Re: help for mips

["Liu Yong" <yliu at newavetech dot com>]

Hi.
I think I have builded the executive file as you described , because I
haven't see any warning or error message.
And I think I forgot to tell you that I have build cross-gdb .
config --target=mips-elf ; make all install)
The 'GDB' I refered is means 'mips-elf-gdb'.
But when I use mips-elf-gdb to debug my code generate by cross-gcc ,
it(mips-elf-gdb)  tell me don't know how to run .
So how to debug my code  and how to know I have succeed in building
executive file(just becuase of no warning or error)?
Thank very much.
DANK SE. :)

Best Regards.
Yong Liu

The attachment result.txt file is the result that I run cross-gcc &
cross-gdb.
csh > make
mips-elf-gcc -v  -g  -nostartfiles -fverbose-asm -fpack-struct -Wall -Wl,-Tlinker2.ld -nodefaultlib -Wl,--cref -Wl,--print-map -save-temps -o hello hello.c > result.txt
Reading specs from /home/yliu/local/mipself/lib/gcc-lib/mips-elf/2.95.3/specs
mips-elf-gcc: unrecognized option `-nodefaultlib'
gcc version 2.95.3 20010315 (release)
 /home/yliu/local/mipself/lib/gcc-lib/mips-elf/2.95.3/cpp0 -lang-c -v -D__GNUC__=2 -D__GNUC_MINOR__=95 -Dmips -DMIPSEB -DR3000 -D_mips -D_MIPSEB -D_R3000 -D__mips__ -D__MIPSEB__ -D__R3000__ -D___mips__ -D_MIPSEB -D_R3000 -D__mips -D__MIPSEB -D__R3000 -D___mips -g -Wall -D__LANGUAGE_C -D_LANGUAGE_C -DLANGUAGE_C -D__SIZE_TYPE__=unsigned int -D__PTRDIFF_TYPE__=int hello.c hello.i
GNU CPP version 2.95.3 20010315 (release) [AL 1.1, MM 40] BSD Mips
#include "..." search starts here:
#include <...> search starts here:
 /home/yliu/local/mipself/lib/gcc-lib/mips-elf/2.95.3/include
 /home/yliu/local/mipself/lib/gcc-lib/mips-elf/2.95.3/../../../../mips-elf/sys-include
 /home/yliu/local/mipself/lib/gcc-lib/mips-elf/2.95.3/../../../../mips-elf/include
End of search list.
The following default directories have been omitted from the search path:
 /home/yliu/local/mipself/lib/gcc-lib/mips-elf/2.95.3/../../../../include/g++-3
End of omitted list.
 /home/yliu/local/mipself/lib/gcc-lib/mips-elf/2.95.3/cc1 hello.i -quiet -dumpbase hello.c -g -Wall -version -fverbose-asm -fpack-struct -o hello.s
GNU C version 2.95.3 20010315 (release) (mips-elf) compiled by GNU C version 2.95.3 20010315 (release).
hello.c:3: warning: return type of `main' is not `int'
 /home/yliu/local/mipself/mips-elf/bin/as -g -v -o hello.o hello.s
GNU assembler version 2.11.2 (mips-elf) using BFD version 2.11.2
 /home/yliu/local/mipself/lib/gcc-lib/mips-elf/2.95.3/collect2 -o hello -L/home/yliu/local/mipself/lib/gcc-lib/mips-elf/2.95.3 -L/home/yliu/local/mipself/mips-elf/lib -Tlinker2.ld --cref --print-map hello.o -lgcc -lgcc
Archive member included       because of file (symbol)

/home/yliu/local/mipself/lib/gcc-lib/mips-elf/2.95.3/libgcc.a(__main.o)
                              hello.o (__gccmain)
/home/yliu/local/mipself/lib/gcc-lib/mips-elf/2.95.3/libgcc.a(_ctors.o)
                              /home/yliu/local/mipself/lib/gcc-lib/mips-elf/2.95.3/libgcc.a(__main.o) (__CTOR_LIST__)

Memory Configuration

Name             Origin             Length             Attributes
*default*        0x0000000000000000 0xffffffffffffffff

Linker script and memory map

                0x0000000000000400                .=0x400

.text           0x0000000000000400      0x164
 *(.text)
 .text          0x0000000000000400       0x38 hello.o
                0x0000000000000400                main
 .text          0x0000000000000438      0x12c /home/yliu/local/mipself/lib/gcc-lib/mips-elf/2.95.3/libgcc.a(__main.o)
                0x0000000000000534                __gccmain
                0x0000000000000438                __do_global_dtors
                0x00000000000004a4                __do_global_ctors
                0x0000000000a00000                .=0xa00000

.data           0x0000000000a00000       0x14
 *(.data)
 .data          0x0000000000a00000        0x4 /home/yliu/local/mipself/lib/gcc-lib/mips-elf/2.95.3/libgcc.a(__main.o)
 .data          0x0000000000a00004       0x10 /home/yliu/local/mipself/lib/gcc-lib/mips-elf/2.95.3/libgcc.a(_ctors.o)
                0x0000000000a00004                __CTOR_LIST__
                0x0000000000a0000c                __DTOR_LIST__

.bss            0x0000000000a00014        0x4
 *(.bss)
 .bss           0x0000000000a00014        0x4 /home/yliu/local/mipself/lib/gcc-lib/mips-elf/2.95.3/libgcc.a(__main.o)
                0x0000000000a00018                end=ALIGN(0x8)
LOAD hello.o
LOAD /home/yliu/local/mipself/lib/gcc-lib/mips-elf/2.95.3/libgcc.a
LOAD /home/yliu/local/mipself/lib/gcc-lib/mips-elf/2.95.3/libgcc.a
OUTPUT(hello elf32-bigmips)

.reginfo        0x0000000000000000       0x18
 .reginfo       0x0000000000000000       0x18 hello.o

.mdebug         0x0000000000000000     0x2e9c
 .mdebug        0x0000000000000000     0x1110 hello.o
 .mdebug        0x0000000000001110     0x1be0 /home/yliu/local/mipself/lib/gcc-lib/mips-elf/2.95.3/libgcc.a(__main.o)
 .mdebug        0x0000000000002cf0     0x1998 /home/yliu/local/mipself/lib/gcc-lib/mips-elf/2.95.3/libgcc.a(_ctors.o)

.rel.dyn        0x0000000000004690        0x0

Cross Reference Table

Symbol                                            File
__CTOR_LIST__                                     /home/yliu/local/mipself/lib/gcc-lib/mips-elf/2.95.3/libgcc.a(_ctors.o)
                                                  /home/yliu/local/mipself/lib/gcc-lib/mips-elf/2.95.3/libgcc.a(__main.o)
__DTOR_LIST__                                     /home/yliu/local/mipself/lib/gcc-lib/mips-elf/2.95.3/libgcc.a(_ctors.o)
                                                  /home/yliu/local/mipself/lib/gcc-lib/mips-elf/2.95.3/libgcc.a(__main.o)
__do_global_ctors                                 /home/yliu/local/mipself/lib/gcc-lib/mips-elf/2.95.3/libgcc.a(__main.o)
__do_global_dtors                                 /home/yliu/local/mipself/lib/gcc-lib/mips-elf/2.95.3/libgcc.a(__main.o)
__gccmain                                         /home/yliu/local/mipself/lib/gcc-lib/mips-elf/2.95.3/libgcc.a(__main.o)
                                                  hello.o
main                                              hello.o

csh> mips-elf-gdb hello
(gdb) run
Starting program /home/yliu/program/68ktry/hello
Don't know how to run . Try "help target" .
(gdb)
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