linux-user: Move get_elf_platform to arm/elfload.c

Move the aarch32 get_elf_platform to arm/elfload.c; pass in CPUState.
Create a simple version in aarch64/elfload.c, which we must do at the
same time because of the ifdef dependency between TARGET_AARCH64
and TARGET_ARM.

Since all versions of get_elf_platform now have the same
signature, remove the ifdef from the declaration in loader.h.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

linux-user/aarch64/elfload.c

@@ -342,3 +342,8 @@ const char *elf_hwcap2_str(uint32_t bit)
 
     return bit < ARRAY_SIZE(hwcap_str) ? hwcap_str[bit] : NULL;
 }
+
+const char *get_elf_platform(CPUState *cs)
+{
+    return TARGET_BIG_ENDIAN ? "aarch64_be" : "aarch64";
+}

linux-user/aarch64/target_elf.h

@@ -10,5 +10,6 @@
 
 #define HAVE_ELF_HWCAP          1
 #define HAVE_ELF_HWCAP2         1
+#define HAVE_ELF_PLATFORM       1
 
 #endif

linux-user/arm/elfload.c

@@ -170,3 +170,32 @@ const char *elf_hwcap2_str(uint32_t bit)
 
     return bit < ARRAY_SIZE(hwcap_str) ? hwcap_str[bit] : NULL;
 }
+
+const char *get_elf_platform(CPUState *cs)
+{
+    CPUARMState *env = cpu_env(cs);
+
+#if TARGET_BIG_ENDIAN
+# define END  "b"
+#else
+# define END  "l"
+#endif
+
+    if (arm_feature(env, ARM_FEATURE_V8)) {
+        return "v8" END;
+    } else if (arm_feature(env, ARM_FEATURE_V7)) {
+        if (arm_feature(env, ARM_FEATURE_M)) {
+            return "v7m" END;
+        } else {
+            return "v7" END;
+        }
+    } else if (arm_feature(env, ARM_FEATURE_V6)) {
+        return "v6" END;
+    } else if (arm_feature(env, ARM_FEATURE_V5)) {
+        return "v5" END;
+    } else {
+        return "v4" END;
+    }
+
+#undef END
+}

linux-user/arm/target_elf.h

@@ -10,5 +10,6 @@
 
 #define HAVE_ELF_HWCAP          1
 #define HAVE_ELF_HWCAP2         1
+#define HAVE_ELF_PLATFORM       1
 
 #endif

linux-user/elfload.c

@@ -309,6 +309,8 @@ static void elf_core_copy_regs(target_elf_gregset_t *regs, const CPUX86State *en
 
 #ifdef TARGET_ARM
 
+#define ELF_PLATFORM get_elf_platform(thread_cpu)
+
 #ifndef TARGET_AARCH64
 /* 32 bit ARM definitions */
 
@@ -434,37 +436,6 @@ static bool init_guest_commpage(void)
     return true;
 }
 
-#define ELF_PLATFORM get_elf_platform()
-
-static const char *get_elf_platform(void)
-{
-    CPUARMState *env = cpu_env(thread_cpu);
-
-#if TARGET_BIG_ENDIAN
-# define END  "b"
-#else
-# define END  "l"
-#endif
-
-    if (arm_feature(env, ARM_FEATURE_V8)) {
-        return "v8" END;
-    } else if (arm_feature(env, ARM_FEATURE_V7)) {
-        if (arm_feature(env, ARM_FEATURE_M)) {
-            return "v7m" END;
-        } else {
-            return "v7" END;
-        }
-    } else if (arm_feature(env, ARM_FEATURE_V6)) {
-        return "v6" END;
-    } else if (arm_feature(env, ARM_FEATURE_V5)) {
-        return "v5" END;
-    } else {
-        return "v4" END;
-    }
-
-#undef END
-}
-
 #if TARGET_BIG_ENDIAN
 #include "elf.h"
 #include "vdso-be8.c.inc"
@@ -487,11 +458,6 @@ static const VdsoImageInfo *vdso_image_info(uint32_t elf_flags)
 
 #define ELF_ARCH        EM_AARCH64
 #define ELF_CLASS       ELFCLASS64
-#if TARGET_BIG_ENDIAN
-# define ELF_PLATFORM    "aarch64_be"
-#else
-# define ELF_PLATFORM    "aarch64"
-#endif
 
 static inline void init_thread(struct target_pt_regs *regs,
                                struct image_info *infop)

linux-user/loader.h

@@ -105,8 +105,6 @@ abi_ulong get_elf_hwcap(CPUState *cs);
 abi_ulong get_elf_hwcap2(CPUState *cs);
 const char *elf_hwcap_str(uint32_t bit);
 const char *elf_hwcap2_str(uint32_t bit);
-#if defined(TARGET_I386)
 const char *get_elf_platform(CPUState *cs);
-#endif
 
 #endif /* LINUX_USER_LOADER_H */