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authorUlrich Drepper <drepper@redhat.com>1998-03-30 18:45:41 +0000
committerUlrich Drepper <drepper@redhat.com>1998-03-30 18:45:41 +0000
commite8e0bee5dd414bb6d5ee7e6a1fa37f330dcb38e4 (patch)
tree2a22ed2642b6dc5da6474928ca51dfea783d5c5b
parent001426b8993e21615a756fcabcbead8a62a2125c (diff)
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Update.
1998-03-30 Ulrich Drepper <drepper@cygnus.com> * sysdeps/generic/dl-sysdep.c (_dl_important_hwcaps): New function. * sysdeps/generic/dl-procinfo.h (HWCAP_IMPORTANT): New definition. * sysdeps/unix/sysv/linux/i386/dl-procinfo.h (_dl_hwcap_string): New function. (HWCAP_IMPORTANT): New definition. 1998-03-30 17:26 H.J. Lu <hjl@gnu.org> * elf/dl-open.c (_dl_open): Fix a typo. (_dl_global_scope_alloc): Make it static. * nss/getXXent_r.c (REENTRANT_GETNAME): Avoid endless loop.
-rw-r--r--ChangeLog18
-rw-r--r--elf/dl-open.c8
-rw-r--r--sysdeps/generic/dl-procinfo.h3
-rw-r--r--sysdeps/generic/dl-sysdep.c34
-rw-r--r--sysdeps/unix/sysv/linux/i386/dl-procinfo.h29
5 files changed, 77 insertions, 15 deletions
diff --git a/ChangeLog b/ChangeLog
index 6925f97..50302ac 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,19 @@
+1998-03-30 Ulrich Drepper <drepper@cygnus.com>
+
+ * sysdeps/generic/dl-sysdep.c (_dl_important_hwcaps): New
+ function.
+
+ * sysdeps/generic/dl-procinfo.h (HWCAP_IMPORTANT): New definition.
+
+ * sysdeps/unix/sysv/linux/i386/dl-procinfo.h (_dl_hwcap_string):
+ New function.
+ (HWCAP_IMPORTANT): New definition.
+
+1998-03-30 17:26 H.J. Lu <hjl@gnu.org>
+
+ * elf/dl-open.c (_dl_open): Fix a typo.
+ (_dl_global_scope_alloc): Make it static.
+
1998-03-30 17:20 Ulrich Drepper <drepper@cygnus.com>
* Makerules: Remove duplicate rules to handle stamp.oS.
@@ -158,6 +174,8 @@
* setjmp/tst-setjmp.c: Don't test __setjmp, test _setjmp instead.
+ * nss/getXXent_r.c (REENTRANT_GETNAME): Avoid endless loop.
+
1998-03-29 02:02 H.J. Lu <hjl@gnu.org>
* sysdeps/i386/i486/bits/string.h: Fix typos.
diff --git a/elf/dl-open.c b/elf/dl-open.c
index 4bec833..99fac81 100644
--- a/elf/dl-open.c
+++ b/elf/dl-open.c
@@ -37,7 +37,7 @@ extern char **__libc_argv;
extern char **__environ;
-size_t _dl_global_scope_alloc;
+static size_t _dl_global_scope_alloc;
/* During the program run we must not modify the global data of
@@ -121,7 +121,8 @@ _dl_open (const char *file, int mode)
{
/* This is the first dynamic object given global scope. */
_dl_global_scope_alloc = 8;
- _dl_global_scope = malloc (8 * sizeof (struct link_map *));
+ _dl_global_scope = malloc (_dl_global_scope_alloc
+ * sizeof (struct link_map *));
if (! _dl_global_scope)
{
_dl_global_scope = _dl_default_scope;
@@ -142,7 +143,8 @@ _dl_open (const char *file, int mode)
{
/* Must extend the list. */
struct link_map **new = realloc (_dl_global_scope,
- _dl_global_scope_alloc * 2);
+ _dl_global_scope_alloc * 2
+ * sizeof (struct link_map *));
if (! new)
goto nomem;
_dl_global_scope_end = new + (_dl_global_scope_end -
diff --git a/sysdeps/generic/dl-procinfo.h b/sysdeps/generic/dl-procinfo.h
index 801d4b6..4893619 100644
--- a/sysdeps/generic/dl-procinfo.h
+++ b/sysdeps/generic/dl-procinfo.h
@@ -24,4 +24,7 @@
/* We cannot provide a general printing function. */
