Merge branch 'cpu-features'
Centralize all uses of CPUID to a cpu_feature class, which in theory can support optional features of non-x86/x64 as well using architecture specific code.
This commit is contained in:
commit
b17f0beda8
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@ -36,7 +36,7 @@ pen/pen.c plugins/plugin_loader.c plugins/plugin_feature.c processing/jobs/job.c
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processing/jobs/callback_job.c processing/processor.c processing/scheduler.c \
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processing/watcher.c resolver/resolver_manager.c resolver/rr_set.c \
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selectors/traffic_selector.c settings/settings.c settings/settings_types.c \
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settings/settings_parser.c settings/settings_lexer.c \
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settings/settings_parser.c settings/settings_lexer.c utils/cpu_feature.c \
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utils/utils.c utils/chunk.c utils/debug.c utils/enum.c utils/identification.c \
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utils/lexparser.c utils/optionsfrom.c utils/capabilities.c utils/backtrace.c \
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utils/parser_helper.c utils/test.c utils/process.c utils/utils/strerror.c
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@ -34,7 +34,7 @@ pen/pen.c plugins/plugin_loader.c plugins/plugin_feature.c processing/jobs/job.c
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processing/jobs/callback_job.c processing/processor.c processing/scheduler.c \
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processing/watcher.c resolver/resolver_manager.c resolver/rr_set.c \
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selectors/traffic_selector.c settings/settings.c settings/settings_types.c \
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settings/settings_parser.y settings/settings_lexer.l \
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settings/settings_parser.y settings/settings_lexer.l utils/cpu_feature.c \
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utils/utils.c utils/chunk.c utils/debug.c utils/enum.c utils/identification.c \
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utils/lexparser.c utils/optionsfrom.c utils/capabilities.c utils/backtrace.c \
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utils/parser_helper.c utils/test.c utils/process.c utils/utils/strerror.c
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@ -103,7 +103,7 @@ threading/mutex.h threading/condvar.h threading/spinlock.h threading/semaphore.h
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threading/rwlock.h threading/rwlock_condvar.h threading/lock_profiler.h \
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utils/utils.h utils/chunk.h utils/debug.h utils/enum.h utils/identification.h \
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utils/lexparser.h utils/optionsfrom.h utils/capabilities.h utils/backtrace.h \
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utils/leak_detective.h utils/printf_hook/printf_hook.h \
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utils/cpu_feature.h utils/leak_detective.h utils/printf_hook/printf_hook.h \
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utils/printf_hook/printf_hook_vstr.h utils/printf_hook/printf_hook_builtin.h \
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utils/parser_helper.h utils/test.h utils/integrity_checker.h utils/process.h \
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utils/utils/strerror.h utils/compat/windows.h utils/compat/apple.h
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@ -23,31 +23,12 @@
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#include <library.h>
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#include <plugins/plugin_feature.h>
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#include <utils/cpu_feature.h>
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#include <utils/debug.h>
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typedef struct private_padlock_plugin_t private_padlock_plugin_t;
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typedef enum padlock_feature_t padlock_feature_t;
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/**
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* Feature flags of padlock, received via cpuid()
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*/
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enum padlock_feature_t {
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PADLOCK_RESERVED_1 = (1<<0),
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PADLOCK_RESERVED_2 = (1<<1),
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PADLOCK_RNG_AVAILABLE = (1<<2),
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PADLOCK_RNG_ENABLED = (1<<3),
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PADLOCK_RESERVED_3 = (1<<4),
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PADLOCK_RESERVED_4 = (1<<5),
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PADLOCK_ACE_AVAILABLE = (1<<6),
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PADLOCK_ACE_ENABLED = (1<<7),
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PADLOCK_ACE2_AVAILABLE = (1<<8),
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PADLOCK_ACE2_ENABLED = (1<<9),
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PADLOCK_PHE_AVAILABLE = (1<<10),
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PADLOCK_PHE_ENABLED = (1<<11),
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PADLOCK_PMM_AVAILABLE = (1<<12),
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PADLOCK_PMM_ENABLED = (1<<13),
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};
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/**
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* private data of aes_plugin
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*/
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@ -61,48 +42,9 @@ struct private_padlock_plugin_t {
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/**
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* features supported by Padlock
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*/
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padlock_feature_t features;
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cpu_feature_t features;
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};
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/**
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* Get cpuid for info, return eax, ebx, ecx and edx. -fPIC requires to save ebx.
