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[Qemu-devel] problem when building arm host
From: |
Cai Qiang |
Subject: |
[Qemu-devel] problem when building arm host |
Date: |
Thu, 3 Jul 2008 11:49:55 +0800 |
Hi,
I am trying to build qemu for arm host. I got below error:
......
make -C i386-linux-user all
make[1]: Entering directory
`/media/system/u/SW/src/qemu-arm-host/i386-linux-user'
arm-linux-gcc -g -Wl,-T,/u/SW/src/qemu-arm-host/arm.ld -o qemu-i386 main.o
syscall.o strace.o mmap.o signal.o path.o thunk.o elfload.o linuxload.o
uaccess.o vm86.o gdbstub.o libqemu.a ../libqemu_user.a -lm -lrt -lpthread
libqemu.a(cpu-exec.o): In function `cpu_x86_exec':
/u/SW/src/qemu-arm-host/cpu-exec.c:615: relocation truncated to fit: R_ARM_PC24
against symbol `code_gen_prologue' defined in COMMON section in
libqemu.a(exec.o)
/media/system/u/SW/usr/local/arm/gcc-4.0.2-glibc-2.3.5/arm-unknown-linux-gnu/bin/../lib/gcc/arm-unknown-linux-gnu/4.0.2/../../../../arm-unknown-linux-gnu/bin/ld:
warning: .preinit_array section has zero size
/media/system/u/SW/usr/local/arm/gcc-4.0.2-glibc-2.3.5/arm-unknown-linux-gnu/bin/../lib/gcc/arm-unknown-linux-gnu/4.0.2/../../../../arm-unknown-linux-gnu/bin/ld:
warning: .init_array section has zero size
/media/system/u/SW/usr/local/arm/gcc-4.0.2-glibc-2.3.5/arm-unknown-linux-gnu/bin/../lib/gcc/arm-unknown-linux-gnu/4.0.2/../../../../arm-unknown-linux-gnu/bin/ld:
warning: .fini_array section has zero size
collect2: ld returned 1 exit status
make[1]: *** [qemu-i386] Error 1
make[1]: Leaving directory
`/media/system/u/SW/src/qemu-arm-host/i386-linux-user'
make: *** [subdir-i386-linux-user] Error 2
in old post of andrzej zaborowski, he said
"Yes, arm-linux-user fails with the same error because gcc doesn't
manage to make the call to code_gen_prologue. One solution is to wrap
the #define tcg_qemu_tb_exec in tcg/tcg.h in an #ifndef, and override
it tcg/arm/tcg-target.h with the same kind of call as was used before
introduction of prologue/epilogue which was possibly more optimal."
but I don't understand above clearly. What I did is
in tcg/tcg.h
#ifdef __powerpc__
#define tcg_qemu_tb_exec(tb_ptr) \
((long REGPARM __attribute__ ((longcall)) (*)(void
*))code_gen_prologue)(tb_ptr)
#else
#ifndef tcg_qemu_tb_exec
#define tcg_qemu_tb_exec(tb_ptr) ((long REGPARM (*)(void
*))code_gen_prologue)(tb_ptr)
#endif
#endif
and add
#ifndef tcg_qemu_tb_exec
#define tcg_qemu_tb_exec(tb_ptr) ((long REGPARM (*)(void
*))code_gen_prologue)(tb_ptr)
#endif
in the end of tcg/arm/tcg-target.h
But seems no effect. Did I mis-understand?
In old post Paul also pointed out:
"Or tweak the linker script to place code_gen_prologue near to the code
segment."
Can anyone teach me how to do this?
Best Regards!