Mercurial > pub > dyncall > dyncall
view dyncallback/dyncall_thunk_ppc32_sysv.c @ 383:268378d66610
- thunk test: better signal handling, using sigaction(2) with SA_ONSTACK
whenever available to enable handling stack errors (as handler uses same
stack); thanks for bringing this to our attention, Bernhard!
author | Tassilo Philipp |
---|---|
date | Wed, 20 Jan 2021 17:36:34 +0100 |
parents | f5577f6bf97a |
children |
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/* Package: dyncall Library: dyncallback File: dyncallback/dyncall_thunk_ppc32_sysv.c Description: Thunks on PowerPC 32-bit System V ABI License: Copyright (c) 2015-2018 Daniel Adler <dadler@uni-goettingen.de> 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. */ #include "dyncall_thunk.h" static unsigned short hi16(x) { return ( (unsigned short) (((unsigned int)x)>>16UL) ); } static unsigned short lo16(x) { return ( (unsigned short) ((unsigned int)x) ); } void dcbInitThunk(DCThunk* p, void (*entry)()) { /* 0: 3d 60 00 00 lis r11,0 4: 61 6b 00 01 ori r11,r11,1 8: 81 82 00 14 lwz r12,20(r2) c: 7d 89 03 a6 mtctr r12 10: 4e 80 04 20 bctr */ p->code_load_hi = 0x3d60U; /* lis r11, HI16(p) */ p->addr_self_hi = hi16(p); p->code_load_lo = 0x616bU; /* ori r11, r11, LO16(p) */ p->addr_self_lo = lo16(p); p->code_jump[0] = 0x818b0014U; /* lwz r12, 20(r11) */ p->code_jump[1] = 0x7d8903a6U; /* mtclr r12 */ p->code_jump[2] = 0x4e800420U; /* bctr */ p->addr_entry = entry; }