a16308efdb
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.
21 lines
425 B
ArmAsm
21 lines
425 B
ArmAsm
/* sub64() - 64 bit subtraction Author: Kees J. Bot */
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/* 7 Dec 1995 */
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#include <minix/compiler.h>
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.text
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.globl _sub64
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_sub64:
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/* u64_t sub64(u64_t i, u64_t j); */
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movl 4(%esp), %eax
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movl 8(%esp), %edx
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subl 16(%esp), %edx
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movl %edx, (%eax)
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movl 12(%esp), %edx
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sbbl 20(%esp), %edx
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movl %edx, 4(%eax)
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ret BYTES_TO_POP_ON_STRUCT_RETURN
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/* */
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/* $PchId: sub64.ack.s,v 1.2 1996/04/11 18:59:57 philip Exp $ */
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