I try to rebuild hwinfo at RHEL for 64-bit. But there are some errors:
gcc -c -Wall -O2 -pipe -g -fPIC -I../../src/hd cpu.c
{standard input}: Assembler messages:
{standard input}:368: Error: suffix or operands invalid for `push'
{standard input}:373: Error: suffix or operands invalid for `pop'
and I found the reason is:
Instructions that modify the stack (push, pop, call, ret, enter, and
leave) are implicitly 64-bit.
I fix the source as the following:
--- hwinfo-8.99.old/src/hd/cpu.c 2007-03-28 10:13:42.000000000 +0800
+++ hwinfo-8.99/src/hd/cpu.c 2007-03-28 10:16:57.000000000 +0800
@@ -494,19 +494,30 @@
ADD2LOG("----- /proc/cpuinfo end -----\n");
}
-
#if defined(__i386__) || defined(__x86_64__)
inline unsigned units_per_cpu()
{
unsigned u;
asm(
+#if defined(__i386__)
"push %%ebx\n\t"
+#else
+ "push %%rbx\n\t"
+#endif
"mov $1,%%eax\n\t"
"cpuid\n\t"
+#if defined(__i386__)
"shr $8,%%ebx\n\t"
+#else
+ "shr $8,%%rbx\n\t"
+#endif
"movzx %%bh,%%eax\n\t"
+#if defined(__i386__)
"pop %%ebx"
+#else
+ "pop %%rbx"
+#endif
: "=a" (u)
:: "%ecx", "%edx"
);
Anyone have met this status?
Thanks
Zhao
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