[Qemu-devel] [PATCH 3/3] linux-user: MIPS set cpu to r6 CPU if binary is R6

[Laurent Vivier <laurent@vivier.eu>]

From: YunQiang Su <syq@debian.org>

So here we need to detect the version of binaries and set
cpu_model for it.

[lv: original patch modified to move code into get_cpu_model()]
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
---

Notes:
    YunQiang Su, please add your Signed-off-by that was
    missing in your original patch.

 include/elf.h     |  4 ++++
 linux-user/main.c | 10 ++++++++++
 2 files changed, 14 insertions(+)

diff --git a/include/elf.h b/include/elf.h
index e8a515ce3d..f2104809b1 100644
--- a/include/elf.h
+++ b/include/elf.h
@@ -40,6 +40,10 @@ typedef int64_t  Elf64_Sxword;
 #define EF_MIPS_ARCH_5		0x40000000	/* -mips5 code.  */
 #define EF_MIPS_ARCH_32		0x50000000	/* MIPS32 code.  */
 #define EF_MIPS_ARCH_64		0x60000000	/* MIPS64 code.  */
+#define EF_MIPS_ARCH_32R2       0x70000000      /* MIPS32r2 code.  */
+#define EF_MIPS_ARCH_64R2       0x80000000      /* MIPS64r2 code.  */
+#define EF_MIPS_ARCH_32R6       0x90000000      /* MIPS32r6 code.  */
+#define EF_MIPS_ARCH_64R6       0xa0000000      /* MIPS64r6 code.  */
 
 /* The ABI of a file. */
 #define EF_MIPS_ABI_O32		0x00001000	/* O32 ABI.  */
diff --git a/linux-user/main.c b/linux-user/main.c
index 2fc2267fd4..3229ef079e 100644
--- a/linux-user/main.c
+++ b/linux-user/main.c
@@ -4285,9 +4285,19 @@ static const char *get_cpu_model(int fd)
     return "Fujitsu MB86904";
 #endif
 #elif defined(TARGET_MIPS)
+    int ret;
+    uint32_t eflags;
+
+    ret = get_elf_eflags(fd, &eflags);
 #if defined(TARGET_ABI_MIPSN32) || defined(TARGET_ABI_MIPSN64)
+    if (ret == 0 && (eflags & EF_MIPS_ARCH_64R6) != 0) {
+        return "I6400";
+    }
     return "5KEf";
 #else
+    if (ret == 0 && (eflags & EF_MIPS_ARCH_32R6) != 0) {
+        return "mips32r6-generic";
+    }
     return "24Kf";
 #endif
 #elif defined TARGET_OPENRISC
-- 
2.14.3