linux-user: Move get_elf_platform to {i386,x86_64}/elfload.c

Move get_elf_platform to i386/elfload.c; pass in CPUState.
Create a simple get_elf_platform for x86_64.
Introduce HAVE_ELF_PLATFORM.

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

linux-user/elfload.c

@@ -149,12 +149,12 @@ typedef abi_int         target_pid_t;
 
 #ifdef TARGET_I386
 
+#define ELF_PLATFORM get_elf_platform(thread_cpu)
+
 #ifdef TARGET_X86_64
 #define ELF_CLASS      ELFCLASS64
 #define ELF_ARCH       EM_X86_64
 
-#define ELF_PLATFORM   "x86_64"
-
 static inline void init_thread(struct target_pt_regs *regs, struct image_info *infop)
 {
     regs->rax = 0;
@@ -237,22 +237,8 @@ static bool init_guest_commpage(void)
 #define ELF_CLASS       ELFCLASS32
 #define ELF_ARCH        EM_386
 
-#define ELF_PLATFORM get_elf_platform()
 #define EXSTACK_DEFAULT true
 
-static const char *get_elf_platform(void)
-{
-    static char elf_platform[] = "i386";
-    int family = object_property_get_int(OBJECT(thread_cpu), "family", NULL);
-    if (family > 6) {
-        family = 6;
-    }
-    if (family >= 3) {
-        elf_platform[1] = '0' + family;
-    }
-    return elf_platform;
-}
-
 static inline void init_thread(struct target_pt_regs *regs,
                                struct image_info *infop)
 {

linux-user/i386/elfload.c

@@ -14,3 +14,16 @@ abi_ulong get_elf_hwcap(CPUState *cs)
 {
     return cpu_env(cs)->features[FEAT_1_EDX];
 }
+
+const char *get_elf_platform(CPUState *cs)
+{
+    static char elf_platform[] = "i386";
+    int family = object_property_get_int(OBJECT(cs), "family", NULL);
+    if (family > 6) {
+        family = 6;
+    }
+    if (family >= 3) {
+        elf_platform[1] = '0' + family;
+    }
+    return elf_platform;
+}

linux-user/i386/target_elf.h

@@ -9,5 +9,6 @@
 #define I386_TARGET_ELF_H
 
 #define HAVE_ELF_HWCAP          1
+#define HAVE_ELF_PLATFORM       1
 
 #endif

linux-user/loader.h

@@ -105,5 +105,8 @@ 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 */

linux-user/x86_64/elfload.c

@@ -14,3 +14,8 @@ abi_ulong get_elf_hwcap(CPUState *cs)
 {
     return cpu_env(cs)->features[FEAT_1_EDX];
 }
+
+const char *get_elf_platform(CPUState *cs)
+{
+    return "x86_64";
+}

linux-user/x86_64/target_elf.h

@@ -9,5 +9,6 @@
 #define X86_64_TARGET_ELF_H
 
 #define HAVE_ELF_HWCAP          1
+#define HAVE_ELF_PLATFORM       1
 
 #endif