;
- }
-
- uclunpack_size = filesize(fduclunpack);
-
-
- /* Open the UCL-compressed image of the firmware block */
- fducl = open(uclfile, O_RDONLY|O_BINARY);
- if (fducl < 0)
- {
- fprintf(stderr,"[ERR] Could not open %s for reading\n",uclfile);
- return 1;
- }
-
- /* Some UCL file sanity checks */
- n = read(fducl, uclheader, sizeof(uclheader));
-
- if (n != sizeof(uclheader)) {
- fprintf(stderr,"[ERR] Could not read header from UCL file\n");
- return 1;
- }
-
- if (memcmp(uclmagic, uclheader, sizeof(uclmagic))!=0) {
- fprintf(stderr,"[ERR] Invalid UCL file\n");
- return 1;
- }
-
- if (uclheader[12] != 0x2e) {
- fprintf(stderr,"[ERR] Unsupported UCL compression format (0x%02x) - only 0x2e supported.\n",uclheader[12]);
- return 1;
- }
- ucl_size = get_uint32be(&uclheader[22]) + 8;
- ucl_paddedsize = (ucl_size + 3) & ~0x3;
-
- if (ucl_size + 26 > (unsigned)filesize(fducl)) {
- fprintf(stderr, "[ERR] Size mismatch in UCL file\n");
- return 1;
- }
-
- /* Open the firmware file */
- fdin = open(infile,O_RDONLY|O_BINARY);
-
- if (fdin < 0) {
- fprintf(stderr,"[ERR] Could not open %s for reading\n",infile);
- return 1;
- }
-
- if ((len = filesize(fdin)) < 0)
- return 1;
-
- /* Allocate memory for the OF image - we don't change the size */
- if ((buf = malloc(len)) == NULL) {
- fprintf(stderr,"[ERR] Could not allocate buffer for input file (%d bytes)\n",(int)len);
- return 1;
- }
-
- n = read(fdin, buf, len);
-
- if (n != (uint32_t)len) {
- fprintf(stderr,"[ERR] Could not read firmware file\n");
- return 1;
- }
-
- close(fdin);
-
- /* Get the firmware size */
- firmware_size = get_uint32le(&buf[0x0c]);
-
- /* Round size up to next multiple of 0x200 */
-
- firmware_paddedsize = PAD_TO_BOUNDARY(firmware_size);
-
- fprintf(stderr,"Original firmware size - %d bytes\n",firmware_size);
- fprintf(stderr,"Padded firmware size - %d bytes\n",firmware_paddedsize);
- fprintf(stderr,"Bootloader size - %d bytes\n",bootloader_size);
- fprintf(stderr,"UCL image size - %d bytes (%d bytes padded)\n",ucl_size,ucl_paddedsize);
- fprintf(stderr,"UCL unpack function size - %d bytes\n",uclunpack_size);
- fprintf(stderr,"Original total size of firmware - %d bytes\n",(int)len);
-
- /* Check we have room for our bootloader - in the future, we could UCL
- pack this image as well if we need to. */
- if (bootloader_size > (firmware_size - ucl_paddedsize - uclunpack_size)) {
- fprintf(stderr,"[ERR] Bootloader too large (%d bytes, %d available)\n",
- bootloader_size, firmware_size - ucl_paddedsize - uclunpack_size);
- return 1;
- }
-
- /* Zero the original firmware area - not needed, but helps debugging */
- memset(buf + 0x400, 0, firmware_size);
-
- /* Locate our bootloader code at the start of the firmware block */
