Merge remote-tracking branch 'rth/auxv-2' into staging

# By Richard Henderson
# Via Richard Henderson
* rth/auxv-2:
  linux-user: Use qemu_getauxval for AT_EXECFD
  util: Use qemu_getauxval in linux qemu_cache_utils_init
  tcg-s390: Use qemu_getauxval in query_facilities
  tcg-arm: Use qemu_getauxval
  tcg-ppc64: Use qemu_getauxval
  osdep: Create qemu_getauxval and qemu_init_auxval

Message-id: 1385757754-10702-1-git-send-email-rth@twiddle.net
Signed-off-by: Anthony Liguori <aliguori@amazon.com>

3 files changed, 100 insertions, 2 deletions

diff --git a/include/elf.h b/include/elf.h
index b818091c7b..667af6fc63 100644
--- a/include/elf.h
+++ b/include/elf.h
@@ -411,6 +411,65 @@ typedef struct {
 #define R_SPARC_5		44
 #define R_SPARC_6		45
 
+/* Bits present in AT_HWCAP for ARM.  */
+
+#define HWCAP_ARM_SWP           (1 << 0)
+#define HWCAP_ARM_HALF          (1 << 1)
+#define HWCAP_ARM_THUMB         (1 << 2)
+#define HWCAP_ARM_26BIT         (1 << 3)
+#define HWCAP_ARM_FAST_MULT     (1 << 4)
+#define HWCAP_ARM_FPA           (1 << 5)
+#define HWCAP_ARM_VFP           (1 << 6)
+#define HWCAP_ARM_EDSP          (1 << 7)
+#define HWCAP_ARM_JAVA          (1 << 8)
+#define HWCAP_ARM_IWMMXT        (1 << 9)
+#define HWCAP_ARM_CRUNCH        (1 << 10)
+#define HWCAP_ARM_THUMBEE       (1 << 11)
+#define HWCAP_ARM_NEON          (1 << 12)
+#define HWCAP_ARM_VFPv3         (1 << 13)
+#define HWCAP_ARM_VFPv3D16      (1 << 14)       /* also set for VFPv4-D16 */
+#define HWCAP_ARM_TLS           (1 << 15)
+#define HWCAP_ARM_VFPv4         (1 << 16)
+#define HWCAP_ARM_IDIVA         (1 << 17)
+#define HWCAP_ARM_IDIVT         (1 << 18)
+#define HWCAP_IDIV              (HWCAP_IDIVA | HWCAP_IDIVT)
+#define HWCAP_VFPD32            (1 << 19)       /* set if VFP has 32 regs */
+#define HWCAP_LPAE              (1 << 20)
+
+/* Bits present in AT_HWCAP for PowerPC.  */
+
+#define PPC_FEATURE_32                  0x80000000
+#define PPC_FEATURE_64                  0x40000000
+#define PPC_FEATURE_601_INSTR           0x20000000
+#define PPC_FEATURE_HAS_ALTIVEC         0x10000000
+#define PPC_FEATURE_HAS_FPU             0x08000000
+#define PPC_FEATURE_HAS_MMU             0x04000000
+#define PPC_FEATURE_HAS_4xxMAC          0x02000000
+#define PPC_FEATURE_UNIFIED_CACHE       0x01000000
+#define PPC_FEATURE_HAS_SPE             0x00800000
+#define PPC_FEATURE_HAS_EFP_SINGLE      0x00400000
+#define PPC_FEATURE_HAS_EFP_DOUBLE      0x00200000
+#define PPC_FEATURE_NO_TB               0x00100000
+#define PPC_FEATURE_POWER4              0x00080000
+#define PPC_FEATURE_POWER5              0x00040000
+#define PPC_FEATURE_POWER5_PLUS         0x00020000
+#define PPC_FEATURE_CELL                0x00010000
+#define PPC_FEATURE_BOOKE               0x00008000
+#define PPC_FEATURE_SMT                 0x00004000
+#define PPC_FEATURE_ICACHE_SNOOP        0x00002000
+#define PPC_FEATURE_ARCH_2_05           0x00001000
+#define PPC_FEATURE_PA6T                0x00000800
+#define PPC_FEATURE_HAS_DFP             0x00000400
+#define PPC_FEATURE_POWER6_EXT          0x00000200
+#define PPC_FEATURE_ARCH_2_06           0x00000100
+#define PPC_FEATURE_HAS_VSX             0x00000080
+
+#define PPC_FEATURE_PSERIES_PERFMON_COMPAT \
+                                        0x00000040
+
+#define PPC_FEATURE_TRUE_LE             0x00000002
+#define PPC_FEATURE_PPC_LE              0x00000001
+
 /* Bits present in AT_HWCAP, primarily for Sparc32.  */
 