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*/
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#define cpuid(op, a, b, c, d)\
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asm (\
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"pushl %%ebx \n\t"\
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"cpuid \n\t"\
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"movl %%ebx, %1 \n\t"\
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"popl %%ebx \n\t"\
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: "=a" (a), "=r" (b), "=c" (c), "=d" (d) \
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: "a" (op));
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/**
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* Get features supported by Padlock
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*/
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static padlock_feature_t get_padlock_features()
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{
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char vendor[3 * sizeof(int) + 1];
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int a, b, c, d;
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cpuid(0, a, b, c, d);
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/* VendorID string is in b-d-c (yes, in this order) */
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snprintf(vendor, sizeof(vendor), "%.4s%.4s%.4s", &b, &d, &c);
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/* check if we have a VIA chip */
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if (streq(vendor, "CentaurHauls"))
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{
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cpuid(0xC0000000, a, b, c, d);
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/* check Centaur Extended Feature Flags */
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if (a >= 0xC0000001)
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{
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cpuid(0xC0000001, a, b, c, d);
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return d;
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}
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}
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DBG1(DBG_LIB, "Padlock not found, CPU is %s", vendor);
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return 0;
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}
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METHOD(plugin_t, get_name, char*,
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private_padlock_plugin_t *this)
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{
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@ -132,15 +74,15 @@ METHOD(plugin_t, get_features, int,
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if (!count)
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{ /* initialize only once */
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if (this->features & PADLOCK_RNG_ENABLED)
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if (this->features & CPU_FEATURE_PADLOCK_RNG_ENABLED)
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{
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plugin_features_add(f, f_rng, countof(f_rng), &count);
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}
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if (this->features & PADLOCK_ACE2_ENABLED)
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if (this->features & CPU_FEATURE_PADLOCK_ACE2_ENABLED)
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{
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plugin_features_add(f, f_aes, countof(f_aes), &count);
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}
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if (this->features & PADLOCK_PHE_ENABLED)
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if (this->features & CPU_FEATURE_PADLOCK_PHE_ENABLED)
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{
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plugin_features_add(f, f_sha1, countof(f_sha1), &count);
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}
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@ -170,25 +112,20 @@ plugin_t *padlock_plugin_create()
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.destroy = _destroy,
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},
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},
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.features = get_padlock_features(),
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.features = cpu_feature_get_all(),
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);
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if (!this->features)
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{
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free(this);
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return NULL;
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}
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DBG1(DBG_LIB, "Padlock found, supports:%s%s%s%s%s, enabled:%s%s%s%s%s",
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this->features & PADLOCK_RNG_AVAILABLE ? " RNG" : "",
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this->features & PADLOCK_ACE_AVAILABLE ? " ACE" : "",
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this->features & PADLOCK_ACE2_AVAILABLE ? " ACE2" : "",
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this->features & PADLOCK_PHE_AVAILABLE ? " PHE" : "",
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this->features & PADLOCK_PMM_AVAILABLE ? " PMM" : "",
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this->features & PADLOCK_RNG_ENABLED ? " RNG" : "",
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this->features & PADLOCK_ACE_ENABLED ? " ACE" : "",
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this->features & PADLOCK_ACE2_ENABLED ? " ACE2" : "",
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this->features & PADLOCK_PHE_ENABLED ? " PHE" : "",
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this->features & PADLOCK_PMM_ENABLED ? " PMM" : "");
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DBG1(DBG_LIB, "Padlock features supported:%s%s%s%s%s, enabled:%s%s%s%s%s",
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this->features & CPU_FEATURE_PADLOCK_RNG_AVAILABLE ? " RNG" : "",
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this->features & CPU_FEATURE_PADLOCK_ACE_AVAILABLE ? " ACE" : "",
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this->features & CPU_FEATURE_PADLOCK_ACE2_AVAILABLE ? " ACE2" : "",
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this->features & CPU_FEATURE_PADLOCK_PHE_AVAILABLE ? " PHE" : "",
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this->features & CPU_FEATURE_PADLOCK_PMM_AVAILABLE ? " PMM" : "",
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this->features & CPU_FEATURE_PADLOCK_RNG_ENABLED ? " RNG" : "",
