linux-user: Add support for /proc/cpuinfo on hppa platform

Provide our own /proc/cpuinfo file for the hppa (parisc) platform.

Signed-off-by: Helge Deller <deller@gmx.de>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20200424210648.GA26715@ls3530.fritz.box>
[lv: s/an/our/ and add TARGET_HPPA to guard is_proc()]
Signed-off-by: Laurent Vivier <laurent@vivier.eu>

linux-user/syscall.c

@@ -7378,7 +7378,7 @@ static int is_proc_myself(const char *filename, const char *entry)
 }
 
 #if defined(HOST_WORDS_BIGENDIAN) != defined(TARGET_WORDS_BIGENDIAN) || \
-    defined(TARGET_SPARC) || defined(TARGET_M68K)
+    defined(TARGET_SPARC) || defined(TARGET_M68K) || defined(TARGET_HPPA)
 static int is_proc(const char *filename, const char *entry)
 {
     return strcmp(filename, entry) == 0;
@@ -7438,6 +7438,18 @@ static int open_cpuinfo(void *cpu_env, int fd)
 }
 #endif
 
+#if defined(TARGET_HPPA)
+static int open_cpuinfo(void *cpu_env, int fd)
+{
+    dprintf(fd, "cpu family\t: PA-RISC 1.1e\n");
+    dprintf(fd, "cpu\t\t: PA7300LC (PCX-L2)\n");
+    dprintf(fd, "capabilities\t: os32\n");
+    dprintf(fd, "model\t\t: 9000/778/B160L\n");
+    dprintf(fd, "model name\t: Merlin L2 160 QEMU (9000/778/B160L)\n");
+    return 0;
+}
+#endif
+
 #if defined(TARGET_M68K)
 static int open_hardware(void *cpu_env, int fd)
 {
@@ -7462,7 +7474,7 @@ static int do_openat(void *cpu_env, int dirfd, const char *pathname, int flags,
 #if defined(HOST_WORDS_BIGENDIAN) != defined(TARGET_WORDS_BIGENDIAN)
         { "/proc/net/route", open_net_route, is_proc },
 #endif
-#if defined(TARGET_SPARC)
+#if defined(TARGET_SPARC) || defined(TARGET_HPPA)
         { "/proc/cpuinfo", open_cpuinfo, is_proc },
 #endif
 #if defined(TARGET_M68K)