diff dyncall/dyncall_call_mips_o32.S @ 302:d55f9d508074

- mips softfloat support for o32 callconv (calls and callbacks, little and big endian) - cleanup of some mips files, removed unnecessary file, renamings.. - doc/manual cleanups, changelog entry
author Tassilo Philipp
date Mon, 21 May 2018 02:48:12 +0200
parents dyncall/dyncall_call_mips_o32_gas.s@f5453308ff36
children 72b450cc3be8
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line diff
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dyncall/dyncall_call_mips_o32.S	Mon May 21 02:48:12 2018 +0200
@@ -0,0 +1,109 @@
+/*
+
+ Package: dyncall
+ Library: dyncall
+ File: dyncall/dyncall_call_mips_o32.S
+ Description: mips "o32" abi call kernel implementation in GNU Assembler
+ License:
+
+   Copyright (c) 2007-2018 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
+	
+	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, $6, -4
+	j       .next
+	nop
+.skip:
+
+#if defined(DC__ABI_HARDFLOAT)
+	/* load two double-precision floating-point argument registers ($f12, $f14) - not for softfloat */
+
+	l.d     $f12, 0($5)
+	l.d     $f14, 8($5)
+#endif
+
+	/* 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    reorder
+	.end    dcCall_mips_o32 
+	.ident  "handwritten"
+