target-alpha: Fixes for alpha-linux syscalls.

1. Add correct definitions of error numbers.
2. Implement SYS_osf_sigprocmask
3. Implement SYS_osf_get/setsysinfo for IEEE_FP_CONTROL.

This last requires exposing the FPCR value to do_syscall.
Since this value is actually split up into the float_status,
expose routines from helper.c to access it.

Finally, also add a float_exception_mask field to float_status.
We don't actually use it to control delivery of exceptions to
the emulator yet, but simply hold the value that we placed there
when loading/storing the FPCR.

Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>

2 files changed, 339 insertions, 10 deletions

diff --git a/linux-user/alpha/syscall.h b/linux-user/alpha/syscall.h
index 394afec56c..15a0100335 100644
--- a/linux-user/alpha/syscall.h
+++ b/linux-user/alpha/syscall.h
@@ -39,3 +39,215 @@ struct target_pt_regs {
 };
 
 #define UNAME_MACHINE "alpha"
+
+#undef TARGET_EDEADLK
+#define TARGET_EDEADLK		11
+#undef TARGET_EAGAIN
+#define TARGET_EAGAIN		35
+#undef TARGET_EINPROGRESS
+#define TARGET_EINPROGRESS	36
+#undef TARGET_EALREADY
+#define TARGET_EALREADY		37
+#undef TARGET_ENOTSOCK
+#define TARGET_ENOTSOCK		38
+#undef TARGET_EDESTADDRREQ
+#define TARGET_EDESTADDRREQ	39
+#undef TARGET_EMSGSIZE
+#define TARGET_EMSGSIZE		40
+#undef TARGET_EPROTOTYPE
+#define TARGET_EPROTOTYPE	41
+#undef TARGET_ENOPROTOOPT
+#define TARGET_ENOPROTOOPT	42
+#undef TARGET_EPROTONOSUPPORT
+#define TARGET_EPROTONOSUPPORT	43
+#undef TARGET_ESOCKTNOSUPPORT
+#define TARGET_ESOCKTNOSUPPORT	44
+#undef TARGET_EOPNOTSUPP
+#define TARGET_EOPNOTSUPP	45
+#undef TARGET_EPFNOSUPPORT
+#define TARGET_EPFNOSUPPORT	46
+#undef TARGET_EAFNOSUPPORT
+#define TARGET_EAFNOSUPPORT	47
+#undef TARGET_EADDRINUSE
+#define TARGET_EADDRINUSE	48
+#undef TARGET_EADDRNOTAVAIL
+#define TARGET_EADDRNOTAVAIL	49
+#undef TARGET_ENETDOWN
+#define TARGET_ENETDOWN		50
+#undef TARGET_ENETUNREACH
+#define TARGET_ENETUNREACH	51
+#undef TARGET_ENETRESET
+#define TARGET_ENETRESET	52
+#undef TARGET_ECONNABORTED
+#define TARGET_ECONNABORTED	53
+#undef TARGET_ECONNRESET
+#define TARGET_ECONNRESET	54
+#undef TARGET_ENOBUFS
+#define TARGET_ENOBUFS		55
+#undef TARGET_EISCONN
+#define TARGET_EISCONN		56
+#undef TARGET_ENOTCONN
+#define TARGET_ENOTCONN		57
+#undef TARGET_ESHUTDOWN
+#define TARGET_ESHUTDOWN	58
+#undef TARGET_ETOOMANYREFS
+#define TARGET_ETOOMANYREFS	59
+#undef TARGET_ETIMEDOUT
+#define TARGET_ETIMEDOUT	60
+#undef TARGET_ECONNREFUSED
+#define TARGET_ECONNREFUSED	61
+#undef TARGET_ELOOP
+#define TARGET_ELOOP		62
+#undef TARGET_ENAMETOOLONG
+#define TARGET_ENAMETOOLONG	63
+#undef TARGET_EHOSTDOWN
+#define TARGET_EHOSTDOWN	64
+#undef TARGET_EHOSTUNREACH
+#define TARGET_EHOSTUNREACH	65
+#undef TARGET_ENOTEMPTY
+#define TARGET_ENOTEMPTY	66
+// Unused			67
+#undef TARGET_EUSERS
+#define TARGET_EUSERS		68
+#undef TARGET_EDQUOT
+#define TARGET_EDQUOT		69
+#undef TARGET_ESTALE
+#define TARGET_ESTALE		70
+#undef TARGET_EREMOTE
