systemsoftware
/
ELFv2-ABI
35
1
Fork 0
Code Issues 10 Pull Requests Projects Releases Wiki Activity

Fix issue #57, Add new aux vector entries for cache size and shape.

Browse Source 
Signed-off-by: Bill Schmidt <wschmidt@linux.vnet.ibm.com>
master
Bill Schmidt 8 years ago
parent 6016d667a6
commit 80ab5a4157
1 changed files with 67 additions and 33 deletions
Show Stats Download Patch File Download Diff File

100
specification/ch_4.xml
Unescape Escape View File

@ -565,42 +565,51 @@ int main(int argc, char *argv[ ], char *envp[ ], ElfW(auxv_t) *auxvec)</programl
} a_un;
} auxv_t;
Name Value a_un field Comment
AT_NULL 0 ignored /* End of vector */
AT_PHDR 3 a_ptr /* Program headers for program */
AT_PHENT 4 a_val /* Size of program header entry */
AT_PHNUM 5 a_val /* Number of program headers */
AT_PAGESZ 6 a_val /* System page size */
AT_BASE 7 a_ptr /* Base address of interpreter */
AT_FLAGS 8 a_val /* Flags */
AT_ENTRY 9 a_ptr /* Entry point of program */
AT_UID 11 /* Real user ID (uid) */
AT_EUID 12 /* Effective user ID (euid) */
AT_GID 13 /* Real group ID (gid) */
AT_EGID 14 /* Effective group ID (egid) */
AT_PLATFORM 15 a_ptr /* String identifying platform. */
AT_HWCAP 16 a_val /* Machine-dependent hints about
Name Value a_un field Comment
AT_NULL 0 ignored /* End of vector */
AT_PHDR 3 a_ptr /* Program headers for program */
AT_PHENT 4 a_val /* Size of program header entry */
AT_PHNUM 5 a_val /* Number of program headers */
AT_PAGESZ 6 a_val /* System page size */
AT_BASE 7 a_ptr /* Base address of interpreter */
AT_FLAGS 8 a_val /* Flags */
AT_ENTRY 9 a_ptr /* Entry point of program */
AT_UID 11 /* Real user ID (uid) */
AT_EUID 12 /* Effective user ID (euid) */
AT_GID 13 /* Real group ID (gid) */
AT_EGID 14 /* Effective group ID (egid) */
AT_PLATFORM 15 a_ptr /* String identifying platform. */
AT_HWCAP 16 a_val /* Machine-dependent hints about
processor capabilities. */
AT_CLKTCK 17 /* Frequency of times( ), always 100 */
AT_DCACHEBSIZE 19 a_val /* Data cache block size */
AT_ICACHEBSIZE 20 a_val /* Instruction cache block size */
AT_UCACHEBSIZE 21 a_val /* Unified cache block size */
AT_IGNOREPPC 22 /* Ignore this entry! */
AT_SECURE 23 /* Boolean, was exec authorized to use
AT_CLKTCK 17 /* Frequency of times( ), always 100 */
AT_DCACHEBSIZE 19 a_val /* Data cache block size */
AT_ICACHEBSIZE 20 a_val /* Instruction cache block size */
AT_UCACHEBSIZE 21 a_val /* Unified cache block size */
AT_IGNOREPPC 22 /* Ignore this entry! */
AT_SECURE 23 /* Boolean, was exec authorized to use
setuid or setgid */
AT_BASE_PLATFORM 24 a_ptr /* String identifying real platforms */
AT_RANDOM 25 /* Address of 16 random bytes */
AT_HWCAP2 26 a_val /* More machine-dependent hints about
AT_BASE_PLATFORM 24 a_ptr /* String identifying real platforms */
AT_RANDOM 25 /* Address of 16 random bytes */
AT_HWCAP2 26 a_val /* More machine-dependent hints about
processor capabilities. */
AT_EXECFN 31 /* File name of executable */
AT_SYSINFO_EHDR 33 /* In many architectures, the kernel
provides a virtual dynamic shared
object (VDSO) that contains a function
callable from the user state.
AT_SYSINFO_EHDR is the address of the
VDSO header that is used by the
dynamic linker to resolve function
symbols with the VDSO. */</programlisting>
AT_EXECFN 31 /* File name of executable */
AT_SYSINFO_EHDR 33 /* In many architectures, the kernel
provides a virtual dynamic shared
object (VDSO) that contains a function
callable from the user state.
AT_SYSINFO_EHDR is the address of the
VDSO header that is used by the
dynamic linker to resolve function
symbols with the VDSO. */
AT_L1I_CACHESIZE 40 /* Cache sizes and geometries. */
AT_L1I_CACHEGEOMETRY 41
AT_L1D_CACHESIZE 42
AT_L1D_CACHEGEOMETRY 43
AT_L2_CACHESIZE 44
AT_L2_CACHEGEOMETRY 45
AT_L3_CACHESIZE 46
AT_L3_CACHEGEOMETRY 47
</programlisting>
<para>AT_NULL</para>
<para>The auxiliary vector has no fixed length; instead an entry of this
type denotes the end of the vector. The corresponding value of a_un is
@ -710,6 +719,31 @@ PPC_FEATURE2_HAS_IEEE128 0x00400000 /* VSX IEEE Binary Float 128-bit */</progra
defined or predictable order. Further, the system may allocate memory
after the null auxiliary vector entry and before the beginning of the
information block.</para>
<para>AT_L1I_CACHESIZE</para>
<para>The size of the level-1 instruction cache, in bytes.</para>
<para>AT_L1I_CACHEGEOMETRY</para>
<para>The geometry of the level-1 instruction cache. The low-order
sixteen bits contain the cache associativity as a value N, where
N = 1 represents a direct-mapped cache, N = 0xffff represents a
fully associative cache, and any other N represents an N-way
set-associative cache. The next higher-order sixteen bits contain
the size of the cache line in bytes. Note that the cache line
size is not necessarily the same as the cache block size.</para>
<para>AT_L1D_CACHESIZE</para>
<para>The size of the level-1 data cache, in bytes.</para>
<para>AT_L1D_CACHEGEOMETRY</para>
<para>The geometry of the level-1 data cache, defined in the same
manner as for AT_L1I_CACHEGEOMETRY.</para>
<para>AT_L2_CACHESIZE</para>
<para>The size of the level-2 cache, in bytes.</para>
<para>AT_L2_CACHEGEOMETRY</para>
<para>The geometry of the level-2 cache, defined in the same
manner as for AT_L1I_CACHEGEOMETRY.</para>
<para>AT_L3_CACHESIZE</para>
<para>The size of the level-3 cache, in bytes.</para>
<para>AT_L3_CACHEGEOMETRY</para>
<para>The geometry of the level-3 cache, defined in the same
manner as for AT_L1I_CACHEGEOMETRY.</para>
</section>
</section>
</section>

Write Preview
Loading…
Cancel
Save