#define _dl_procinfo(word) -1
+/* By default there is no important hardware capability. */
+#define HWCAP_IMPORTANT (0)
+
#endif /* dl-procinfo.h */
diff --git a/sysdeps/generic/dl-sysdep.c b/sysdeps/generic/dl-sysdep.c
index 8db0c78..7f5e321 100644
--- a/sysdeps/generic/dl-sysdep.c
+++ b/sysdeps/generic/dl-sysdep.c
@@ -45,6 +45,7 @@ int __libc_enable_secure;
int __libc_multiple_libcs; /* Defining this here avoids the inclusion
of init-first. */
static ElfW(auxv_t) *_dl_auxv;
+static unsigned long hwcap;
#ifndef DL_FIND_ARG_COMPONENTS
@@ -235,10 +236,10 @@ _dl_show_auxv (void)
_dl_sysdep_message ("AT_PLATFORM: ", av->a_un.a_ptr, "\n", NULL);
break;
case AT_HWCAP:
- if (_dl_procinfo (av->a_un.a_val) < 0)
+ hwcap = av->a_un.a_val;
+ if (_dl_procinfo (hwcap) < 0)
_dl_sysdep_message ("AT_HWCAP: ",
- _itoa_word (av->a_un.a_val, buf + sizeof buf - 1,
- 16, 0),
+ _itoa_word (hwcap, buf + sizeof buf - 1, 16, 0),
"\n", NULL);
break;
}
@@ -269,3 +270,30 @@ _dl_next_ld_env_entry (char ***position)
return result;
}
+
+/* Return an array of useful/necessary hardware capability names. */
+char **
+_dl_important_hwcaps (size_t *sz)
+{
+ /* Determine how many important bits are set. */
+ unsigned long int important = hwcap & HWCAP_IMPORTANT;
+ size_t cnt = 0;
+ size_t n;
+ char **result;
+
+ for (n = 0; (~((1UL << n) - 1) & important) != 0; ++n)
+ if ((important & (1UL << n)) != 0)
+ ++cnt;
+
+ *sz = 0;
+ if (cnt == 0)
+ return NULL;
+
+ result = (char **) malloc (cnt * sizeof (char *));
+ if (result != NULL)
+ for (n = 0; (~((1UL << n) - 1) & important) != 0; ++n)
+ if ((important & (1UL << n)) != 0)
+ result[*sz++] = _dl_hwcap_string (n);
+
+ return result;
+}
diff --git a/sysdeps/unix/sysv/linux/i386/dl-procinfo.h b/sysdeps/unix/sysv/linux/i386/dl-procinfo.h
index 48d5cd3..85baf74 100644
--- a/sysdeps/unix/sysv/linux/i386/dl-procinfo.h
+++ b/sysdeps/unix/sysv/linux/i386/dl-procinfo.h
@@ -21,19 +21,20 @@
#ifndef _DL_PROCINFO_H
#define _DL_PROCINFO_H 1
+static const char *x86_cap_flags[] =
+ {
+ "fpu", "vme", "de", "pse", "tsc", "msr", "pae", "mce",
+ "cx8", "apic", "10", "sep", "mtrr", "pge", "mca", "cmov",
+ "fcmov", "17", "18", "19", "20", "21", "22", "mmx",
+ "osfxsr", "25", "26", "27", "28", "29", "30", "amd3d"
+ };
+
static inline int
__attribute__ ((unused))
_dl_procinfo (int word)
{
/* This table should match the information from arch/i386/kernel/setup.c
in the kernel sources. */
- static const char *x86_cap_flags[] =
- {
- "fpu", "vme", "de", "pse", "tsc", "msr", "pae", "mce",
- "cx8", "apic", "10", "sep", "mtrr", "pge", "mca", "cmov",
- "fcmov", "17", "18", "19", "20", "21", "22", "mmx",
- "cxmmx", "25", "26", "27", "28", "29", "30", "amd3d"
- };
int i;
_dl_sysdep_message ("AT_HWCAP: ", NULL);
@@ -47,6 +48,13 @@ _dl_procinfo (int word)
return 0;
}
+static inline const char *
+__attribute__ ((unused))
+_dl_hwcap_string (int idx)
+{
+ return x86_cap_flags[idx];
+};
+
enum
{
HWCAP_I386_FPU = 1 << 0,
@@ -66,8 +74,11 @@ enum
HWCAP_I386_CMOV = 1 << 15,
HWCAP_I386_FCMOV = 1 << 16,
HWCAP_I386_MMX = 1 << 23,
- HWCAP_I386_CXMMX = 1 << 24,
- HWCAP_I386_AMD3D = 1 << 31
+ HWCAP_I386_OSFXSR = 1 << 24,
+ HWCAP_I386_AMD3D = 1 << 31,
+
+ /* XXX Which others to add here? */
+ HWCAP_IMPORTANT = (HWCAP_I386_MMX)
};
#endif /* dl-procinfo.h */