[PATCH] linux-user: Add /proc/cpuinfo handler for RISC-V

[Andreas Schwab <schwab@suse.de>]

Signed-off-by: Andreas Schwab <schwab@suse.de>
---
 linux-user/syscall.c | 30 ++++++++++++++++++++++++++++--
 1 file changed, 28 insertions(+), 2 deletions(-)

diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 69f740ff98..c72456a34b 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -8231,7 +8231,8 @@ void target_exception_dump(CPUArchState *env, const char *fmt, int code)
 }
 
 #if HOST_BIG_ENDIAN != TARGET_BIG_ENDIAN || \
-    defined(TARGET_SPARC) || defined(TARGET_M68K) || defined(TARGET_HPPA)
+    defined(TARGET_SPARC) || defined(TARGET_M68K) || defined(TARGET_HPPA) || \
+    defined(TARGET_RISCV)
 static int is_proc(const char *filename, const char *entry)
 {
     return strcmp(filename, entry) == 0;
@@ -8309,6 +8310,31 @@ static int open_cpuinfo(CPUArchState *cpu_env, int fd)
 }
 #endif
 
+#if defined(TARGET_RISCV)
+static int open_cpuinfo(CPUArchState *cpu_env, int fd)
+{
+    int i, num_cpus;
+
+    num_cpus = sysconf(_SC_NPROCESSORS_ONLN);
+    for (i = 0; i < num_cpus; i++) {
+        dprintf(fd, "processor\t: %d\n", i);
+        dprintf(fd, "hart\t\t: %d\n", i);
+#if defined(TARGET_RISCV32)
+        dprintf(fd, "isa\t\t: rv32imafdc\n");
+        dprintf(fd, "mmu\t\t: sv32\n");
+#endif
+#if defined(TARGET_RISCV64)
+        dprintf(fd, "isa\t\t: rv64imafdc\n");
+        dprintf(fd, "mmu\t\t: sv57\n");
+#endif
+        dprintf(fd, "mvendorid\t: 0x0\n");
+        dprintf(fd, "marchid\t\t: 0x0\n");
+        dprintf(fd, "mimpid\t\t: 0x0\n\n");
+    }
+    return 0;
+}
+#endif
+
 #if defined(TARGET_M68K)
 static int open_hardware(CPUArchState *cpu_env, int fd)
 {
@@ -8333,7 +8359,7 @@ static int do_openat(CPUArchState *cpu_env, int dirfd, const char *pathname, int
 #if HOST_BIG_ENDIAN != TARGET_BIG_ENDIAN
         { "/proc/net/route", open_net_route, is_proc },
 #endif
-#if defined(TARGET_SPARC) || defined(TARGET_HPPA)
+#if defined(TARGET_SPARC) || defined(TARGET_HPPA) || defined(TARGET_RISCV)
         { "/proc/cpuinfo", open_cpuinfo, is_proc },
 #endif
 #if defined(TARGET_M68K)
-- 
2.40.1


-- 
Andreas Schwab, SUSE Labs, schwab@suse.de
GPG Key fingerprint = 0196 BAD8 1CE9 1970 F4BE  1748 E4D4 88E3 0EEA B9D7
"And now for something completely different."