forked from mirror/qemu
You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
76 lines
1.8 KiB
C
76 lines
1.8 KiB
C
/*
|
|
* host-signal.h: signal info dependent on the host architecture
|
|
*
|
|
* Copyright (c) 2003-2005 Fabrice Bellard
|
|
* Copyright (c) 2021 Linaro Limited
|
|
*
|
|
* This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
|
|
* See the COPYING file in the top-level directory.
|
|
*/
|
|
|
|
#ifndef MIPS_HOST_SIGNAL_H
|
|
#define MIPS_HOST_SIGNAL_H
|
|
|
|
/* The third argument to a SA_SIGINFO handler is ucontext_t. */
|
|
typedef ucontext_t host_sigcontext;
|
|
|
|
static inline uintptr_t host_signal_pc(host_sigcontext *uc)
|
|
{
|
|
return uc->uc_mcontext.pc;
|
|
}
|
|
|
|
static inline void host_signal_set_pc(host_sigcontext *uc, uintptr_t pc)
|
|
{
|
|
uc->uc_mcontext.pc = pc;
|
|
}
|
|
|
|
static inline void *host_signal_mask(host_sigcontext *uc)
|
|
{
|
|
return &uc->uc_sigmask;
|
|
}
|
|
|
|
#if defined(__misp16) || defined(__mips_micromips)
|
|
#error "Unsupported encoding"
|
|
#endif
|
|
|
|
static inline bool host_signal_write(siginfo_t *info, host_sigcontext *uc)
|
|
{
|
|
uint32_t insn = *(uint32_t *)host_signal_pc(uc);
|
|
|
|
/* Detect all store instructions at program counter. */
|
|
switch ((insn >> 26) & 077) {
|
|
case 050: /* SB */
|
|
case 051: /* SH */
|
|
case 052: /* SWL */
|
|
case 053: /* SW */
|
|
case 054: /* SDL */
|
|
case 055: /* SDR */
|
|
case 056: /* SWR */
|
|
case 070: /* SC */
|
|
case 071: /* SWC1 */
|
|
case 074: /* SCD */
|
|
case 075: /* SDC1 */
|
|
case 077: /* SD */
|
|
#if !defined(__mips_isa_rev) || __mips_isa_rev < 6
|
|
case 072: /* SWC2 */
|
|
case 076: /* SDC2 */
|
|
#endif
|
|
return true;
|
|
case 023: /* COP1X */
|
|
/*
|
|
* Required in all versions of MIPS64 since
|
|
* MIPS64r1 and subsequent versions of MIPS32r2.
|
|
*/
|
|
switch (insn & 077) {
|
|
case 010: /* SWXC1 */
|
|
case 011: /* SDXC1 */
|
|
case 015: /* SUXC1 */
|
|
return true;
|
|
}
|
|
break;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
#endif
|