Changeset e515167d in mainline for arch/amd64/src/cpu/cpu.c

Timestamp:

2005-09-03T09:52:47Z (19 years ago)

Author:

Ondrej Palkovsky <ondrap@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

be56c17

Parents:

5a5ed25

Message:

Added basic FPU context (not working).
Added CPU utilities from ia32
Fixed bug in vm.c that wanted PTL to be mapped in bottom memory.

File:

• arch/amd64/src/cpu/cpu.c (modified) (3 diffs)

arch/amd64/src/cpu/cpu.c

@@ -63 +63 @@
 void set_TS_flag(void)
 {
-        asm
-        (
+        __asm__ volatile (
                 "mov %%cr0,%%rax;"
                 "or $8,%%rax;"
@@ -71 +70 @@
                 :
                 :"%rax"
-        );
+                );
 }
 
 void reset_TS_flag(void)
 {
-        asm
-        (
+        __asm__ volatile (
                 "mov %%cr0,%%rax;"
                 "btc $4,%%rax;"
@@ -84 +82 @@
                 :
                 :"%rax"
-        );      
+                );      
 }
+
+void cpu_arch_init(void)
+{
+        CPU->arch.tss = tss_p;
+        CPU->fpu_owner=NULL;
+}
+
+
+void cpu_identify(void)
+{
+        cpu_info_t info;
+        int i;
+
+        CPU->arch.vendor = VendorUnknown;
+        if (has_cpuid()) {
+                cpuid(0, &info);
+
+                /*
+                 * Check for AMD processor.
+                 */
+                if (info.cpuid_ebx==AMD_CPUID_EBX && info.cpuid_ecx==AMD_CPUID_ECX && info.cpuid_edx==AMD_CPUID_EDX) {
+                        CPU->arch.vendor = VendorAMD;
+                }
+
+                /*
+                 * Check for Intel processor.
+                 */             
+                if (info.cpuid_ebx==INTEL_CPUID_EBX && info.cpuid_ecx==INTEL_CPUID_ECX && info.cpuid_edx==INTEL_CPUID_EDX) {
+                        CPU->arch.vendor = VendorIntel;
+                }
+                                
+                cpuid(1, &info);
+                CPU->arch.family = (info.cpuid_eax>>8)&0xf;
+                CPU->arch.model = (info.cpuid_eax>>4)&0xf;
+                CPU->arch.stepping = (info.cpuid_eax>>0)&0xf;                                           
+        }
+}
+
+void cpu_print_report(cpu_t* m)
+{
+        printf("cpu%d: (%s family=%d model=%d stepping=%d) %dMHz\n",
+                m->id, vendor_str[m->arch.vendor], m->arch.family, m->arch.model, m->arch.stepping,
+                m->frequency_mhz);
+}