1 files changed, 17 insertions, 0 deletions
diff --git a/contrib/syslinux-4.02/com32/lib/pci/bios.c b/contrib/syslinux-4.02/com32/lib/pci/bios.c
new file mode 100644
index 0000000..b3c2c57
--- /dev/null
+++ b/contrib/syslinux-4.02/com32/lib/pci/bios.c
@@ -0,0 +1,17 @@
+#include <com32.h>
+#include <string.h>
+#include "pci/pci.h"
+
+uint32_t __pci_read_write_bios(uint32_t call, uint32_t v, pciaddr_t a)
+{
+    com32sys_t rs;
+    memset(&rs, 0, sizeof rs);
+    rs.eax.w[0] = call;
+    rs.ebx.w[0] = a >> 8;	/* bus:device:function */
+    rs.edi.b[0] = a;		/* address:reg */
+    rs.ecx.l    = v;
+    rs.eflags.l = EFLAGS_CF;
+    __intcall(0x1a, &rs, &rs);
+
+    return (rs.eflags.l & EFLAGS_CF) ? ~(uint32_t) 0 : rs.ecx.l;
+}