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-rw-r--r--accel/tcg/user-exec.c88
1 files changed, 1 insertions, 87 deletions
diff --git a/accel/tcg/user-exec.c b/accel/tcg/user-exec.c
index 5cdbfab35b..f18f3b2a5c 100644
--- a/accel/tcg/user-exec.c
+++ b/accel/tcg/user-exec.c
@@ -253,93 +253,7 @@ void *probe_access(CPUArchState *env, target_ulong addr, int size,
return size ? g2h(env_cpu(env), addr) : NULL;
}
-#if defined(__s390__)
-
-int cpu_signal_handler(int host_signum, void *pinfo,
- void *puc)
-{
- siginfo_t *info = pinfo;
- ucontext_t *uc = puc;
- unsigned long pc;
- uint16_t *pinsn;
- int is_write = 0;
-
- pc = uc->uc_mcontext.psw.addr;
-
- /*
- * ??? 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. */
- pinsn = (uint16_t *)pc;
- switch (pinsn[0] >> 8) {
- case 0x50: /* ST */
- case 0x42: /* STC */
- case 0x40: /* STH */
- case 0xba: /* CS */
- case 0xbb: /* CDS */
- is_write = 1;
- break;
- case 0xc4: /* RIL format insns */
- switch (pinsn[0] & 0xf) {
- case 0xf: /* STRL */
- case 0xb: /* STGRL */
- case 0x7: /* STHRL */
- is_write = 1;
- }
- break;
- case 0xc8: /* SSF format insns */
- switch (pinsn[0] & 0xf) {
- case 0x2: /* CSST */
- is_write = 1;
- }
- 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 */
- is_write = 1;
- }
- 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 */
- is_write = 1;
- }
- break;
- }
-
- return handle_cpu_signal(pc, info, is_write, &uc->uc_sigmask);
-}
-
-#elif defined(__mips__)
+#if defined(__mips__)
#if defined(__misp16) || defined(__mips_micromips)
#error "Unsupported encoding"