- n = read(fdboot, buf + 0x400, bootloader_size);
-
- if (n != bootloader_size) {
- fprintf(stderr,"[ERR] Could not load bootloader file\n");
- return 1;
- }
- close(fdboot);
-
- /* Locate the compressed image of the original firmware block at the end
- of the firmware block */
- n = read(fducl, buf + 0x400 + firmware_size - ucl_paddedsize, ucl_size);
-
- if (n != ucl_size) {
- fprintf(stderr,"[ERR] Could not load ucl file\n");
- return 1;
- }
- close(fducl);
-
-
- /* Locate our UCL unpack function before copy of the compressed firmware */
- n = read(fduclunpack, buf + 0x400 + firmware_size - ucl_paddedsize - uclunpack_size, uclunpack_size);
-
- if (n != uclunpack_size) {
- fprintf(stderr,"[ERR] Could not load uclunpack file\n");
- return 1;
- }
- close(fduclunpack);
-
- put_uint32le(&buf[0x420], 0x40000 - ucl_paddedsize - uclunpack_size + 1); /* UCL unpack entry point */
- put_uint32le(&buf[0x424], 0x40000 - ucl_paddedsize); /* Location of OF */
- put_uint32le(&buf[0x428], ucl_size); /* Size of UCL image */
- put_uint32le(&buf[0x42c], firmware_size - uclunpack_size - ucl_paddedsize); /* Start of data to copy */
- put_uint32le(&buf[0x430], uclunpack_size + ucl_paddedsize); /* Size of data to copy */
-
- /* Update checksum */
- sum = calc_checksum(buf + 0x400,firmware_size);
-
- put_uint32le(&buf[0x04], sum);
- put_uint32le(&buf[0x204], sum);
-
- /* Update the whole-file checksum */
- filesum = 0;
- for (i=0;i < (unsigned)len - 4; i+=4)
- filesum += get_uint32le(&buf[i]);
-
- put_uint32le(buf + len - 4, filesum);
-
-
- /* Write the new firmware */
- fdout = open(outfile, O_CREAT|O_TRUNC|O_WRONLY|O_BINARY,0666);
-
- if (fdout < 0) {
- fprintf(stderr,"[ERR] Could not open %s for writing\n",outfile);
- return 1;
- }
-
- n = write(fdout, buf, len);
-
- if (n != (unsigned)len) {
- fprintf(stderr,"[ERR] Could not write firmware file\n");
- return 1;
- }
-
- close(fdout);
-
- return 0;
-
-}
diff --git a/utils/AMS/hacking/nrv2e_d8.S b/utils/AMS/hacking/nrv2e_d8.S
deleted file mode 100644
index 89cb76dead..0000000000
--- a/utils/AMS/hacking/nrv2e_d8.S
+++ /dev/null
@@ -1,194 +0,0 @@
-/* arm_nrv2e_d8.S -- ARM decompressor for NRV2E
-
- This file is part of the UPX executable compressor.
-
- Copyright (C) 1996-2008 Markus Franz Xaver Johannes Oberhumer
- Copyright (C) 1996-2008 Laszlo Molnar
- Copyright (C) 2000-2008 John F. Reiser
- All Rights Reserved.
-
- UPX and the UCL library are free software; you can redistribute them
- and/or modify them under the terms of the GNU General Public License as
- published by the Free Software Foundation; either version 2 of
- the License, or (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; see the file COPYING.