+#define TARGET_EREMOTE		71
+// Unused			72-76
+#undef TARGET_ENOLCK
+#define TARGET_ENOLCK		77
+#undef TARGET_ENOSYS
+#define TARGET_ENOSYS		78
+// Unused			79
+#undef TARGET_ENOMSG
+#define TARGET_ENOMSG		80
+#undef TARGET_EIDRM
+#define TARGET_EIDRM		81
+#undef TARGET_ENOSR
+#define TARGET_ENOSR		82
+#undef TARGET_ETIME
+#define TARGET_ETIME		83
+#undef TARGET_EBADMSG
+#define TARGET_EBADMSG		84
+#undef TARGET_EPROTO
+#define TARGET_EPROTO		85
+#undef TARGET_ENODATA
+#define TARGET_ENODATA		86
+#undef TARGET_ENOSTR
+#define TARGET_ENOSTR		87
+#undef TARGET_ECHRNG
+#define TARGET_ECHRNG		88
+#undef TARGET_EL2NSYNC
+#define TARGET_EL2NSYNC		89
+#undef TARGET_EL3HLT
+#define TARGET_EL3HLT		90
+#undef TARGET_EL3RST
+#define TARGET_EL3RST		91
+#undef TARGET_ENOPKG
+#define TARGET_ENOPKG		92
+#undef TARGET_ELNRNG
+#define TARGET_ELNRNG		93
+#undef TARGET_EUNATCH
+#define TARGET_EUNATCH		94
+#undef TARGET_ENOCSI
+#define TARGET_ENOCSI		95
+#undef TARGET_EL2HLT
+#define TARGET_EL2HLT		96
+#undef TARGET_EBADE
+#define TARGET_EBADE		97
+#undef TARGET_EBADR
+#define TARGET_EBADR		98
+#undef TARGET_EXFULL
+#define TARGET_EXFULL		99
+#undef TARGET_ENOANO
+#define TARGET_ENOANO		100
+#undef TARGET_EBADRQC
+#define TARGET_EBADRQC		101
+#undef TARGET_EBADSLT
+#define TARGET_EBADSLT		102
+// Unused			103
+#undef TARGET_EBFONT
+#define TARGET_EBFONT		104
+#undef TARGET_ENONET
+#define TARGET_ENONET		105
+#undef TARGET_ENOLINK
+#define TARGET_ENOLINK		106
+#undef TARGET_EADV
+#define TARGET_EADV		107
+#undef TARGET_ESRMNT
+#define TARGET_ESRMNT		108
+#undef TARGET_ECOMM
+#define TARGET_ECOMM		109
+#undef TARGET_EMULTIHOP
+#define TARGET_EMULTIHOP	110
+#undef TARGET_EDOTDOT
+#define TARGET_EDOTDOT		111
+#undef TARGET_EOVERFLOW
+#define TARGET_EOVERFLOW	112
+#undef TARGET_ENOTUNIQ
+#define TARGET_ENOTUNIQ		113
+#undef TARGET_EBADFD
+#define TARGET_EBADFD		114
+#undef TARGET_EREMCHG
+#define TARGET_EREMCHG		115
+#undef TARGET_EILSEQ
+#define TARGET_EILSEQ		116
+
+// Same as default		117-121
+
+#undef TARGET_ELIBACC
+#define TARGET_ELIBACC		122
+#undef TARGET_ELIBBAD
+#define TARGET_ELIBBAD		123
+#undef TARGET_ELIBSCN
+#define TARGET_ELIBSCN		124
+#undef TARGET_ELIBMAX
+#define TARGET_ELIBMAX		125
+#undef TARGET_ELIBEXEC
+#define TARGET_ELIBEXEC		126
+#undef TARGET_ERESTART
+#define TARGET_ERESTART		127
+#undef TARGET_ESTRPIPE
+#define TARGET_ESTRPIPE		128
+#undef TARGET_ENOMEDIUM
+#define TARGET_ENOMEDIUM	129
+#undef TARGET_EMEDIUMTYPE
+#define TARGET_EMEDIUMTYPE	130
+#undef TARGET_ECANCELED
+#define TARGET_ECANCELED	131
+#undef TARGET_ENOKEY
+#define TARGET_ENOKEY		132
+#undef TARGET_EKEYEXPIRED
+#define TARGET_EKEYEXPIRED	133
+#undef TARGET_EKEYREVOKED
+#define TARGET_EKEYREVOKED	134
+#undef TARGET_EKEYREJECTED
+#define TARGET_EKEYREJECTED	135
+#undef TARGET_EOWNERDEAD
+#define TARGET_EOWNERDEAD	136
+#undef TARGET_ENOTRECOVERABLE
+#define TARGET_ENOTRECOVERABLE	137
+#undef TARGET_ERFKILL
+#define TARGET_ERFKILL		138
+
+// For sys_osf_getsysinfo
