minix/lib/libc/arch/i386/int64/make64.S

/*	make64() - make a 64 bit number from two 32 bit halves */
/*							Author: Kees J. Bot */
/*								7 Dec 1995 */
#include <minix/compiler.h>
#include <machine/asm.h>

ENTRY(make64)
/* u64_t make64(unsigned long lo, unsigned long hi); */
	movl	4(%esp), %eax
	movl	8(%esp), %edx
	movl	%edx, (%eax)
	movl	12(%esp), %edx
	movl	%edx, 4(%eax)
	ret BYTES_TO_POP_ON_STRUCT_RETURN

/* */
/* $PchId: make64.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			`/* make64() - make a 64 bit number from two 32 bit halves */`
			`/* 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>`
Macros for symbols used in both ASM and C -The macros take care of prepending the leading underscore when necessary. 2010-08-17 18:44:07 +02:00			`#include <machine/asm.h>`
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
Macros for symbols used in both ASM and C -The macros take care of prepending the leading underscore when necessary. 2010-08-17 18:44:07 +02:00			`ENTRY(make64)`
Convert library asm files to GAS syntax 2010-03-03 15:27:30 +01:00			`/* u64_t make64(unsigned long lo, unsigned long hi); */`
			`movl 4(%esp), %eax`
			`movl 8(%esp), %edx`
			`movl %edx, (%eax)`
			`movl 12(%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: make64.ack.s,v 1.2 1996/04/11 18:59:57 philip Exp $ */`