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powerpc: Move cache geometry information to ld diagnostics

Browse Source 
From LD_SHOW_AUXV output.

Checked on powerpc64le-linux-gnu.

Reviewed-by: Peter Bergner <bergner@linux.ibm.com>
This commit is contained in:
Adhemerval Zanella
2025-02-26 16:28:41 +00:00
parent 8a995670a8
commit a768993c10
2 changed files with 50 additions and 66 deletions
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49
sysdeps/powerpc/dl-diagnostics-cpu.c
View File

@@ -38,6 +38,38 @@ print_hwcap_value (const char *label, int hwcap, unsigned long int value)
_dl_printf ("\"\n"); _dl_printf ("\"\n");
} }
static void
print_cache_geometry_value (const char *label, unsigned long int geometry)
{
unsigned long int assocty, line;
_dl_printf ("powerpc.cpu_features.%s=\"", label);
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);
}
_dl_printf ("\"\n");
}
void void
_dl_diagnostics_cpu (void) _dl_diagnostics_cpu (void)
{ {
@@ -45,4 +77,21 @@ _dl_diagnostics_cpu (void)
print_hwcap_value ("hwcap2", AT_HWCAP2, GLRO(dl_hwcap2)); print_hwcap_value ("hwcap2", AT_HWCAP2, GLRO(dl_hwcap2));
print_hwcap_value ("hwcap3", AT_HWCAP3, GLRO(dl_hwcap3)); print_hwcap_value ("hwcap3", AT_HWCAP3, GLRO(dl_hwcap3));
print_hwcap_value ("hwcap4", AT_HWCAP4, GLRO(dl_hwcap4)); print_hwcap_value ("hwcap4", AT_HWCAP4, GLRO(dl_hwcap4));
for (ElfW(auxv_t) *av = GLRO(dl_auxv); av->a_type != AT_NULL; ++av)
switch (av->a_type)
{
case AT_L1I_CACHEGEOMETRY:
print_cache_geometry_value ("l1i_cachegeometry", av->a_un.a_val);
break;
case AT_L1D_CACHEGEOMETRY:
print_cache_geometry_value ("l1d_cachegeometry", av->a_un.a_val);
break;
case AT_L2_CACHEGEOMETRY:
print_cache_geometry_value ("l2_cachegeometry", av->a_un.a_val);
break;
case AT_L3_CACHEGEOMETRY:
print_cache_geometry_value ("l3_cachegeometry", av->a_un.a_val);
break;
}
} }

67
sysdeps/powerpc/dl-procinfo.h
View File

@@ -124,71 +124,6 @@ _dl_string_platform (const char *str)
return -1; return -1;
} }
#if IS_IN (rtld) #define _dl_procinfo(type, word) -1
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)
{
switch(type)
{
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:
/* Fallback to generic output mechanism. */
return -1;
}
_dl_printf ("\n");
return 0;
}
#endif
#endif /* dl-procinfo.h */ #endif /* dl-procinfo.h */