minix/lib/libc/arch/i386/int64/add64.S

/*	add64() - 64 bit addition			Author: Kees J. Bot */
/*								7 Dec 1995 */
#include <minix/compiler.h>

.text
.globl	_add64

_add64:
/* u64_t add64(u64_t i, u64_t j); */
	movl	4(%esp), %eax
	movl	8(%esp), %edx
	addl	16(%esp), %edx
	movl	%edx, (%eax)
	movl	12(%esp), %edx
	adcl	20(%esp), %edx
	movl	%edx, 4(%eax)
	ret BYTES_TO_POP_ON_STRUCT_RETURN

/* */
/* $PchId: add64.ack.s,v 1.2 1996/04/11 18:59:57 philip Exp $ */
Convert library asm files to GAS syntax 2010-03-03 15:27:30 +01:00			`/* add64() - 64 bit addition Author: Kees J. Bot */`
			`/* 7 Dec 1995 */`
cdecl calling convention expects the callee to pop the hidden pointer on struct return. For example, GCC and LLVM comply with this (tested on IA32). ACK doesn't seem to follow this convention and expects the caller to clean up the stack. Compiling hand-written ACK-compliant assembly code (returning a struct) with GCC or LLVM used to break things (4-bytes misaligned stack). The patch fixes this problem. 2010-03-24 18:25:17 +01:00			`#include <minix/compiler.h>`

Convert library asm files to GAS syntax 2010-03-03 15:27:30 +01:00			`.text`
			`.globl _add64`

			`_add64:`
			`/* u64_t add64(u64_t i, u64_t j); */`
			`movl 4(%esp), %eax`
			`movl 8(%esp), %edx`
			`addl 16(%esp), %edx`
			`movl %edx, (%eax)`
			`movl 12(%esp), %edx`
			`adcl 20(%esp), %edx`
			`movl %edx, 4(%eax)`
cdecl calling convention expects the callee to pop the hidden pointer on struct return. For example, GCC and LLVM comply with this (tested on IA32). ACK doesn't seem to follow this convention and expects the caller to clean up the stack. Compiling hand-written ACK-compliant assembly code (returning a struct) with GCC or LLVM used to break things (4-bytes misaligned stack). The patch fixes this problem. 2010-03-24 18:25:17 +01:00			`ret BYTES_TO_POP_ON_STRUCT_RETURN`
Convert library asm files to GAS syntax 2010-03-03 15:27:30 +01:00
			`/* */`
			`/* $PchId: add64.ack.s,v 1.2 1996/04/11 18:59:57 philip Exp $ */`