[Qemu-devel] Help getting an qemu-alpha environment to work

[qemu]

Hi There

I am new to qemu development but wanted to give a hand with the alpha
port. Unfortinuatly it is not that easy to get the initial development
environment up and running. So I ask you for help

I downloaded qemu 0.12.50 using git. That compiled cleanly on ubuntu
9.10, including qemu-alpha

After that i turned to crosstool-ng-1.6.2 to get a cross compiler
environment. I compiled the alphaev56-unknown-linux-gnu environment
without a hickup.

Lastly I went to qemu/tests/alpha and ran make:

$ make
alphaev56-unknown-linux-gnu-gcc -O   -c -o hello-alpha.o hello-alpha.c
alphaev56-unknown-linux-gnu-as   -o crt.o crt.s
alphaev56-unknown-linux-gnu-gcc -o hello-alpha crt.o hello-alpha.o -nostdlib
alphaev56-unknown-linux-gnu-gcc -O   -c -o test-cond.o test-cond.c
alphaev56-unknown-linux-gnu-gcc -o test-cond crt.o test-cond.o -nostdlib
alphaev56-unknown-linux-gnu-gcc -c -O -DTEST_CMOV -o test-cmov.o test-cond.c
alphaev56-unknown-linux-gnu-gcc -o test-cmov crt.o test-cmov.o -nostdlib

$ make check
for f in test-cond test-cmov; do ../../alpha-linux-user/qemu-alpha $f
|| exit 1; done
$ echo $?
0

Being convinced I had reached the goal I ran:

$ ../../alpha-linux-user/qemu-alpha hello-alpha
$ echo $?
0

I was a bit surprised not being greeted with "hello world", so I ran:

$ ../../alpha-linux-user/qemu-alpha -strace  hello-alpha
17682 write(1,0,536871368) = -1 errno=14 (Bad address)
17682 exit(0)

Obviously something was wrong, so I ran

$ ../../alpha-linux-user/qemu-alpha  -d in_asm,exec hello-alpha
$ cat /tmp/qemu.log
host mmap_min_addr=0x10000
guest_base  0x0
start    end      size     prot
0000000000110000-0000000000256000 0000000000146000 ---
0000000000508000-0000000000522000 000000000001a000 ---
00000000006de000-00000000006e0000 0000000000002000 ---
00000000008a4000-00000000008ae000 000000000000a000 ---
0000000000b2a000-0000000000b52000 0000000000028000 ---
0000000000c00000-0000000000c1e000 000000000001e000 ---
0000000020000000-0000000020002000 0000000000002000 r-x
0000000020012000-0000000020014000 0000000000002000 rw-
0000000040000000-0000000040800000 0000000000800000 rw-
0000000040800000-0000000040802000 0000000000002000 ---
0000000060000000-000000006008c000 000000000008c000 ---
000000006018a000-00000000621c4000 000000000203a000 ---
0000000063108000-000000006312a000 0000000000022000 ---
00000000b4cb8000-00000000b7710000 0000000002a58000 ---
00000000bfc10000-00000000bfc36000 0000000000026000 ---
start_brk   0x0000000120012010
end_code    0x0000000120000250
start_code  0x0000000120000000
start_data  0x0000000120012000
end_data    0x0000000120012010
start_stack 0x00000000407ffbe0
brk         0x0000000120012010
entry       0x0000000120000158

IN: _start
0x0000000120000158:  .long 0x63108418

IN: _start
0x000000012000015c:  .long 0x63108418
0x0000000120000160:  .long 0x63108418
0x0000000120000164:  .long 0x63108418
0x0000000120000168:  .long 0x63108418

IN: main
0x0000000120000188:  .long 0x63108418
0x000000012000018c:  .long 0x63108418
0x0000000120000190:  .long 0x63108418
0x0000000120000194:  .long 0x63108418
0x0000000120000198:  .long 0x63108418
0x000000012000019c:  .long 0x63108418
0x00000001200001a0:  .long 0x63108418
0x00000001200001a4:  .long 0x63108418
0x00000001200001a8:  .long 0x63108418
0x00000001200001ac:  .long 0x63108418

IN:
0x000000012000017c:  .long 0x63108418
0x0000000120000180:  .long 0x63108418

IN:
0x0000000120000184:  .long 0x63108418

IN: main
0x00000001200001b0:  .long 0x63108418
0x00000001200001b4:  .long 0x63108418
0x00000001200001b8:  .long 0x63108418
0x00000001200001bc:  .long 0x63108418
0x00000001200001c0:  .long 0x63108418
0x00000001200001c4:  .long 0x63108418

IN: _start
0x000000012000016c:  .long 0x63108418
0x0000000120000170:  .long 0x63108418
0x0000000120000174:  .long 0x63108418

I would appriciate if one of you qemu wizards could help me get a
develop env setup.

Br. Thomas