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* restore use of .type in asm, but use modern @function (vs %function)Rich Felker2011-06-141-0/+1
| | | | | | | | this seems to be necessary to make the linker accept the functions in a shared library (perhaps to generate PLT entries?) strictly speaking libc-internal asm should not need it. i might clean that up later.
* remove all .size and .type directives for functions from the asmRich Felker2011-06-131-2/+0
| | | | | these are useless and have caused problems for users trying to build with non-gnu tools like tcc's assembler.
* remove comment cruft that got left behind in x86_64 syscall.sRich Felker2011-03-191-1/+0
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* overhaul syscall interfaceRich Felker2011-03-191-0/+14
this commit shuffles around the location of syscall definitions so that we can make a syscall() library function with both SYS_* and __NR_* style syscall names available to user applications, provides the syscall() library function, and optimizes the code that performs the actual inline syscalls in the library itself. previously on i386 when built as PIC (shared library), syscalls were incurring bus lock (lock prefix) overhead at entry and exit, due to the way the ebx register was being loaded (xchg instruction with a memory operand). now the xchg takes place between two registers. further cleanup to arch/$(ARCH)/syscall.h is planned.