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this->features & CPU_FEATURE_PADLOCK_ACE_ENABLED ? " ACE" : "",
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this->features & CPU_FEATURE_PADLOCK_ACE2_ENABLED ? " ACE2" : "",
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this->features & CPU_FEATURE_PADLOCK_PHE_ENABLED ? " PHE" : "",
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this->features & CPU_FEATURE_PADLOCK_PMM_ENABLED ? " PMM" : "");
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return &this->public.plugin;
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}
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@ -20,6 +20,7 @@
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#include <library.h>
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#include <utils/debug.h>
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#include <utils/cpu_feature.h>
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typedef struct private_rdrand_plugin_t private_rdrand_plugin_t;
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typedef enum cpuid_feature_t cpuid_feature_t;
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@ -35,56 +36,6 @@ struct private_rdrand_plugin_t {
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rdrand_plugin_t public;
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};
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/**
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* CPU feature flags, returned via cpuid(1)
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*/
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enum cpuid_feature_t {
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CPUID_RDRAND = (1<<30),
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};
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/**
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* Get cpuid for info, return eax, ebx, ecx and edx.
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* -fPIC requires to save ebx on IA-32.
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*/
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static void cpuid(u_int op, u_int *a, u_int *b, u_int *c, u_int *d)
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{
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#ifdef __x86_64__
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asm("cpuid" : "=a" (*a), "=b" (*b), "=c" (*c), "=d" (*d) : "a" (op));
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#else /* __i386__ */
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asm("pushl %%ebx;"
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"cpuid;"
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"movl %%ebx, %1;"
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"popl %%ebx;"
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: "=a" (*a), "=r" (*b), "=c" (*c), "=d" (*d) : "a" (op));
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#endif /* __x86_64__ / __i386__*/
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}
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/**
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* Check if we have RDRAND instruction
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*/
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static bool have_rdrand()
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{
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char vendor[3 * sizeof(u_int32_t) + 1];
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u_int a, b, c, d;
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cpuid(0, &a, &b, &c, &d);
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/* VendorID string is in b-d-c (yes, in this order) */
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snprintf(vendor, sizeof(vendor), "%.4s%.4s%.4s", &b, &d, &c);
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/* check if we have an Intel CPU */
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if (streq(vendor, "GenuineIntel"))
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{
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cpuid(1, &a, &b, &c, &d);
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if (c & CPUID_RDRAND)
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{
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DBG2(DBG_LIB, "detected RDRAND support on %s CPU", vendor);
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return TRUE;
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}
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}
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DBG2(DBG_LIB, "no RDRAND support on %s CPU, disabled", vendor);
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return FALSE;
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}
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METHOD(plugin_t, get_name, char*,
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private_rdrand_plugin_t *this)
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{
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@ -102,10 +53,12 @@ METHOD(plugin_t, get_features, int,
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PLUGIN_DEPENDS(CRYPTER, ENCR_AES_CBC, 16),
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};
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*features = f;
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if (have_rdrand())
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if (cpu_feature_available(CPU_FEATURE_RDRAND))
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{
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DBG2(DBG_LIB, "detected RDRAND support, enabled");
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return countof(f);
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}
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DBG2(DBG_LIB, "no RDRAND support detected, disabled");
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return 0;
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}
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|
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@ -0,0 +1,158 @@
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/*
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* Copyright (C) 2015 Martin Willi
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* Copyright (C) 2015 revosec AG
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*
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||||
* This program is free software; you can redistribute it and/or modify it
|
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* under the terms of the GNU General Public License as published by the
|
||||
* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
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*
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* This program is distributed in the hope that it will be useful, but
|
||||
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
|
||||
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
||||
* for more details.
