diff options
Diffstat (limited to 'linux-user/include/host/s390/host-signal.h')
| -rw-r--r-- | linux-user/include/host/s390/host-signal.h | 138 |
1 files changed, 0 insertions, 138 deletions
diff --git a/linux-user/include/host/s390/host-signal.h b/linux-user/include/host/s390/host-signal.h deleted file mode 100644 index e6d3ec26dc..0000000000 --- a/linux-user/include/host/s390/host-signal.h +++ /dev/null @@ -1,138 +0,0 @@ -/* - * 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 S390_HOST_SIGNAL_H -#define S390_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.psw.addr; -} - -static inline void host_signal_set_pc(host_sigcontext *uc, uintptr_t pc) -{ - uc->uc_mcontext.psw.addr = pc; -} - -static inline void *host_signal_mask(host_sigcontext *uc) -{ - return &uc->uc_sigmask; -} - -static inline bool host_signal_write(siginfo_t *info, host_sigcontext *uc) -{ - uint16_t *pinsn = (uint16_t *)host_signal_pc(uc); - - /* - * ??? On linux, the non-rt signal handler has 4 (!) arguments instead - * of the normal 2 arguments. The 4th argument contains the "Translation- - * Exception Identification for DAT Exceptions" from the hardware (aka - * "int_parm_long"), which does in fact contain the is_write value. - * The rt signal handler, as far as I can tell, does not give this value - * at all. Not that we could get to it from here even if it were. - * So fall back to parsing instructions. Treat read-modify-write ones as - * writes, which is not fully correct, but for tracking self-modifying code - * this is better than treating them as reads. Checking si_addr page flags - * might be a viable improvement, albeit a racy one. - */ - /* ??? This is not even close to complete. */ - switch (pinsn[0] >> 8) { - case 0x50: /* ST */ - case 0x42: /* STC */ - case 0x40: /* STH */ - case 0x44: /* EX */ - case 0xba: /* CS */ - case 0xbb: /* CDS */ - return true; - case 0xc4: /* RIL format insns */ - switch (pinsn[0] & 0xf) { - case 0xf: /* STRL */ - case 0xb: /* STGRL */ - case 0x7: /* STHRL */ - return true; - } - break; - case 0xc6: /* RIL-b format insns */ - switch (pinsn[0] & 0xf) { - case 0x0: /* EXRL */ - return true; - } - break; - case 0xc8: /* SSF format insns */ - switch (pinsn[0] & 0xf) { - case 0x2: /* CSST */ - return true; - } - break; - case 0xe3: /* RXY format insns */ - switch (pinsn[2] & 0xff) { - case 0x50: /* STY */ - case 0x24: /* STG */ - case 0x72: /* STCY */ - case 0x70: /* STHY */ - case 0x8e: /* STPQ */ - case 0x3f: /* STRVH */ - case 0x3e: /* STRV */ - case 0x2f: /* STRVG */ - return true; - } - break; - case 0xe6: - switch (pinsn[2] & 0xff) { - case 0x09: /* VSTEBRH */ - case 0x0a: /* VSTEBRG */ - case 0x0b: /* VSTEBRF */ - case 0x0e: /* VSTBR */ - case 0x0f: /* VSTER */ - case 0x3f: /* VSTRLR */ - return true; - } - break; - case 0xe7: - switch (pinsn[2] & 0xff) { - case 0x08: /* VSTEB */ - case 0x09: /* VSTEH */ - case 0x0a: /* VSTEG */ - case 0x0b: /* VSTEF */ - case 0x0e: /* VST */ - case 0x1a: /* VSCEG */ - case 0x1b: /* VSCEF */ - case 0x3e: /* VSTM */ - case 0x3f: /* VSTL */ - return true; - } - break; - case 0xeb: /* RSY format insns */ - switch (pinsn[2] & 0xff) { - case 0x14: /* CSY */ - case 0x30: /* CSG */ - case 0x31: /* CDSY */ - case 0x3e: /* CDSG */ - case 0xe4: /* LANG */ - case 0xe6: /* LAOG */ - case 0xe7: /* LAXG */ - case 0xe8: /* LAAG */ - case 0xea: /* LAALG */ - case 0xf4: /* LAN */ - case 0xf6: /* LAO */ - case 0xf7: /* LAX */ - case 0xfa: /* LAAL */ - case 0xf8: /* LAA */ - return true; - } - break; - } - return false; -} - -#endif |