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Add GLRO(dl_hwcap2) for new AT_HWCAP2 auxv_t a_type.
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ChangeLog
25
ChangeLog
@ -1,3 +1,28 @@
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2013-06-28 Ryan S. Arnold <rsa@linux.vnet.ibm.com>
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* elf/dl-support.c (_dl_hwcap2): Add a new hwcap field for more
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hardware capabilities in support of AT_HWCAP2.
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(_dl_aux_init): Read AT_HWCAP2 into GLRO(dl_hwcap2).
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* elf/dl-sysdep.c (_dl_sysdep_start): Read AT_HWCAP2 into
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GLRO(dl_hwcap2).
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(_dl_show_auxv): Add support for calling _dl_procinfo to display
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AT_HWCAP2. If a platform doesn't chose to handle displaying AT_HWCAP2
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explicitly the unknown a_type display mechanism is used.
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* misc/getauxval.c (__getauxval): Return GLRO(dl_hwcap2) on AT_HWCAP2.
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* sysdeps/generic/ldsodefs.h (rtld_global_ro): Add _dl_hwcap2 as a new
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struct member.
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* sysdeps/generic/dl-procinfo.h (_dl_procinfo): Add TYPE parameter
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to macro prototype for AT_HWCAP2 support.
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* sysdeps/i386/dl-procinfo.h: Likewise.
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* sysdeps/s390/dl-procinfo.h: Likewise.
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* sysdeps/powerpc/dl-procinfo.h (_dl_procinfo): Add TYPE parameter to
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macro prototype for AT_HWCAP2 support. Make WORD unsigned long int
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rather than signed int. Stub in handler for TYPE == AT_HWCAP2 to
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return -1 for unknown a_type display fallback.
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* sysdeps/sparc/dl-procinfo.h: Likewise.
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* sysdeps/unix/sysv/linux/i386/dl-procinfo.h: Likewise.
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* sysdeps/unix/sysv/linux/s390/dl-procinfo.h: Likewise.
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2013-06-28 Joseph Myers <joseph@codesourcery.com>
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* sysdeps/unix/sysv/linux/mmap64.c (__mmap64): Shift by page_shift
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@ -165,6 +165,7 @@ ElfW(auxv_t) *_dl_auxv;
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const ElfW(Phdr) *_dl_phdr;
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size_t _dl_phnum;
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uint64_t _dl_hwcap __attribute__ ((nocommon));
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uint64_t _dl_hwcap2 __attribute__ ((nocommon));
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/* This is not initialized to HWCAP_IMPORTANT, matching the definition
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of _dl_important_hwcaps, below, where no hwcap strings are ever
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@ -249,6 +250,9 @@ _dl_aux_init (ElfW(auxv_t) *av)
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case AT_HWCAP:
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GLRO(dl_hwcap) = (unsigned long int) av->a_un.a_val;
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break;
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case AT_HWCAP2:
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GLRO(dl_hwcap2) = (unsigned long int) av->a_un.a_val;
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break;
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#ifdef NEED_DL_SYSINFO
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case AT_SYSINFO:
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GL(dl_sysinfo) = av->a_un.a_val;
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@ -156,6 +156,9 @@ _dl_sysdep_start (void **start_argptr,
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case AT_HWCAP:
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GLRO(dl_hwcap) = (unsigned long int) av->a_un.a_val;
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break;
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case AT_HWCAP2:
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GLRO(dl_hwcap2) = (unsigned long int) av->a_un.a_val;
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break;
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case AT_CLKTCK:
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GLRO(dl_clktck) = av->a_un.a_val;
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break;
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@ -303,6 +306,7 @@ _dl_show_auxv (void)
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[AT_SYSINFO - 2] = { "SYSINFO: 0x", hex },
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[AT_SYSINFO_EHDR - 2] = { "SYSINFO_EHDR: 0x", hex },
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[AT_RANDOM - 2] = { "RANDOM: 0x", hex },
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[AT_HWCAP2 - 2] = { "HWCAP2: 0x", hex },
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};
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unsigned int idx = (unsigned int) (av->a_type - 2);
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@ -314,10 +318,10 @@ _dl_show_auxv (void)
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assert (AT_NULL == 0);
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assert (AT_IGNORE == 1);
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if (av->a_type == AT_HWCAP)
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if (av->a_type == AT_HWCAP || av->a_type == AT_HWCAP2)
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{
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/* This is handled special. */
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if (_dl_procinfo (av->a_un.a_val) == 0)
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/* These are handled in a special way per platform. */
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if (_dl_procinfo (av->a_type, av->a_un.a_val) == 0)
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continue;
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}
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@ -26,6 +26,8 @@ __getauxval (unsigned long int type)
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if (type == AT_HWCAP)
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return GLRO(dl_hwcap);
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else if (type == AT_HWCAP2)
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return GLRO(dl_hwcap2);
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for (p = GLRO(dl_auxv); p->a_type != AT_NULL; p++)
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if (p->a_type == type)
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@ -1,3 +1,8 @@
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2013-06-28 Ryan S. Arnold <rsa@linux.vnet.ibm.com>
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* sysdeps/alpha/dl-procinfo.h (_dl_procinfo): Add TYPE parameter
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to macro prototype for AT_HWCAP2 support.
