linux-user: Add AT_PLATFORM for arm

Message ID 20190212073628.9665-1-richard.henderson@linaro.org
State New
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Series
  • linux-user: Add AT_PLATFORM for arm
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Commit Message

Richard Henderson Feb. 12, 2019, 7:36 a.m.
Fixes: https://bugs.launchpad.net/bugs/1813034
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 linux-user/elfload.c | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)

Patch

diff --git a/linux-user/elfload.c b/linux-user/elfload.c
index 775a36ccdd..dde640a2ea 100644
--- a/linux-user/elfload.c
+++ b/linux-user/elfload.c
@@ -500,6 +500,35 @@  static uint32_t get_elf_hwcap2(void)
 #undef GET_FEATURE
 #undef GET_FEATURE_ID
 
+#define ELF_PLATFORM get_elf_platform()
+
+static const char *get_elf_platform(void)
+{
+    CPUARMState *env = thread_cpu->env_ptr;
+
+#ifdef TARGET_WORDS_BIGENDIAN
+# define END  "b"
+#else
+# define END  "l"
+#endif
+
+    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
+}
+
 #else
 /* 64 bit ARM definitions */
 #define ELF_START_MMAP 0x80000000