 #define HWCAP_SPARC_FLUSH       1    /* CPU supports flush instruction. */
@@ -420,6 +479,20 @@ typedef struct {
 #define HWCAP_SPARC_V9		16
 #define HWCAP_SPARC_ULTRA3	32
 
+/* Bits present in AT_HWCAP for s390.  */
+
+#define HWCAP_S390_ESAN3        1
+#define HWCAP_S390_ZARCH        2
+#define HWCAP_S390_STFLE        4
+#define HWCAP_S390_MSA          8
+#define HWCAP_S390_LDISP        16
+#define HWCAP_S390_EIMM         32
+#define HWCAP_S390_DFP          64
+#define HWCAP_S390_HPAGE        128
+#define HWCAP_S390_ETF3EH       256
+#define HWCAP_S390_HIGH_GPRS    512
+#define HWCAP_S390_TE           1024
+
 /*
  * 68k ELF relocation types
  */
diff --git a/include/qemu/cache-utils.h b/include/qemu/cache-utils.h
index 2c57f78fc1..211245bea0 100644
--- a/include/qemu/cache-utils.h
+++ b/include/qemu/cache-utils.h
@@ -12,7 +12,7 @@ struct qemu_cache_conf {
 
 extern struct qemu_cache_conf qemu_cache_conf;
 
-void qemu_cache_utils_init(char **envp);
+void qemu_cache_utils_init(void);
 
 /* mildly adjusted code from tcg-dyngen.c */
 static inline void flush_icache_range(uintptr_t start, uintptr_t stop)
@@ -38,7 +38,7 @@ static inline void flush_icache_range(uintptr_t start, uintptr_t stop)
 }
 
 #else
-#define qemu_cache_utils_init(envp) do { (void) (envp); } while (0)
+#define qemu_cache_utils_init() do { } while (0)
 #endif
 
 #endif /* QEMU_CACHE_UTILS_H */
diff --git a/include/qemu/osdep.h b/include/qemu/osdep.h
index 26136f16ec..b3e2b6d8ea 100644
--- a/include/qemu/osdep.h
+++ b/include/qemu/osdep.h
@@ -215,4 +215,29 @@ bool fips_get_state(void);
  */
 char *qemu_get_local_state_pathname(const char *relative_pathname);
 
+/**
+ * qemu_getauxval:
+ * @type: the auxiliary vector key to lookup
+ *
+ * Search the auxiliary vector for @type, returning the value
+ * or 0 if @type is not present.
+ */
+#if defined(CONFIG_GETAUXVAL) || defined(__linux__)
+unsigned long qemu_getauxval(unsigned long type);
+#else
+static inline unsigned long qemu_getauxval(unsigned long type) { return 0; }
+#endif
+
+/**
+ * qemu_init_auxval:
+ * @envp: the third argument to main
+ *
+ * If supported and required, locate the auxiliary vector at program startup.
+ */
+#if defined(CONFIG_GETAUXVAL) || !defined(__linux__)
+static inline void qemu_init_auxval(char **envp) { }
+#else
+void qemu_init_auxval(char **envp);
+#endif
+
 #endif