- If not, write to the Free Software Foundation, Inc.,
- 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
-
- Markus F.X.J. Oberhumer Laszlo Molnar
- <markus@oberhumer.com> <ml1050@users.sourceforge.net>
-
- John F. Reiser
- <jreiser@users.sourceforge.net>
-*/
-#define SAFE 0 /* 1 for src+dst bounds checking: cost 40 bytes */
-
-#define src r0
-#define len r1 /* overlaps 'cnt' */
-#define dst r2
-#define tmp r3
-#define bits r4
-#define off r5
-#define wrnk r6 /* 0x500 M2_MAX_OFFSET before "wrinkle" */
-#define srclim r7
-#if 1==SAFE /*{*/
-#define dstlim r12
-#endif /*}*/
-
-#define cnt r1 /* overlaps 'len' while reading an offset */
-
-#if 1==SAFE /*{*/
-#define CHECK_SRC cmp src,srclim; bhs bad_src_n2e
-#define CHECK_DST cmp dst,dstlim; bhs bad_dst_n2e
-#else /*}{*/
-#define CHECK_SRC /*empty*/
-#define CHECK_DST /*empty*/
-#endif /*}*/
-
-#if 0 /*{ DEBUG only: check newly-decompressed against original dst */
-#define CHECK_BYTE \
- push {wrnk}; \
- ldrb wrnk,[dst]; \
- cmp wrnk,tmp; beq 0f; bkpt; \
-0: pop {wrnk}
-#else /*}{*/
-#define CHECK_BYTE /*empty*/
-#endif /*}*/
-
-/* "mov lr,pc; bxx ..." implements conditional subroutine call */
-#define GETBIT add bits,bits; mov lr,pc; beq get1_n2e
-
-#define getnextb(reg) GETBIT; adc reg,reg
-#define jnextb0 GETBIT; bcc
-#define jnextb1 GETBIT; bcs
-
-#ifndef PURE_THUMB
-ucl_nrv2e_decompress_8: .globl ucl_nrv2e_decompress_8 @ ARM mode
- .type ucl_nrv2e_decompress_8, %function
-/* error = (*)(char const *src, int len_src, char *dst, int *plen_dst)
- Actual decompressed length is stored through plen_dst.
- For SAFE mode: at call, *plen_dst must be allowed length of output buffer.
-*/
- adr r12,1+.thumb_nrv2e_d8; bx r12 @ enter THUMB mode
-#endif
- .code 16 @ THUMB mode
- .thumb_func
-
-.thumb_nrv2e_d8:
-#if 0
- push {r2,r3, r4,r5,r6,r7, lr}
-#define sp_DST0 0 /* stack offset of original dst */
-#endif
- add srclim,len,src @ srclim= eof_src;
-#if 1==SAFE /*{*/
- ldr tmp,[r3] @ len_dst
- add tmp,dst
- mov dstlim,tmp
-#endif /*}*/
- mov bits,#1; neg off,bits @ off= -1 initial condition
- lsl bits,#31 @ 1<<31: refill next time
- mov wrnk,#5
- lsl wrnk,#8 @ 0x500 @ nrv2e M2_MAX_OFFSET
- b top_n2e
-
-#if 1==SAFE /*{*/
-bad_dst_n2e: # return value will be 2
- add src,srclim,#1
-bad_src_n2e: # return value will be 1
- add src,#1
-#endif /*}*/
-eof_n2e:
-#if 0
- pop {r3,r4} @ r3= orig_dst; r4= plen_dst
- sub src,srclim @ 0 if actual src length equals expected length
- sub dst,r3 @ actual dst length
- str dst,[r4]
- pop {r4,r5,r6,r7 /*,pc*/}
- pop {r1}; bx r1 @ "pop {,pc}" fails return to ARM mode on ARMv4T
-#else
- mov r0, #0
- bx r0 /* Branch to 0x0, switch to ARM mode */
-#endif
-
-get1_n2e: @ In: Carry set [from adding 0x80000000 (1<<31) to itself]
- ldrb bits,[src] @ zero-extend next byte
- adc bits,bits @ double and insert CarryIn as low bit
- CHECK_SRC
- add src,#1
- lsl bits,#24 @ move to top byte, and set CarryOut from old bit 8
- mov pc,lr @ return, stay in current (THUMB) mode
-
-lit_n2e:
