50 lines
1.8 KiB
C
50 lines
1.8 KiB
C
|
/*
|
||
|
|
* arm sysarch() system call emulation
|
||
|
|
*
|
||
|
|
* Copyright (c) 2013 Stacey D. Son
|
||
|
|
*
|
||
|
|
* This program is free software; you can redistribute it and/or modify
|
||
|
|
* it under the terms of the GNU General Public License as published by
|
||
|
|
* the Free Software Foundation; either version 2 of the License, or
|
||
|
|
* (at your option) any later version.
|
||
|
|
*
|
||
|
|
* This program is distributed in the hope that it will be useful,
|
||
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
|
|
* GNU General Public License for more details.
|
||
|
|
*
|
||
|
|
* You should have received a copy of the GNU General Public License
|
||
|
|
* along with this program; if not, see <http://www.gnu.org/licenses/>.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef _TARGET_ARCH_SIGTRAMP_H_
|
||
|
|
#define _TARGET_ARCH_SIGTRAMP_H_
|
||
|
|
|
||
|
|
/* Compare to arm/arm/locore.S ENTRY_NP(sigcode) */
|
||
|
|
static inline abi_long setup_sigtramp(abi_ulong offset, unsigned sigf_uc,
|
||
|
|
unsigned sys_sigreturn)
|
||
|
|
{
|
||
|
|
int i;
|
||
|
|
uint32_t sys_exit = TARGET_FREEBSD_NR_exit;
|
||
|
|
uint32_t sigtramp_code[] = {
|
||
|
|
/* 1 */ 0xE1A0000D, /* mov r0, sp */
|
||
|
|
/* 2 */ 0xE2800000 + sigf_uc, /* add r0, r0, #SIGF_UC */
|
||
|
|
/* 3 */ 0xE59F700C, /* ldr r7, [pc, #12] */
|
||
|
|
/* 4 */ 0xEF000000 + sys_sigreturn, /* swi (SYS_sigreturn) */
|
||
|
|
/* 5 */ 0xE59F7008, /* ldr r7, [pc, #8] */
|
||
|
|
/* 6 */ 0xEF000000 + sys_exit, /* swi (SYS_exit)*/
|
||
|
|
/* 7 */ 0xEAFFFFFA, /* b . -16 */
|
||
|
|
/* 8 */ sys_sigreturn,
|
||
|
|
/* 9 */ sys_exit
|
||
|
|
};
|
||
|
|
|
||
|
|
G_STATIC_ASSERT(sizeof(sigtramp_code) == TARGET_SZSIGCODE);
|
||
|
|
|
||
|
|
for (i = 0; i < 9; i++) {
|
||
|
|
tswap32s(&sigtramp_code[i]);
|
||
|
|
}
|
||
|
|
|
||
|
|
return memcpy_to_target(offset, sigtramp_code, TARGET_SZSIGCODE);
|
||
|
|
}
|
||
|
|
#endif /* _TARGET_ARCH_SIGTRAMP_H_ */
|