aboutsummaryrefslogtreecommitdiffstats
path: root/erts/lib_src/common/ethr_aux.c
diff options
context:
space:
mode:
Diffstat (limited to 'erts/lib_src/common/ethr_aux.c')
-rw-r--r--erts/lib_src/common/ethr_aux.c47
1 files changed, 32 insertions, 15 deletions
diff --git a/erts/lib_src/common/ethr_aux.c b/erts/lib_src/common/ethr_aux.c
index 0cbb1b2fb8..3e7aad16c7 100644
--- a/erts/lib_src/common/ethr_aux.c
+++ b/erts/lib_src/common/ethr_aux.c
@@ -139,6 +139,38 @@ x86_init(void)
#endif
/* bit 26 of edx is set if we have sse2 */
ethr_runtime__.conf.have_sse2 = (edx & (1 << 26));
+
+ /* check if we have extended feature set */
+ eax = 0x80000000;
+ ethr_x86_cpuid__(&eax, &ebx, &ecx, &edx);
+
+ if (eax < 0x80000001)
+ return;
+
+ if (eax >= 0x80000007) {
+ /* Advanced Power Management Information */
+ eax = 0x80000007;
+ ethr_x86_cpuid__(&eax, &ebx, &ecx, &edx);
+
+ /* I got the values below from:
+ http://lxr.free-electrons.com/source/arch/x86/include/asm/cpufeature.h
+ They can be gotten from the intel/amd manual as well.
+ */
+
+ ethr_runtime__.conf.have_constant_tsc = (edx & (1 << 8));
+ ethr_runtime__.conf.have_tsc_reliable = (edx & (1 << 23));
+ ethr_runtime__.conf.have_nonstop_tsc = (edx & (1 << 24));
+ ethr_runtime__.conf.have_nonstop_tsc_s3 = (edx & (1 << 30));
+
+ }
+
+ /* Extended Processor Info and Feature Bits */
+ eax = 0x80000001;
+ ethr_x86_cpuid__(&eax, &ebx, &ecx, &edx);
+
+ /* bit 27 of edx is set if we have rdtscp */
+ ethr_runtime__.conf.have_rdtscp = (edx & (1 << 27));
+
}
#endif /* ETHR_X86_RUNTIME_CONF__ */
@@ -207,18 +239,7 @@ ethr_init_common__(ethr_init_data *id)
ethr_min_stack_size__ = ETHR_B2KW(ethr_min_stack_size__);
-#ifdef __OSE__
- /* For supervisor processes, OSE adds a number of bytes to the requested stack. With this
- * addition, the resulting size must not exceed the largest available stack size. The number
- * of bytes that will be added is configured in the monolith and can therefore not be
- * specified here. We simply assume that it is less than 0x1000. The available stack sizes
- * are configured in the .lmconf file and the largest one is usually 65536 bytes.
- * Consequently, the requested stack size is limited to 0xF000.
- */
- ethr_max_stack_size__ = 0xF000;
-#else
ethr_max_stack_size__ = 32*1024*1024;
-#endif
#if SIZEOF_VOID_P == 8
ethr_max_stack_size__ *= 2;
#endif
@@ -664,10 +685,6 @@ ETHR_IMPL_NORETURN__ ethr_fatal_error__(const char *file,
int ethr_assert_failed(const char *file, int line, const char *func, char *a)
{
fprintf(stderr, "%s:%d: %s(): Assertion failed: %s\n", file, line, func, a);
-#ifdef __OSE__
- ramlog_printf("%d: %s:%d: %s(): Assertion failed: %s\n",
- current_process(),file, line, func, a);
-#endif
ethr_abort__();
return 0;
}