aboutsummaryrefslogtreecommitdiff
path: root/sysdeps/powerpc/dl-procinfo.h
diff options
context:
space:
mode:
authorTulio Magno Quites Machado Filho <tuliom@linux.ibm.com>2018-12-19 19:03:12 -0200
committerTulio Magno Quites Machado Filho <tuliom@linux.ibm.com>2018-12-19 19:08:02 -0200
commit1616d034b61622836d3a36af53dcfca7624c844e (patch)
tree726bc44d1290e06f31f2ee84d813403176cc9fe3 /sysdeps/powerpc/dl-procinfo.h
parent61595e3d36ded374f97961503e843a314b0203c2 (diff)
downloadglibc-1616d034b61622836d3a36af53dcfca7624c844e.zip
glibc-1616d034b61622836d3a36af53dcfca7624c844e.tar.gz
glibc-1616d034b61622836d3a36af53dcfca7624c844e.tar.bz2
Print cache size and geometry auxv types on LD_SHOW_AUXV=1
Add support for AT_L1I_CACHESIZE, AT_L1I_CACHEGEOMETRY, AT_L1D_CACHESIZE, AT_L1D_CACHEGEOMETRY, AT_L2_CACHESIZE, AT_L2_CACHEGEOMETRY, AT_L3_CACHESIZE and AT_L3_CACHEGEOMETRY when LD_SHOW_AUXV=1. AT_L*_CACHESIZE is printed as decimal and represent the number of bytes of the cache. AT_L*_CACHEGEOMETRY is treated in order to specify the cache line size and its associativity. Example output from a POWER8: AT_L1I_CACHESIZE: 32768 AT_L1I_CACHEGEOMETRY: 128B line size, 8-way set associative AT_L1D_CACHESIZE: 65536 AT_L1D_CACHEGEOMETRY: 128B line size, 8-way set associative AT_L2_CACHESIZE: 524288 AT_L2_CACHEGEOMETRY: 128B line size, 8-way set associative AT_L3_CACHESIZE: 8388608 AT_L3_CACHEGEOMETRY: 128B line size, 8-way set associative Some of the new types are longer than the previous ones, requiring to increase the indentation in order to keep the values aligned. * elf/dl-sysdep.c (auxvars): Add AT_L1I_CACHESIZE, AT_L1I_CACHEGEOMETRY, AT_L1D_CACHESIZE, AT_L1D_CACHEGEOMETRY, AT_L2_CACHESIZE, AT_L2_CACHEGEOMETRY, AT_L3_CACHESIZE and AT_L3_CACHEGEOMETRY. Fix indentation when printing the other fields. (_dl_show_auxv): Give a special treatment to AT_L1I_CACHEGEOMETRY, AT_L1D_CACHEGEOMETRY, AT_L2_CACHEGEOMETRY and AT_L3_CACHEGEOMETRY. * sysdeps/powerpc/dl-procinfo.h (cache_geometry): New function. (_dl_procinfo): Fix indentation when printing AT_HWCAP and AT_HWCAP2. Add support for AT_L1I_CACHEGEOMETRY, AT_L1D_CACHEGEOMETRY, AT_L2_CACHEGEOMETRY and AT_L3_CACHEGEOMETRY. Signed-off-by: Tulio Magno Quites Machado Filho <tuliom@linux.ibm.com>
Diffstat (limited to 'sysdeps/powerpc/dl-procinfo.h')
-rw-r--r--sysdeps/powerpc/dl-procinfo.h55
1 files changed, 53 insertions, 2 deletions
diff --git a/sysdeps/powerpc/dl-procinfo.h b/sysdeps/powerpc/dl-procinfo.h
index 3803379..34bf80d 100644
--- a/sysdeps/powerpc/dl-procinfo.h
+++ b/sysdeps/powerpc/dl-procinfo.h
@@ -147,6 +147,37 @@ _dl_string_platform (const char *str)
}
#if IS_IN (rtld)
+static inline void
+cache_geometry (const char * name, unsigned long int geometry)
+{
+ unsigned long int assocty, line;
+
+ _dl_printf ("%s", name);
+
+ line = geometry & 0xffff;
+ assocty = (geometry >> 16) & 0xffff;
+
+ if (line == 0)
+ _dl_printf ("Unknown line size, ");
+ else
+ _dl_printf ("%luB line size, ", line);
+
+ switch (assocty)
+ {
+ case 0:
+ _dl_printf ("Unknown associativity");
+ break;
+ case 1:
+ _dl_printf ("Directly mapped");
+ break;
+ case 0xffff:
+ _dl_printf ("Fully associative");
+ break;
+ default:
+ _dl_printf ("%lu-way set associative", assocty);
+ }
+}
+
static inline int
__attribute__ ((unused))
_dl_procinfo (unsigned int type, unsigned long int word)
@@ -154,7 +185,7 @@ _dl_procinfo (unsigned int type, unsigned long int word)
switch(type)
{
case AT_HWCAP:
- _dl_printf ("AT_HWCAP: ");
+ _dl_printf ("AT_HWCAP: ");
for (int i = 0; i <= _DL_HWCAP_LAST; ++i)
if (word & (1 << i))
@@ -164,7 +195,7 @@ _dl_procinfo (unsigned int type, unsigned long int word)
{
unsigned int offset = _DL_HWCAP_LAST + 1;
- _dl_printf ("AT_HWCAP2: ");
+ _dl_printf ("AT_HWCAP2: ");
/* We have to go through them all because the kernel added the
AT_HWCAP2 features starting with the high bits. */
@@ -173,6 +204,26 @@ _dl_procinfo (unsigned int type, unsigned long int word)
_dl_printf (" %s", _dl_hwcap_string (offset + i));
break;
}
+ case AT_L1I_CACHEGEOMETRY:
+ {
+ cache_geometry ("AT_L1I_CACHEGEOMETRY: ", word);
+ break;
+ }
+ case AT_L1D_CACHEGEOMETRY:
+ {
+ cache_geometry ("AT_L1D_CACHEGEOMETRY: ", word);
+ break;
+ }
+ case AT_L2_CACHEGEOMETRY:
+ {
+ cache_geometry ("AT_L2_CACHEGEOMETRY: ", word);
+ break;
+ }
+ case AT_L3_CACHEGEOMETRY:
+ {
+ cache_geometry ("AT_L3_CACHEGEOMETRY: ", word);
+ break;
+ }
default:
/* This should not happen. */
return -1;