|
||||
*/
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#include "cpu_feature.h"
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#if defined __i386__ || defined(__x86_64__)
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typedef enum {
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/* Generic CPUID(1) flags */
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CPUID1_EDX_MMX = (1 << 23),
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CPUID1_EDX_SSE = (1 << 25),
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CPUID1_EDX_SSE2 = (1 << 26),
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CPUID1_ECX_SSE3 = (1 << 0),
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CPUID1_ECX_PCLMULQDQ = (1 << 1),
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CPUID1_ECX_SSSE3 = (1 << 9),
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CPUID1_ECX_SSE41 = (1 << 19),
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CPUID1_ECX_SSE42 = (1 << 20),
|
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CPUID1_ECX_AESNI = (1 << 25),
|
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CPUID1_ECX_AVX = (1 << 28),
|
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CPUID1_ECX_RDRAND = (1 << 30),
|
||||
|
||||
/* For CentaurHauls cpuid(0xC0000001) */
|
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CPUIDC1_EDX_RNG_AVAILABLE = (1 << 2),
|
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CPUIDC1_EDX_RNG_ENABLED = (1 << 3),
|
||||
CPUIDC1_EDX_ACE_AVAILABLE = (1 << 6),
|
||||
CPUIDC1_EDX_ACE_ENABLED = (1 << 7),
|
||||
CPUIDC1_EDX_ACE2_AVAILABLE = (1 << 8),
|
||||
CPUIDC1_EDX_ACE2_ENABLED = (1 << 9),
|
||||
CPUIDC1_EDX_PHE_AVAILABLE = (1 << 10),
|
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CPUIDC1_EDX_PHE_ENABLED = (1 << 11),
|
||||
CPUIDC1_EDX_PMM_AVAILABLE = (1 << 12),
|
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CPUIDC1_EDX_PMM_ENABLED = (1 << 13),
|
||||
} cpuid_flag_t;
|
||||
|
||||
/**
|
||||
* Get cpuid for info, return eax, ebx, ecx and edx.
|
||||
* -fPIC requires to save ebx on IA-32.
|
||||
*/
|
||||
static void cpuid(u_int op, u_int *a, u_int *b, u_int *c, u_int *d)
|
||||
{
|
||||
#ifdef __x86_64__
|
||||
asm("cpuid" : "=a" (*a), "=b" (*b), "=c" (*c), "=d" (*d) : "a" (op));
|
||||
#else /* __i386__ */
|
||||
asm("pushl %%ebx;"
|
||||
"cpuid;"
|
||||
"movl %%ebx, %1;"
|
||||
"popl %%ebx;"
|
||||
: "=a" (*a), "=r" (*b), "=c" (*c), "=d" (*d) : "a" (op));
|
||||
#endif /* __x86_64__ / __i386__*/
|
||||
}
|
||||
|
||||
/**
|
||||
* Return feature if flag in reg, flag-to-feature
|
||||
*/
|
||||
