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authorEric Biederman <ebiederm@xmission.com>2003-07-12 01:37:33 +0000
committerEric Biederman <ebiederm@xmission.com>2003-07-12 01:37:33 +0000
commitb3e9b4a534dd83be87d01bba0ce4fdb0bcc82bfd (patch)
tree41fac586634cd663c79acd8b6ebf7f497503ad8f /src
parent91b5ed107369bb0f65028ccc973183bf0dcb8ae7 (diff)
downloadcoreboot-b3e9b4a534dd83be87d01bba0ce4fdb0bcc82bfd.tar.xz
- Implement division and rdtsc support for romcc
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@947 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Diffstat (limited to 'src')
-rw-r--r--src/arch/i386/include/arch/romcc_io.h46
1 files changed, 46 insertions, 0 deletions
diff --git a/src/arch/i386/include/arch/romcc_io.h b/src/arch/i386/include/arch/romcc_io.h
index d67b3b60d6..f460a36f4d 100644
--- a/src/arch/i386/include/arch/romcc_io.h
+++ b/src/arch/i386/include/arch/romcc_io.h
@@ -35,6 +35,33 @@ static void hlt(void)
__builtin_hlt();
}
+typedef __builtin_div_t div_t;
+typedef __builtin_ldiv_t ldiv_t;
+typedef __builtin_udiv_t udiv_t;
+typedef __builtin_uldiv_t uldiv_t;
+
+static div_t div(int numer, int denom)
+{
+ return __builtin_div(numer, denom);
+}
+
+static ldiv_t ldiv(long numer, long denom)
+{
+ return __builtin_ldiv(numer, denom);
+}
+
+static udiv_t udiv(unsigned numer, unsigned denom)
+{
+ return __builtin_udiv(numer, denom);
+}
+
+static uldiv_t uldiv(unsigned long numer, unsigned long denom)
+{
+ return __builtin_uldiv(numer, denom);
+}
+
+
+
int log2(int value)
{
/* __builtin_bsr is a exactly equivalent to the x86 machine
@@ -59,6 +86,25 @@ static void wrmsr(unsigned long index, msr_t msr)
__builtin_wrmsr(index, msr.lo, msr.hi);
}
+
+struct tsc_struct {
+ unsigned lo;
+ unsigned hi;
+};
+typedef struct tsc_struct tsc_t;
+
+static tsc_t rdtsc(void)
+{
+ tsc_t res;
+ asm ("rdtsc"
+ : "=a" (res.lo), "=d"(res.hi) /* outputs */
+ : /* inputs */
+ : /* Clobbers */
+ );
+ return res;
+}
+
+
#define PCI_ADDR(BUS, DEV, FN, WHERE) ( \
(((BUS) & 0xFF) << 16) | \
(((DEV) & 0x1f) << 11) | \