mkimage 制作uImage文件

/* * taken from gdb/remote.c * * I am only interested in the write to memory stuff - everything else * has been ripped out * * all the copyright notices etc have been left in */ /* enough so that it will compile */ #include <stdio.h> #include <stdlib.h> #include <string.h> #include <errno.h> /*nicked from gcc..*/ #ifndef alloca #ifdef __GNUC__ #define alloca __builtin_alloca #else /* not GNU C. */ #if (!defined (__STDC__) && defined (sparc)) || defined (__sparc__) || defined (__sparc) || defined (__sgi) #include <alloca.h> #else /* not sparc */ #if defined (MSDOS) && !defined (__TURBOC__) #include <malloc.h> #else /* not MSDOS, or __TURBOC__ */ #if defined(_AIX) #include <malloc.h> #pragma alloca #else /* not MSDOS, __TURBOC__, or _AIX */ #ifdef __hpux #endif /* __hpux */ #endif /* not _AIX */ #endif /* not MSDOS, or __TURBOC__ */ #endif /* not sparc. */ #endif /* not GNU C. */ #ifdef __cplusplus extern "C" { #endif void* alloca(size_t); #ifdef __cplusplus } #endif #endif /* alloca not defined. */ #include "serial.h" #include "error.h" #include "remote.h" #define REGISTER_BYTES 0 #define fprintf_unfiltered fprintf #define fprintf_filtered fprintf #define fputs_unfiltered fputs #define fputs_filtered fputs #define fputc_unfiltered fputc #define fputc_filtered fputc #define printf_unfiltered printf #define printf_filtered printf #define puts_unfiltered puts #define puts_filtered puts #define putchar_unfiltered putchar #define putchar_filtered putchar #define fputstr_unfiltered(a,b,c) fputs((a), (c)) #define gdb_stdlog stderr #define SERIAL_READCHAR(fd,timo) serialreadchar((fd), (timo)) #define SERIAL_WRITE(fd, addr, len) serialwrite((fd), (addr), (len)) #define error Error #define perror_with_name Perror #define gdb_flush fflush #define max(a,b) (((a)>(b))?(a):(b)) #define min(a,b) (((a)<(b))?(a):(b)) #define target_mourn_inferior() {} #define ULONGEST unsigned long #define CORE_ADDR unsigned long static int putpkt (char *); static int putpkt_binary(char *, int); static void getpkt (char *, int); static int remote_debug = 0, remote_register_buf_size = 0, watchdog = 0; int remote_desc = -1, remote_timeout = 10; static void fputstrn_unfiltered(char *s, int n, int x, FILE *fp) { while (n-- > 0) fputc(*s++, fp); } void remote_reset(void) { SERIAL_WRITE(remote_desc, "+", 1); } void remote_continue(void) { putpkt("c"); } /* Remote target communications for serial-line targets in custom GDB protocol Copyright 1988, 91, 92, 93, 94, 95, 96, 97, 98, 1999 Free Software Foundation, Inc. This file is part of GDB. 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ /* *INDENT-OFF* */ /* Remote communication protocol. A debug packet whose contents are <data> is encapsulated for transmission in the form: $ <data> # CSUM1 CSUM2 <data> must be ASCII alphanumeric and cannot include characters '$' or '#'. If <data> starts with two characters followed by ':', then the existing stubs interpret this as a sequence number. CSUM1 and CSUM2 are ascii hex representation of an 8-bit checksum of <data>, the most significant nibble is sent first. the hex digits 0-9,a-f are used. Receiver responds with: + - if CSUM is correct and ready for next packet - - if CSUM is incorrect <data> is as follows: Most values are encoded in ascii hex digits. Signal numbers are according to the numbering in target.h. Request Packet set thread Hct... Set thread for subsequent operations. c = 'c' for thread used in step and continue; t... can be -1 for all threads. c = 'g' for thread used in other operations. If zero, pick a thread, any thread. reply OK for success ENN for an error. read registers g reply XX....X Each byte of register data is described by two hex digits. Registers are in the internal order for GDB, and the bytes in a register are in the same order the machine uses. or ENN for an error. write regs GXX..XX Each byte of register data is described by two hex digits. reply OK for success ENN for an error write reg Pn...=r... Write register n... with value r..., which contains two hex digits for each byte in the register (target byte order). reply OK for success ENN for an error (not supported by all stubs). read mem mAA..AA,LLLL AA..AA is address, LLLL is length. reply XX..XX XX..XX is mem contents Can be fewer bytes than requested if able to read only part of the data. or ENN NN is errno write mem MAA..AA,LLLL:XX..XX AA..AA is address, LLLL is number of bytes, XX..XX is data reply OK for success ENN for an error (this includes the case where only part of the data was written). write mem XAA..AA,LLLL:XX..XX (binary) AA..AA is address, LLLL is number of bytes, XX..XX is binary data reply OK for success ENN for an error continue cAA..AA AA..AA is address to resume If AA..AA is omitted, resume at same address. step sAA..AA AA..AA is address to resume If AA..AA is omitted, resume at same address. continue with Csig;AA..AA Continue with signal sig (hex signal signal number). If ;AA..AA is omitted, resume at same address. step with Ssig;AA..AA Like 'C' but step not continue. signal last signal ? Reply the current reason for stopping. This is the same reply as is generated for step or cont : SAA where AA is the signal number. detach D Reply OK. There is no immediate reply to step or cont. The reply comes when the machine stops. It is SAA AA is the signal number. or... TAAn...:r...;n...:r...;n...:r...; AA = signal number n... = register number (hex) r... = register contents n... = `thread' r... = thread process ID. This is a hex integer. n... = other string not starting with valid hex digit. gdb should ignore this n,r pair and go on to the next. This way we can extend the protocol. or... WAA The process exited, and AA is the exit status. This is only applicable for certains sorts of targets. or... XAA The process terminated with signal AA. or (obsolete) NAA;tttttttt;dddddddd;bbbbbbbb AA = signal number tttttttt = address of symbol "_start" dddddddd = base of data section bbbbbbbb = base of bss section. Note: only used by Cisco Systems targets. The difference between this reply and the "qOffsets" query is that the 'N' packet may arrive spontaneously whereas the 'qOffsets' is a query initiated by the host debugger. or... OXX..XX XX..XX is hex encoding of ASCII data. This can happen at any time while the program is running and the debugger should continue to wait for 'W', 'T', etc. thread alive TXX Find out if the thread XX is alive. reply OK thread is still alive ENN thread is dead remote restart RXX Restart the remote server extended ops ! Use the extended remote protocol. Sticky -- only needs to be set once. kill request k toggle debug d toggle debug flag (see 386 & 68k stubs) reset r reset -- see