+#define TARGET_GSI_UACPROC		8
+#define TARGET_GSI_IEEE_FP_CONTROL	45
+#define TARGET_GSI_IEEE_STATE_AT_SIGNAL	46
+#define TARGET_GSI_PROC_TYPE		60
+#define TARGET_GSI_GET_HWRPB		101
+
+// For sys_ofs_setsysinfo
+#define TARGET_SSI_NVPAIRS		1
+#define TARGET_SSI_IEEE_FP_CONTROL	14
+#define TARGET_SSI_IEEE_STATE_AT_SIGNAL	15
+#define TARGET_SSI_IEEE_IGNORE_STATE_AT_SIGNAL 16
+#define TARGET_SSI_IEEE_RAISE_EXCEPTION	1001
+
+#define TARGET_SSIN_UACPROC		6
+
+#define TARGET_UAC_NOPRINT		1
+#define TARGET_UAC_NOFIX		2
+#define TARGET_UAC_SIGBUS		4
diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index e38552ca1c..1acf1f5b64 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -6390,25 +6390,142 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
 #if defined(TARGET_NR_getxuid) && defined(TARGET_ALPHA)
    /* Alpha specific */
     case TARGET_NR_getxuid:
-	 {
-	    uid_t euid;
-	    euid=geteuid();
-	    ((CPUAlphaState *)cpu_env)->ir[IR_A4]=euid;
-	 }
+         {
+            uid_t euid;
+            euid=geteuid();
+            ((CPUAlphaState *)cpu_env)->ir[IR_A4]=euid;
+         }
         ret = get_errno(getuid());
         break;
 #endif
 #if defined(TARGET_NR_getxgid) && defined(TARGET_ALPHA)
    /* Alpha specific */
     case TARGET_NR_getxgid:
-	 {
-	    uid_t egid;
-	    egid=getegid();
-	    ((CPUAlphaState *)cpu_env)->ir[IR_A4]=egid;
-	 }
+         {
+            uid_t egid;
+            egid=getegid();
+            ((CPUAlphaState *)cpu_env)->ir[IR_A4]=egid;
+         }
         ret = get_errno(getgid());
         break;
 #endif
+#if defined(TARGET_NR_osf_getsysinfo) && defined(TARGET_ALPHA)
+    /* Alpha specific */
+    case TARGET_NR_osf_getsysinfo:
+        ret = -TARGET_EOPNOTSUPP;
+        switch (arg1) {
+          case TARGET_GSI_IEEE_FP_CONTROL:
+            {
+                uint64_t swcr, fpcr = cpu_alpha_load_fpcr (cpu_env);
+
+                /* Copied from linux ieee_fpcr_to_swcr.  */
+                swcr = (fpcr >> 35) & SWCR_STATUS_MASK;
+                swcr |= (fpcr >> 36) & SWCR_MAP_DMZ;
+                swcr |= (~fpcr >> 48) & (SWCR_TRAP_ENABLE_INV
+                                        | SWCR_TRAP_ENABLE_DZE
+                                        | SWCR_TRAP_ENABLE_OVF);
+                swcr |= (~fpcr >> 57) & (SWCR_TRAP_ENABLE_UNF
+                                        | SWCR_TRAP_ENABLE_INE);
+                swcr |= (fpcr >> 47) & SWCR_MAP_UMZ;
+                swcr |= (~fpcr >> 41) & SWCR_TRAP_ENABLE_DNO;
+
+                if (put_user_u64 (swcr, arg2))
+                        goto efault;
+                ret = 0;
+            }
+            break;
+
+          /* case GSI_IEEE_STATE_AT_SIGNAL:
+             -- Not implemented in linux kernel.
+             case GSI_UACPROC:
+             -- Retrieves current unaligned access state; not much used.
+             case GSI_PROC_TYPE:
+             -- Retrieves implver information; surely not used.
+             case GSI_GET_HWRPB:
