Mercurial > pub > dyncall > dyncall
view dyncallback/dyncall_callback_mips_n64_gas.s @ 246:06a354b2e120
changes for dynload for macOS and OpenBSD:
- reverted last commit, b/c of brainfat (wrongly assuming all libs iterated over are opened by dynload)
- make use of RTLD_NOLOAD, though, when re-dlopen-ing to get path, for performance (where available)
author | Tassilo Philipp |
---|---|
date | Thu, 04 May 2017 23:38:30 +0200 |
parents | 1b0c02e827c4 |
children |
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/* Package: dyncall Library: dyncallback File: dyncallback/dyncall_callback_mips_n64_gas.s Description: Callback Thunk - Implementation for mips64 n64 License: Copyright (c) 2016 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. */ /* input: $t8 -> thunk $t8+56 -> cb handler $t8+64 -> userdata */ .section .mdebug.abi64 .previous .abicalls .text .align 2 .globl dcCallbackThunkEntry .ent dcCallbackThunkEntry dcCallbackThunkEntry: .set noreorder /* Prolog. */ /* Frame size of 160b comes from following: */ /* DCargs(fregs:64 + iregs:64 + regcounts:8 + stackptr:8) + retval:8 + ra:8 */ daddiu $sp, $sp, -160 /* open frame */ sd $ra, 152($sp) /* save link register */ .frame $fp,160,$31 /* specify our frame: fp,size,lr; creates virt $fp */ /* code below doesn't use $fp though, as n/a with -O1 */ /* Init return value */ sd $zero, 144($sp) /* Store float and int args where our DCargs member arrays are, in local area. */ sd $4, 0($sp) sd $5, 8($sp) sd $6, 16($sp) sd $7, 24($sp) sd $8, 32($sp) sd $9, 40($sp) sd $10, 48($sp) sd $11, 56($sp) s.d $f12, 64($sp) s.d $f13, 72($sp) s.d $f14, 80($sp) s.d $f15, 88($sp) s.d $f16, 96($sp) s.d $f17, 104($sp) s.d $f18, 112($sp) s.d $f19, 120($sp) /* Init DCarg's reg_counts and stackptr. */ sd $zero, 128($sp) /* reg_count */ daddiu $4, $sp, 160 sd $4, 136($sp) /* stackptr */ /* Prepare callback handler call. */ move $4, $24 /* Param 0 = DCCallback*, $24 ($t8) holds pointer to thunk */ move $5, $sp /* Param 1 = DCArgs*, pointer to where pointer to args is stored */ daddiu $6, $sp, 144 /* Param 2 = results pointer to 8b of local data on stack */ ld $7, 64($24) /* Param 3 = userdata pointer */ ld $25, 56($24) /* store handler entry in $25 ($t9), required for PIC */ jalr $25 /* jump */ nop /* branch delay nop */ /* Copy result in corresponding registers $2-$3 ($v0-$v1) and $f0 */ ld $2, 144($sp) /* note: ignoring second possible retval in $3, here */ l.d $f0, 144($sp) /* Epilog. Tear down frame and return. */ ld $ra, 152($sp) /* restore return address */ daddiu $sp, $sp, 160 /* close frame */ j $ra /* return */ nop /* branch delay nop */ .set reorder .end dcCallbackThunkEntry .ident "handwritten"