.globl cpuidfunc
.def .type cpuidfunc, @function; .enddef
ELF and PE/COFF are different platforms; they have different assembler
syntaxes. Just because they both use the GNU assembler and the intel
x86 architecture doesn’t mean you can feed ELF style assembly to a
PE/COFF gas and expect it to work. Example:
linux
$ echo “void a_function_definition () { }” | gcc -S -x c - -o -
.file “”
.text
.globl a_function_definition
.type a_function_definition, @function
a_function_definition:
pushl %ebp
movl %esp, %ebp
popl %ebp
ret
.size a_function_definition, .-a_function_definition
.ident “GCC: (GNU) 4.0.4 20060507 (prerelease) (Debian
4.0.3-3)”
.section .note.GNU-stack,”“,@progbits
cygwin
$ echo “void a_function_definition () { }” | gcc -S -x c - -o -
.file “”
.text
.globl _a_function_definition
.def _a_function_definition; .scl 2; .type 32;
.endef
_a_function_definition:
pushl %ebp
movl %esp, %ebp
popl %ebp
ret
See the difference? “.type foo, @funtion” is not valid PE/COFF syntax.
This is why most people use gcc’s inline asm() instead of writing direct
.s files, because it lets gcc do all the platform specific busywork
while you just write the relevant assembly parts.
Brian
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