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[Qemu-devel] Where is this change coming from?
From: |
Ben Taylor |
Subject: |
[Qemu-devel] Where is this change coming from? |
Date: |
Wed, 26 Apr 2006 14:56:31 -0400 |
Compile environment - Solaris 9/Ultra 10 workstation
this is code generated by a 0.7.2-solaris port of dyngen for i386-softmmu/op.h
for the function
case INDEX_op_imulb_AL_T0: {
extern void op_imulb_AL_T0();
extern char __dot_umul __asm__(".umul");
memcpy(gen_code_ptr, (void *)((char *)&op_imulb_AL_T0+4), 76);
*(uint32_t *)(gen_code_ptr + 16) = ((*(uint32_t *)(gen_code_ptr + 16)) &
~0x3fffffff) | (((((long)(&__dot_umul) + 0) - (long)(gen_code_ptr + 16))>>2)
& 0x3fffffff);
gen_code_ptr += 76;
}
break;
this is the function generated by the 0.8.0-cvs code
case INDEX_op_imulb_AL_T0: {
extern void op_imulb_AL_T0();
extern char __dot_umul __asm__(".umul");
memcpy(gen_code_ptr, (void *)((char *)&op_imulb_AL_T0+4), 76);
*(uint32_t *)(gen_code_ptr + 16) = ((*(uint32_t *)(gen_code_ptr + 16)) &
~0x3fffffff) | (((((lo + 0) - (long)(gen_code_ptr + 16))>>2)
& 0x3fffffff);
gen_code_ptr += 76;
}
break;
This is the compile sequence for the 0.8.0-cvs with the error message:
gcc -Wall -O2 -g -fno-strict-aliasing -m32 -ffixed-g2 -ffixed-g3 -I. -I..
-I/export/src/qemu/qemu-solaris-9/target-i386 -I/export/src/qemu/qemu-solaris-9
-D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
-I/export/src/qemu/qemu-solaris-9/fpu -DHAS_AUDIO
-I/export/src/qemu/qemu-solaris-9/slirp -c -o translate-op.o
/export/src/qemu/qemu-solaris-9/translate-op.c
In file included from /export/src/qemu/qemu-solaris-9/translate-op.c:36:
./op.h: In function `dyngen_code':
./op.h:896: error: `lo' undeclared (first use in this function)
./op.h:896: error: (Each undeclared identifier is reported only once
./op.h:896: error: for each function it appears in.)
./op.h:896: error: syntax error before ';' token
./op.h:904: error: `op_cmpneqsd' undeclared (first use in this function)
./op.h:905: error: `param1' undeclared (first use in this function)
./op.h:906: error: `param2' undeclared (first use in this function)
./op.h:894: warning: unused variable `__dot_umul'
looking carefully between the two generated functions, I see that they are
slightly
different. The first one (0.7.2) compiles cleanly and runs. The second one
(0.8.0-cvs)
does not compiile cleanly, and it appears that the function call has been
left off the line of code.
*(uint32_t *)(gen_code_ptr + 16) = ((*(uint32_t *)(gen_code_ptr + 16)) &
~0x3fffffff) | (((((long)(&__dot_umul) + 0) - (long)(gen_code_ptr + 16))>>2)
& 0x3fffffff);
*(uint32_t *)(gen_code_ptr + 16) = ((*(uint32_t *)(gen_code_ptr + 16)) &
~0x3fffffff) | (((((lo + 0) - (long)(gen_code_ptr + 16))>>2)
The specific difference in the working copy has
(((((long)(&__dot_umul) + 0)
while the compile failling copy has
(((((lo + 0)
Am I missing something? There are many cascading errors due to "lo not defined"
in this environment, and I'm not really sure if it's a bug, or some problem in
my
environment.
Ideas?
Thanks,
Ben
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