Intel CPU topology reworking.

This steals lots of code from the kernel, and munges it to work with userspace.
In doing so, I renamed a bunch of x86info's struct cpudata members to match
the kernels struct cpu_data, just to make it easier to sync any future changes.

1 files changed, 18 insertions, 0 deletions

diff --git a/cpuid.c b/cpuid.c
index a17699c..dccf7ee 100644
--- a/cpuid.c
+++ b/cpuid.c
@@ -195,3 +195,21 @@ void cpuid4(unsigned int CPU_number, unsigned long long idx,
 {
 	cpuid(CPU_number, 4 | (idx << 32), eax, ebx, ecx, edx);
 }
+
+/* Some CPUID calls want 'count' to be placed in ecx */
+void cpuid_count(struct cpudata *cpu, unsigned int op, int count,
+	unsigned int *eax, unsigned int *ebx,
+	unsigned int *ecx, unsigned int *edx)
+{
+	*ecx = count;
+	cpuid(cpu->number, op, eax, ebx, ecx, edx);
+}
+
+unsigned int cpuid_ebx(struct cpudata *cpu, unsigned int op)
+{
+	unsigned int eax, ebx, ecx, edx;
+
+	cpuid(cpu->number, op, &eax, &ebx, &ecx, &edx);
+
+	return ebx;
+}