static inline cpu_feature_t f2f(u_int reg, cpuid_flag_t flag, cpu_feature_t f)
|
||||
{
|
||||
if (reg & flag)
|
||||
{
|
||||
return f;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
/**
|
||||
* Get features for a Via "CentaurHauls" CPU
|
||||
*/
|
||||
static cpu_feature_t get_via_features()
|
||||
{
|
||||
cpu_feature_t f = 0;
|
||||
u_int a, b, c, d;
|
||||
|
||||
cpuid(0xc0000001, &a, &b, &c, &d);
|
||||
|
||||
f |= f2f(d, CPUIDC1_EDX_RNG_AVAILABLE, CPU_FEATURE_PADLOCK_RNG_AVAILABLE);
|
||||
f |= f2f(d, CPUIDC1_EDX_RNG_ENABLED, CPU_FEATURE_PADLOCK_RNG_ENABLED);
|
||||
f |= f2f(d, CPUIDC1_EDX_ACE_AVAILABLE, CPU_FEATURE_PADLOCK_ACE_AVAILABLE);
|
||||
f |= f2f(d, CPUIDC1_EDX_ACE_ENABLED, CPU_FEATURE_PADLOCK_ACE_ENABLED);
|
||||
f |= f2f(d, CPUIDC1_EDX_ACE2_AVAILABLE, CPU_FEATURE_PADLOCK_ACE2_AVAILABLE);
|
||||
f |= f2f(d, CPUIDC1_EDX_ACE2_ENABLED, CPU_FEATURE_PADLOCK_ACE2_ENABLED);
|
||||
f |= f2f(d, CPUIDC1_EDX_PHE_AVAILABLE, CPU_FEATURE_PADLOCK_PHE_AVAILABLE);
|
||||
f |= f2f(d, CPUIDC1_EDX_PHE_ENABLED, CPU_FEATURE_PADLOCK_PHE_ENABLED);
|
||||
f |= f2f(d, CPUIDC1_EDX_PMM_AVAILABLE, CPU_FEATURE_PADLOCK_PMM_AVAILABLE);
|
||||
f |= f2f(d, CPUIDC1_EDX_PMM_ENABLED, CPU_FEATURE_PADLOCK_PMM_ENABLED);
|
||||
|
||||
return f;
|
||||
}
|
||||
|
||||
/**
|
||||
* See header.
|
||||
*/
|
||||
cpu_feature_t cpu_feature_get_all()
|
||||
{
|
||||
char vendor[3 * sizeof(u_int32_t) + 1];
|
||||
cpu_feature_t f = 0;
|
||||
u_int a, b, c, d;
|
||||
|
||||
cpuid(0, &a, &b, &c, &d);
|
||||
/* VendorID string is in b-d-c (yes, in this order) */
|
||||
snprintf(vendor, sizeof(vendor), "%.4s%.4s%.4s", &b, &d, &c);
|
||||
|
||||
cpuid(1, &a, &b, &c, &d);
|
||||
|
||||
/* check common x86 features for CPUID(1) */
|
||||
f |= f2f(d, CPUID1_EDX_MMX, CPU_FEATURE_MMX);
|
||||
f |= f2f(d, CPUID1_EDX_SSE, CPU_FEATURE_SSE);
|
||||
f |= f2f(d, CPUID1_EDX_SSE2, CPU_FEATURE_SSE2);
|
||||
f |= f2f(c, CPUID1_ECX_SSE3, CPU_FEATURE_SSE3);
|
||||
f |= f2f(c, CPUID1_ECX_PCLMULQDQ, CPU_FEATURE_PCLMULQDQ);
|
||||
f |= f2f(c, CPUID1_ECX_SSSE3, CPU_FEATURE_SSSE3);
|
||||
f |= f2f(c, CPUID1_ECX_SSE41, CPU_FEATURE_SSE41);
|
||||
f |= f2f(c, CPUID1_ECX_SSE42, CPU_FEATURE_SSE42);
|
||||
f |= f2f(c, CPUID1_ECX_AESNI, CPU_FEATURE_AESNI);
|
||||
f |= f2f(c, CPUID1_ECX_AVX, CPU_FEATURE_AVX);
|
||||
f |= f2f(c, CPUID1_ECX_RDRAND, CPU_FEATURE_RDRAND);
|
||||
|
||||
if (streq(vendor, "CentaurHauls"))
|
||||
{
|
||||
cpuid(0xc0000000, &a, &b, &c, &d);
|
||||
/* check Centaur Extended Feature Flags */
|
||||
if (a >= 0xc0000001)
|
||||
{
|
||||
f |= get_via_features();
|
||||
}
|
||||
}
|
||||
return f;
|
||||
}
|
||||
|
||||
#else /* !x86 */
|
||||
|
||||
/**
|
||||
* See header.