+             -- Grabs a copy of the HWRPB; surely not used.
+          */
+        }
+        break;
+#endif
+#if defined(TARGET_NR_osf_setsysinfo) && defined(TARGET_ALPHA)
+    /* Alpha specific */
+    case TARGET_NR_osf_setsysinfo:
+        ret = -TARGET_EOPNOTSUPP;
+        switch (arg1) {
+          case TARGET_SSI_IEEE_FP_CONTROL:
+          case TARGET_SSI_IEEE_RAISE_EXCEPTION:
+            {
+                uint64_t swcr, fpcr, orig_fpcr;
+
+                if (get_user_u64 (swcr, arg2))
+                    goto efault;
+                orig_fpcr = cpu_alpha_load_fpcr (cpu_env);
+                fpcr = orig_fpcr & FPCR_DYN_MASK;
+
+                /* Copied from linux ieee_swcr_to_fpcr.  */
+                fpcr |= (swcr & SWCR_STATUS_MASK) << 35;
+                fpcr |= (swcr & SWCR_MAP_DMZ) << 36;
+                fpcr |= (~swcr & (SWCR_TRAP_ENABLE_INV
+                                  | SWCR_TRAP_ENABLE_DZE
+                                  | SWCR_TRAP_ENABLE_OVF)) << 48;
+                fpcr |= (~swcr & (SWCR_TRAP_ENABLE_UNF
+                                  | SWCR_TRAP_ENABLE_INE)) << 57;
+                fpcr |= (swcr & SWCR_MAP_UMZ ? FPCR_UNDZ | FPCR_UNFD : 0);
+                fpcr |= (~swcr & SWCR_TRAP_ENABLE_DNO) << 41;
+
+                cpu_alpha_store_fpcr (cpu_env, fpcr);
+                ret = 0;
+
+                if (arg1 == TARGET_SSI_IEEE_RAISE_EXCEPTION) {
+                    /* Old exceptions are not signaled.  */
+                    fpcr &= ~(orig_fpcr & FPCR_STATUS_MASK);
+
+                    /* If any exceptions set by this call, and are unmasked,
+                       send a signal.  */
+                    /* ??? FIXME */
+                }
+            }
+            break;
+
+          /* case SSI_NVPAIRS:
+             -- Used with SSIN_UACPROC to enable unaligned accesses.
+             case SSI_IEEE_STATE_AT_SIGNAL:
+             case SSI_IEEE_IGNORE_STATE_AT_SIGNAL:
+             -- Not implemented in linux kernel
+          */
+        }
+        break;
+#endif
+#ifdef TARGET_NR_osf_sigprocmask
+    /* Alpha specific.  */
+    case TARGET_NR_osf_sigprocmask:
+        {
+            abi_ulong mask;
+            int how = arg1;
+            sigset_t set, oldset;
+
+            switch(arg1) {
+            case TARGET_SIG_BLOCK:
+                how = SIG_BLOCK;
+                break;
+            case TARGET_SIG_UNBLOCK:
+                how = SIG_UNBLOCK;
+                break;
+            case TARGET_SIG_SETMASK:
+                how = SIG_SETMASK;
+                break;
+            default:
+                ret = -TARGET_EINVAL;
+                goto fail;
+            }
+            mask = arg2;
+            target_to_host_old_sigset(&set, &mask);
+            sigprocmask(arg1, &set, &oldset);
+            host_to_target_old_sigset(&mask, &oldset);
+            ret = mask;
+        }
+        break;
+#endif
 
 #ifdef TARGET_NR_getgid32
     case TARGET_NR_getgid32: