X-Git-Url: http://v3vee.org/palacios/gitweb/gitweb.cgi?p=palacios.git;a=blobdiff_plain;f=bios%2Fvmxassist%2Futil.c;fp=bios%2Fvmxassist%2Futil.c;h=0181fe702c1399afe07bd9808954c5dd6777111c;hp=0000000000000000000000000000000000000000;hb=d34450b1e6fe3c2e1295c268c1722c669ba8d545;hpb=1a24d4e8fb3918a42b124777db5b41940150023e

diff --git a/bios/vmxassist/util.c b/bios/vmxassist/util.c
new file mode 100644
index 0000000..0181fe7
--- /dev/null
+++ b/bios/vmxassist/util.c
@@ -0,0 +1,406 @@
+/*
+ * util.c: Commonly used utility functions.
+ *
+ * Leendert van Doorn, leendert@watson.ibm.com
+ * Copyright (c) 2005, International Business Machines Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
+ * Place - Suite 330, Boston, MA 02111-1307 USA.
+ */
+#include <stdarg.h>
+
+#include "util.h"
+#include "machine.h"
+
+#define	isdigit(c)	((c) >= '0' && (c) <= '9')
+#define	min(a, b)	((a) < (b) ? (a) : (b))
+
+static void putchar(int);
+static char *printnum(char *, unsigned long, int);
+static void _doprint(void (*)(int), char const *, va_list);
+
+
+void
+dump_regs(struct regs *regs)
+{
+	printf("eax    %8x ecx    %8x edx    %8x ebx    %8x\n",
+		regs->eax, regs->ecx, regs->edx, regs->ebx);
+	printf("esp    %8x ebp    %8x esi    %8x edi    %8x\n",
+		regs->esp, regs->ebp, regs->esi, regs->edi);
+	printf("eip    %8x eflags %8x cs     %8x ds     %8x\n",
+		regs->eip, regs->eflags, regs->cs, regs->ds);
+	printf("es     %8x fs     %8x uss    %8x uesp   %8x\n",
+		regs->es, regs->fs, regs->uss, regs->uesp);
+	printf("ves    %8x vds    %8x vfs    %8x vgs    %8x\n",
+		regs->ves, regs->vds, regs->vfs, regs->vgs);
+	if (regs->trapno != -1 || regs->errno != -1)
+		printf("trapno %8x errno  %8x\n", regs->trapno, regs->errno);
+
+	printf("cr0    %8lx cr2    %8x cr3    %8lx cr4    %8lx\n",
+		(long)oldctx.cr0, get_cr2(),
+		(long)oldctx.cr3, (long)oldctx.cr4);
+}
+
+#ifdef DEBUG
+void
+hexdump(unsigned char *data, int sz)
+{
+	unsigned char *d;
+	int i;
+
+	for (d = data; sz > 0; d += 16, sz -= 16) {
+		int n = sz > 16 ? 16 : sz;
+
+		printf("%08x: ", (unsigned)d);
+		for (i = 0; i < n; i++)
+			printf("%02x%c", d[i], i == 7 ? '-' : ' ');
+		for (; i < 16; i++)
+			printf("  %c", i == 7 ? '-' : ' ');
+		printf("   ");
+		for (i = 0; i < n; i++)
+			printf("%c", d[i] >= ' ' && d[i] <= '~' ? d[i] : '.');
+		printf("\n");
+	}
+}
+
+void
+print_e820_map(struct e820entry *map, int entries)
+{
+	struct e820entry *m;
+
+	if (entries > 32)
+		entries = 32;
+
+	for (m = map; m < &map[entries]; m++) {
+		printf("%08lx%08lx - %08lx%08lx ",
+			(unsigned long) (m->addr >> 32),
+			(unsigned long) (m->addr),
+			(unsigned long) ((m->addr+m->size) >> 32),
+			(unsigned long) ((m->addr+m->size)));
+
+		switch (m->type) {
+		case E820_RAM:
+			printf("(RAM)\n"); break;
+		case E820_RESERVED:
+			printf("(Reserved)\n"); break;
+		case E820_ACPI:
+			printf("(ACPI Data)\n"); break;
+		case E820_NVS:
+			printf("(ACPI NVS)\n"); break;
+		default:
+			printf("(Type %ld)\n", m->type); break;
+		}
+	}
+}
+
+void
+dump_dtr(unsigned long addr, unsigned long size)
+{
+	unsigned long long entry;
+	unsigned long base, limit;
+	int i;
+
+	for (i = 0; i < size; i += 8) {
+		entry = ((unsigned long long *) addr)[i >> 3];
+		base = (((entry >> (56-24)) & 0xFF000000) |
+			((entry >> (32-16)) & 0x00FF0000) |
+			((entry >> (   16)) & 0x0000FFFF));
+		limit = (((entry >> (48-16)) & 0x000F0000) |
+		         ((entry           ) & 0x0000FFFF));
+		if (entry & (1ULL << (23+32))) /* G */
+			limit = (limit << 12) | 0xFFF;
+
+		printf("[0x%x] = 0x%08x%08x, base 0x%lx, limit 0x%lx\n", i,
+			(unsigned)(entry >> 32), (unsigned)(entry),
+			base, limit);
+	}
+}
+
+void
+dump_vmx_context(struct vmx_assist_context *c)
+{
+	printf("eip 0x%lx, esp 0x%lx, eflags 0x%lx\n",
+		(long) c->eip, (long) c->esp, (long) c->eflags);
+
+	printf("cr0 0x%lx, cr3 0x%lx, cr4 0x%lx\n",
+		(long)c->cr0, (long)c->cr3, (long)c->cr4);
+
+	printf("idtr: limit 0x%lx, base 0x%lx\n",
+		(long)c->idtr_limit, (long)c->idtr_base);
+
+	printf("gdtr: limit 0x%lx, base 0x%lx\n",
+		(long)c->gdtr_limit, (long)c->gdtr_base);
+
+	printf("cs: sel 0x%lx, limit 0x%lx, base 0x%lx\n",
+		(long)c->cs_sel, (long)c->cs_limit, (long)c->cs_base);
+	printf("\ttype %d, s %d, dpl %d, p %d, avl %d, ops %d, g %d, nul %d\n",
+		c->cs_arbytes.fields.seg_type,
+		c->cs_arbytes.fields.s,
+		c->cs_arbytes.fields.dpl,
+		c->cs_arbytes.fields.p,
+		c->cs_arbytes.fields.avl,
+		c->cs_arbytes.fields.default_ops_size,
+		c->cs_arbytes.fields.g,
+		c->cs_arbytes.fields.null_bit);
+
+	printf("ds: sel 0x%lx, limit 0x%lx, base 0x%lx\n",
+		(long)c->ds_sel, (long)c->ds_limit, (long)c->ds_base);
+	printf("\ttype %d, s %d, dpl %d, p %d, avl %d, ops %d, g %d, nul %d\n",
+		c->ds_arbytes.fields.seg_type,
+		c->ds_arbytes.fields.s,
+		c->ds_arbytes.fields.dpl,
+		c->ds_arbytes.fields.p,
+		c->ds_arbytes.fields.avl,
+		c->ds_arbytes.fields.default_ops_size,
+		c->ds_arbytes.fields.g,
+		c->ds_arbytes.fields.null_bit);
+
+	printf("es: sel 0x%lx, limit 0x%lx, base 0x%lx\n",
+		(long)c->es_sel, (long)c->es_limit, (long)c->es_base);
+	printf("\ttype %d, s %d, dpl %d, p %d, avl %d, ops %d, g %d, nul %d\n",
+		c->es_arbytes.fields.seg_type,
+		c->es_arbytes.fields.s,
+		c->es_arbytes.fields.dpl,
+		c->es_arbytes.fields.p,
+		c->es_arbytes.fields.avl,
+		c->es_arbytes.fields.default_ops_size,
+		c->es_arbytes.fields.g,
+		c->es_arbytes.fields.null_bit);
+
+	printf("ss: sel 0x%lx, limit 0x%lx, base 0x%lx\n",
+		(long)c->ss_sel, (long)c->ss_limit, (long)c->ss_base);
+	printf("\ttype %d, s %d, dpl %d, p %d, avl %d, ops %d, g %d, nul %d\n",
+		c->ss_arbytes.fields.seg_type,
+		c->ss_arbytes.fields.s,
+		c->ss_arbytes.fields.dpl,
+		c->ss_arbytes.fields.p,
+		c->ss_arbytes.fields.avl,
+		c->ss_arbytes.fields.default_ops_size,
+		c->ss_arbytes.fields.g,
+		c->ss_arbytes.fields.null_bit);
+
+	printf("fs: sel 0x%lx, limit 0x%lx, base 0x%lx\n",
+		(long)c->fs_sel, (long)c->fs_limit, (long)c->fs_base);
+	printf("\ttype %d, s %d, dpl %d, p %d, avl %d, ops %d, g %d, nul %d\n",
+		c->fs_arbytes.fields.seg_type,
+		c->fs_arbytes.fields.s,
+		c->fs_arbytes.fields.dpl,
+		c->fs_arbytes.fields.p,
+		c->fs_arbytes.fields.avl,
+		c->fs_arbytes.fields.default_ops_size,
+		c->fs_arbytes.fields.g,
+		c->fs_arbytes.fields.null_bit);
+
+	printf("gs: sel 0x%lx, limit 0x%lx, base 0x%lx\n",
+		(long)c->gs_sel, (long)c->gs_limit, (long)c->gs_base);
+	printf("\ttype %d, s %d, dpl %d, p %d, avl %d, ops %d, g %d, nul %d\n",
+		c->gs_arbytes.fields.seg_type,
+		c->gs_arbytes.fields.s,
+		c->gs_arbytes.fields.dpl,
+		c->gs_arbytes.fields.p,
+		c->gs_arbytes.fields.avl,
+		c->gs_arbytes.fields.default_ops_size,
+		c->gs_arbytes.fields.g,
+		c->gs_arbytes.fields.null_bit);
+
+	printf("tr: sel 0x%lx, limit 0x%lx, base 0x%lx\n",
+		(long)c->tr_sel, (long)c->tr_limit, (long)c->tr_base);
+	printf("\ttype %d, s %d, dpl %d, p %d, avl %d, ops %d, g %d, nul %d\n",
+		c->tr_arbytes.fields.seg_type,
+		c->tr_arbytes.fields.s,
+		c->tr_arbytes.fields.dpl,
+		c->tr_arbytes.fields.p,
+		c->tr_arbytes.fields.avl,
+		c->tr_arbytes.fields.default_ops_size,
+		c->tr_arbytes.fields.g,
+		c->tr_arbytes.fields.null_bit);
+
+	printf("ldtr: sel 0x%lx, limit 0x%lx, base 0x%lx\n",
+		(long)c->ldtr_sel, (long)c->ldtr_limit, (long)c->ldtr_base);
+	printf("\ttype %d, s %d, dpl %d, p %d, avl %d, ops %d, g %d, nul %d\n",
+		c->ldtr_arbytes.fields.seg_type,
+		c->ldtr_arbytes.fields.s,
+		c->ldtr_arbytes.fields.dpl,
+		c->ldtr_arbytes.fields.p,
+		c->ldtr_arbytes.fields.avl,
+		c->ldtr_arbytes.fields.default_ops_size,
+		c->ldtr_arbytes.fields.g,
+		c->ldtr_arbytes.fields.null_bit);
+
+	printf("GDTR <0x%lx,0x%lx>:\n",
+		(long)c->gdtr_base, (long)c->gdtr_limit);
+	dump_dtr(c->gdtr_base, c->gdtr_limit);
+}
+#endif /* DEBUG */
+
+/*
+ * Lightweight printf that doesn't drag in everything under the sun.
+ */
+int
+printf(const char *fmt, ...)
+{
+	va_list ap;
+
+	va_start(ap, fmt);
+	_doprint(putchar, fmt, ap);
+	va_end(ap);
+	return 0; /* for gcc compat */
+}
+
+int
+vprintf(const char *fmt, va_list ap)
+{
+	_doprint(putchar, fmt, ap);
+	return 0; /* for gcc compat */
+}
+
+void
+panic(const char *fmt, ...)
+{
+	va_list ap;
+
+	va_start(ap, fmt);
+	_doprint(putchar, fmt, ap);
+	putchar('\n');
+	va_end(ap);
+	halt();
+}
+
+unsigned
+strlen(const char *s)
+{
+	const char *q = s;
+
+	while (*s++)
+		/* void */;
+	return s - q - 1;
+}
+
+static void
+putchar(int ch)
+{
+	outb(0xE9, ch);
+}
+
+/*
+ * A stripped down version of doprint,
+ * but still powerful enough for most tasks.
+ */
+static void
+_doprint(void (*put)(int), char const *fmt, va_list ap)
+{
+	register char *str, c;
+	int lflag, zflag, nflag;
+	char buffer[17];
+	unsigned value;
+	int i, slen, pad;
+
+	for ( ; *fmt != '\0'; fmt++) {
+		pad = zflag = nflag = lflag = 0;
+		if (*fmt == '%') {
+			c = *++fmt;
+			if (c == '-' || isdigit(c)) {
+				if (c == '-') {
+					nflag = 1;
+					c = *++fmt;
+				}
+				zflag = c == '0';
+				for (pad = 0; isdigit(c); c = *++fmt)
+					pad = (pad * 10) + c - '0';
+			}
+			if (c == 'l') { /* long extension */
+				lflag = 1;
+				c = *++fmt;
+			}
+			if (c == 'd' || c == 'u' || c == 'o' || c == 'x') {
+				if (lflag)
+					value = va_arg(ap, unsigned);
+				else
+					value = (unsigned) va_arg(ap, unsigned int);
+				str = buffer;
+				printnum(str, value,
+					c == 'o' ? 8 : (c == 'x' ? 16 : 10));
+				goto printn;
+			} else if (c == 'O' || c == 'D' || c == 'X') {
+				value = va_arg(ap, unsigned);
+				str = buffer;
+				printnum(str, value,
+					c == 'O' ? 8 : (c == 'X' ? 16 : 10));
+			printn:
+				slen = strlen(str);
+				for (i = pad - slen; i > 0; i--)
+					put(zflag ? '0' : ' ');
+				while (*str) put(*str++);
+			} else if (c == 's') {
+				str = va_arg(ap, char *);
+				slen = strlen(str);
+				if (nflag == 0)
+					for (i = pad - slen; i > 0; i--) put(' ');
+				while (*str) put(*str++);
+				if (nflag)
+					for (i = pad - slen; i > 0; i--) put(' ');
+			} else if (c == 'c')
+				put(va_arg(ap, int));
+			else
+				put(*fmt);
+		} else
+			put(*fmt);
+	}
+}
+
+static char *
+printnum(char *p, unsigned long num, int base)
+{
+	unsigned long n;
+
+	if ((n = num/base) > 0)
+		p = printnum(p, n, base);
+	*p++ = "0123456789ABCDEF"[(int)(num % base)];
+	*p = '\0';
+	return p;
+}
+
+void *
+memset(void *s, int c, unsigned n)
+{
+        int t0, t1;
+
+        __asm__ __volatile__ ("cld; rep; stosb"
+                : "=&c" (t0), "=&D" (t1)
+                : "a" (c), "1" (s), "0" (n)
+                : "memory");
+        return s;
+}
+
+void *
+memcpy(void *dest, const void *src, unsigned n)
+{
+	int t0, t1, t2;
+
+	__asm__ __volatile__(
+		"cld\n"
+		"rep; movsl\n"
+		"testb $2,%b4\n"
+		"je 1f\n"
+		"movsw\n"
+		"1: testb $1,%b4\n"
+		"je 2f\n"
+		"movsb\n"
+		"2:"
+		: "=&c" (t0), "=&D" (t1), "=&S" (t2)
+		: "0" (n/4), "q" (n), "1" ((long) dest), "2" ((long) src)
+		: "memory"
+	);
+	return dest;
+}
+