diff dyncall/dyncall_call_mips_o32_gas.s @ 0:3e629dc19168

initial from svn dyncall-1745
author Daniel Adler
date Thu, 19 Mar 2015 22:24:28 +0100
parents
children 1ce60358fbad
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dyncall/dyncall_call_mips_o32_gas.s	Thu Mar 19 22:24:28 2015 +0100
@@ -0,0 +1,109 @@
+/*
+
+ Package: dyncall
+ Library: dyncall
+ File: dyncall/dyncall_call_mips_o32_gas.s
+ Description: mips "o32" abi call kernel implementation in GNU Assembler
+ License:
+
+   Copyright (c) 2007-2011 Daniel Adler <dadler@uni-goettingen.de>, 
+                           Tassilo Philipp <tphilipp@potion-studios.com>
+
+   Permission to use, copy, modify, and distribute this software for any
+   purpose with or without fee is hereby granted, provided that the above
+   copyright notice and this permission notice appear in all copies.
+
+   THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+   WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+   MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+   ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+   WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+   ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+   OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+*/
+	/* $4   target function */
+ 	/* $5   register data */
+	/* $6   stack size (min 16-byte aligned to 8-bytes already) */
+	/* $7   stack data */
+
+
+
+	.section .mdebug.abi32
+	.previous
+	.abicalls
+	.text
+	.align	2
+	.globl	dcCall_mips_o32
+	.ent	dcCall_mips_o32
+	.type	dcCall_mips_o32, @function
+dcCall_mips_o32:
+	.frame	$fp,40,$31		/* vars=8, regs=2/0, args=16, gp=8 */
+	.mask	0xc0000000,-4
+	.fmask	0x00000000,0
+	.set	noreorder
+	.set	nomacro
+	
+	addiu	$sp,$sp,-8
+	sw	$31,4($sp)	/* save link register */
+	sw	$fp,0($sp)	/* save frame pointer */
+	nop
+	move	$fp,$sp		/* frame pointer = sp */
+	sub	$sp, $sp, $6	/* increment stack */
+
+	/* copy stack data */
+
+	/* $12  source pointer (parameter stack data) */
+	/* $14  destination (stack pointer) */
+	/* $6   byte count */
+
+	move	$12, $7
+	move	$14, $sp
+
+.next:
+	beq	$6, $0, .skip
+	nop
+	lw	$2, 0($12)
+	nop
+	sw	$2, 0($14)
+	addiu	$12,$12, 4
+	addiu	$14,$14, 4
+	addiu	$6, $6, -4
+	j	.next
+	nop
+.skip:
+
+	/* load two double-precision floating-point argument registers ($f12, $f14) */
+
+	l.d     $f12, 0($5)
+	l.d     $f14, 8($5)
+	/* prepare call */
+
+
+	move	$12, $7		/* $12  stack data */
+	move	$25, $4		/* $25  target function */
+
+	/* load first four integer arguments ($4-$7) */
+
+	lw	$4, 0($12)
+	lw	$5, 4($12)
+	lw	$6, 8($12)
+	lw	$7,12($12)
+
+	/* call target function */
+
+	jalr	$25
+	nop
+	move	$sp,$fp 	/* restore stack pointer */
+	nop
+	lw	$31,4($sp)	/* restore return address */
+	lw	$fp,0($sp)	/* restore frame pointer */
+	addiu	$sp,$sp,8	/* end stack frame */
+	j	$31		/* return */
+	nop
+
+	.set	macro
+	.set	reorder
+	.end	dcCall_mips_o32 
+	.ident 	"handwritten"
+