|
||||
*/
|
||||
cpu_feature_t cpu_feature_get_all()
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
||||
#endif
|
||||
|
||||
/**
|
||||
* See header.
|
||||
*/
|
||||
bool cpu_feature_available(cpu_feature_t feature)
|
||||
{
|
||||
return (cpu_feature_get_all() & feature) == feature;
|
||||
}
|
|
@ -0,0 +1,62 @@
|
|||
/*
|
||||
* Copyright (C) 2015 Martin Willi
|
||||
* Copyright (C) 2015 revosec AG
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify it
|
||||
* under the terms of the GNU General Public License as published by the
|
||||
* Free Software Foundation; either version 2 of the License, or (at your
|
||||
* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful, but
|
||||
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
|
||||
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
||||
* for more details.
|
||||
*/
|
||||
|
||||
/**
|
||||
* @defgroup cpu_feature cpu_feature
|
||||
* @{ @ingroup utils
|
||||
*/
|
||||
|
||||
#ifndef CPU_FEATURE_H_
|
||||
#define CPU_FEATURE_H_
|
||||
|
||||
#include <library.h>
|
||||
|
||||
typedef enum {
|
||||
/** x86/x64 extensions */
|
||||
CPU_FEATURE_MMX = (1 << 0),
|
||||
CPU_FEATURE_SSE = (1 << 1),
|
||||
CPU_FEATURE_SSE2 = (1 << 2),
|
||||
CPU_FEATURE_SSE3 = (1 << 3),
|
||||
CPU_FEATURE_SSSE3 = (1 << 4),
|
||||
CPU_FEATURE_SSE41 = (1 << 5),
|
||||
CPU_FEATURE_SSE42 = (1 << 6),
|
||||
CPU_FEATURE_AVX = (1 << 7),
|
||||
CPU_FEATURE_RDRAND = (1 << 8),
|
||||
CPU_FEATURE_AESNI = (1 << 9),
|
||||
CPU_FEATURE_PCLMULQDQ = (1 << 10),
|
||||
/** Via Padlock Security features */
|
||||
CPU_FEATURE_PADLOCK_RNG_AVAILABLE = (1 << 22),
|
||||
CPU_FEATURE_PADLOCK_RNG_ENABLED = (1 << 23),
|
||||
CPU_FEATURE_PADLOCK_ACE_AVAILABLE = (1 << 24),
|
||||
CPU_FEATURE_PADLOCK_ACE_ENABLED = (1 << 25),
|
||||
CPU_FEATURE_PADLOCK_ACE2_AVAILABLE = (1 << 26),
|
||||
CPU_FEATURE_PADLOCK_ACE2_ENABLED = (1 << 27),
|
||||
CPU_FEATURE_PADLOCK_PHE_AVAILABLE = (1 << 28),
|
||||
CPU_FEATURE_PADLOCK_PHE_ENABLED = (1 << 29),
|
||||
CPU_FEATURE_PADLOCK_PMM_AVAILABLE = (1 << 30),
|
||||
CPU_FEATURE_PADLOCK_PMM_ENABLED = (1 << 31),
|
||||
} cpu_feature_t;
|
||||
|
||||
/**
|
||||
* Get a bitmask for all supported CPU features
|
||||
*/
|
||||
cpu_feature_t cpu_feature_get_all();
|
||||
|
||||
/**
|
||||
* Check if a given set of CPU features is available.
|
||||
*/
|
||||
bool cpu_feature_available(cpu_feature_t feature);
|
||||
|
||||
#endif /** CPU_FEATURE_H_ @}*/
|
Loading…
Reference in New Issue