sync code with last improvements from OpenBSD

xserver/hw/xfree86/int10/xf86x86emu.c

@@ -0,0 +1,90 @@
+/*
+ *                   XFree86 int10 module
+ *   execute BIOS int 10h calls in x86 real mode environment
+ *                 Copyright 1999 Egbert Eich
+ */
+#ifdef HAVE_XORG_CONFIG_H
+#include <xorg-config.h>
+#endif
+
+#include "xf86.h"
+#include "xf86_OSproc.h"
+#include "xf86Pci.h"
+#define _INT10_PRIVATE
+#include "xf86int10.h"
+#include "int10Defines.h"
+#include <x86emu.h>
+
+#define M _X86EMU_env
+
+static void
+x86emu_do_int(int num)
+{
+    Int10Current->num = num;
+
+    if (!int_handler(Int10Current)) {
+        X86EMU_halt_sys();
+    }
+}
+
+void
+xf86ExecX86int10(xf86Int10InfoPtr pInt)
+{
+    int sig = setup_int(pInt);
+
+    if (sig < 0)
+        return;
+
+    if (int_handler(pInt)) {
+        X86EMU_exec();
+    }
+
+    finish_int(pInt, sig);
+}
+
+Bool
+xf86Int10ExecSetup(xf86Int10InfoPtr pInt)
+{
+    int i;
+    X86EMU_intrFuncs intFuncs[256];
+
+    X86EMU_pioFuncs pioFuncs = {
+        .inb = x_inb,
+        .inw = x_inw,
+        .inl = x_inl,
+        .outb = x_outb,
+        .outw = x_outw,
+        .outl = x_outl
+    };
+
+    X86EMU_memFuncs memFuncs = {
+        (&Mem_rb),
+        (&Mem_rw),
+        (&Mem_rl),
+        (&Mem_wb),
+        (&Mem_ww),
+        (&Mem_wl)
+    };
+
+    X86EMU_setupMemFuncs(&memFuncs);
+
+    pInt->cpuRegs = &M;
+    M.mem_base = 0;
+    M.mem_size = 1024 * 1024 + 1024;
+    X86EMU_setupPioFuncs(&pioFuncs);
+
+    for (i = 0; i < 256; i++)
+        intFuncs[i] = x86emu_do_int;
+    X86EMU_setupIntrFuncs(intFuncs);
+    return TRUE;
+}
+
+void
+printk(const char *fmt, ...)
+{
+    va_list argptr;
+
+    va_start(argptr, fmt);
+    VErrorF(fmt, argptr);
+    va_end(argptr);
+}