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2013-06-24 Richard Henderson <rth@redhat.com>
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[BZ #15666]
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@ -1,3 +1,10 @@
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2013-06-28 Ryan S. Arnold <rsa@linux.vnet.ibm.com>
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* sysdeps/unix/sysv/linux/arm/dl-procinfo.h (_dl_procinfo): Add
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TYPE parameter to macro prototype for AT_HWCAP2 support. Make WORD
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unsigned long int rather than signed int. Stub in handler for TYPE ==
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AT_HWCAP2 to return -1 for unknown a_type display fallback.
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2013-06-18 Roland McGrath <roland@hack.frob.com>
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* sysdeps/arm/arm-mcount.S: Comment typo fix.
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@ -1,3 +1,8 @@
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2013-06-28 Ryan S. Arnold <rsa@linux.vnet.ibm.com>
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* sysdeps/mips/dl-procinfo.h (_dl_procinfo): Add TYPE parameter
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to macro prototype for AT_HWCAP2 support.
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2013-06-27 Maciej W. Rozycki <macro@codesourcery.com>
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* sysdeps/unix/sysv/linux/mips/dl-static.c: Do not include
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@ -51,7 +51,7 @@ _dl_string_platform (const char *str)
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};
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/* We cannot provide a general printing function. */
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#define _dl_procinfo(word) -1
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#define _dl_procinfo(type, word) -1
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/* There are no hardware capabilities defined. */
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#define _dl_hwcap_string(idx) ""
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@ -51,7 +51,7 @@ _dl_string_platform (const char *str)
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};
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/* We cannot provide a general printing function. */
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#define _dl_procinfo(word) -1
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#define _dl_procinfo(type, word) -1
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/* There are no hardware capabilities defined. */
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#define _dl_hwcap_string(idx) ""
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@ -31,10 +31,14 @@
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static inline int
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__attribute__ ((unused))
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_dl_procinfo (int word)
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_dl_procinfo (unsigned int type, unsigned long int word)
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{
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int i;
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/* Fallback to unknown output mechanism. */
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if (type == AT_HWCAP2)
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return -1;
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_dl_printf ("AT_HWCAP: ");
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for (i = 0; i < _DL_HWCAP_COUNT; ++i)
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@ -21,7 +21,7 @@
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#define _DL_PROCINFO_H 1
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/* We cannot provide a general printing function. */
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#define _dl_procinfo(word) -1
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#define _dl_procinfo(type, word) -1
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/* There are no hardware capabilities defined. */
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#define _dl_hwcap_string(idx) ""
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@ -554,6 +554,10 @@ struct rtld_global_ro
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EXTERN struct link_map *_dl_sysinfo_map;
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#endif
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/* Mask for more hardware capabilities that are available on some
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platforms. */
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EXTERN uint64_t _dl_hwcap2;
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#ifdef SHARED
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/* We add a function table to _rtld_global which is then used to
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call the function instead of going through the PLT. The result
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@ -61,7 +61,7 @@ enum
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};
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/* We cannot provide a general printing function. */
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#define _dl_procinfo(word) -1
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#define _dl_procinfo(type, word) -1
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static inline const char *
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__attribute__ ((unused))
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@ -159,8 +159,12 @@ _dl_string_platform (const char *str)
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#ifdef IS_IN_rtld
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static inline int
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__attribute__ ((unused))
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_dl_procinfo (int word)
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_dl_procinfo (unsigned int type, unsigned long int word)
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{
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/* Fallback to unknown output mechanism. */
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if (type == AT_HWCAP2)
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return -1;
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_dl_printf ("AT_HWCAP: ");
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for (int i = _DL_HWCAP_FIRST; i < _DL_HWCAP_COUNT; ++i)
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@ -56,7 +56,7 @@ enum
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| HWCAP_S390_EIMM | HWCAP_S390_DFP)
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/* We cannot provide a general printing function. */
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#define _dl_procinfo(word) -1
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#define _dl_procinfo(type, word) -1
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static inline const char *
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__attribute__ ((unused))
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static inline int
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__attribute__ ((unused))
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_dl_procinfo (int word)
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_dl_procinfo (unsigned int type, unsigned long int word)
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{
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int i;
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/* Fallback to unknown output mechanism. */
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if (type == AT_HWCAP2)
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return -1;
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_dl_printf ("AT_HWCAP: ");
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for (i = 0; i < _DL_HWCAP_COUNT; ++i)
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#undef _dl_procinfo
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static inline int
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__attribute__ ((unused))
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_dl_procinfo (int word)
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_dl_procinfo (unsigned int type, unsigned long int word)
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{
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/* This table should match the information from arch/i386/kernel/setup.c
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in the kernel sources. */
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int i;
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/* Fallback to unknown output mechanism. */
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if (type == AT_HWCAP2)
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return -1;
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_dl_printf ("AT_HWCAP: ");
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for (i = 0; i < _DL_HWCAP_COUNT; ++i)
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#undef _dl_procinfo
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static inline int
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__attribute__ ((unused))
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_dl_procinfo (int word)
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_dl_procinfo (unsigned int type, unsigned long int word)
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{
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/* This table should match the information from arch/s390/kernel/setup.c
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in the kernel sources. */
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int i;
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/* Fallback to unknown output mechanism. */
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if (type == AT_HWCAP2)
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return -1;
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_dl_printf ("AT_HWCAP: ");
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for (i = 0; i < _DL_HWCAP_COUNT; ++i)
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