- CHECK_SRC; ldrb tmp,[src]; add src,#1
- CHECK_BYTE
- CHECK_DST; strb tmp,[dst]; add dst,#1
-top_n2e:
- jnextb1 lit_n2e
- mov cnt,#1; b getoff_n2e
-
-off_n2e:
- sub cnt,#1
- getnextb(cnt)
-getoff_n2e:
- getnextb(cnt)
- jnextb0 off_n2e
-
- sub tmp,cnt,#3 @ set Carry
- mov len,#0 @ Carry unaffected
- blo offprev_n2e @ cnt was 2; tests Carry only
- lsl tmp,#8
- CHECK_SRC; ldrb off,[src]; add src,#1 @ low 7+1 bits
- orr off,tmp
- mvn off,off; beq eof_n2e @ off= ~off
- asr off,#1; bcs lenlast_n2e
- b lenmore_n2e
-
-offprev_n2e:
- jnextb1 lenlast_n2e
-lenmore_n2e:
- mov len,#1
- jnextb1 lenlast_n2e
-len_n2e:
- getnextb(len)
- jnextb0 len_n2e
- add len,#6-2
- b gotlen_n2e
-
-lenlast_n2e:
- getnextb(len) @ 0,1,2,3
- add len,#2
-gotlen_n2e: @ 'cmn': add the inputs, set condition codes, discard the sum
- cmn wrnk,off; bcs near_n2e @ within M2_MAX_OFFSET
- add len,#1 @ too far away, so minimum match length is 3
-near_n2e:
-#if 1==SAFE /*{*/
- ldr tmp,[sp,#sp_DST0]
- sub tmp,dst
- sub tmp,off; bhi bad_dst_n2e @ reaching back too far
-
- add tmp,dst,cnt
- cmp tmp,dstlim; bhi bad_dst_n2e @ too much output
-#endif /*}*/
- ldrb tmp,[dst] @ force cacheline allocate
-copy_n2e:
- ldrb tmp,[dst,off]
- CHECK_BYTE
- strb tmp,[dst]; add dst,#1
- sub len,#1; bne copy_n2e
- b top_n2e
-
-#ifndef PURE_THUMB
- .size ucl_nrv2e_decompress_8, .-ucl_nrv2e_decompress_8
-#endif
-
-/*
-vi:ts=8:et:nowrap
- */
-
diff --git a/utils/AMS/hacking/test.S b/utils/AMS/hacking/test.S
deleted file mode 100644
index a4757b44ce..0000000000
--- a/utils/AMS/hacking/test.S
+++ /dev/null
@@ -1,55 +0,0 @@
-/* int ucl_nrv2e_decompress_8(const unsigned char *src, unsigned char *dst,
- unsigned long *dst_len) */
-
-.text
-.global ucl_nrv2e_decompress_8
-
-
-/* Vectors */
- ldr pc, =start
-.word 0
-.word 0
-.word 0
-.word 0
-.word 0
-.word 0
-.word 0
-
-/* These values are filled in by mkamsboot - don't move them from offset 0x20 */
-ucl_unpack: .word 0 /* Entry point (plus 1 - for thumb) of ucl_unpack after copy*/
-ucl_start: .word 0 /* Start of the ucl-compressed OF image after copy */
-ucl_size: .word 0 /* Length in bytes of the compressed OF image */
-copy_start: .word 0 /* Start of the copy of the ucl_unpack function */
-copy_size: .word 0 /* uclunpack_size + ucl_paddedsize */
-
-start:
- /* A delay loop - just to prove we're running */
- mov r1, #0x500000 /* Approximately 5 seconds */
-loop: subs r1, r1, #1
- bne loop
-
- /* First copy the compressed firmware to unused RAM */
-
- ldr r0, copy_start /* Source */
- ldr r1, copy_size /* Source length */
-
- mov r2, #0x40000 /* Destination end */
- sub r2, r2, r1
-
-memcpy:
- ldrb r3, [r0], #1
- strb r3, [r2], #1
- cmp r2, #0x40000 /* Stop when we reached dest_end */
- bne memcpy
-
- /* Call the ucl decompress function, which will branch to 0x0 */
- /* on completion */
-
- ldr r0, ucl_start /* Address of compressed image */
- ldr r1, ucl_size /* Compressed size */
- mov r2, #0 /* Destination */
-
- ldr r3, ucl_unpack
- bx r3
-
- /* never reached */