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-rw-r--r--grub-core/boot/decompressor/minilib.c102
1 files changed, 102 insertions, 0 deletions
diff --git a/grub-core/boot/decompressor/minilib.c b/grub-core/boot/decompressor/minilib.c
new file mode 100644
index 0000000..f2a2ef7
--- /dev/null
+++ b/grub-core/boot/decompressor/minilib.c
@@ -0,0 +1,102 @@
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 2010 Free Software Foundation, Inc.
+ *
+ * GRUB is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GRUB is distributed in the hope that 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 GRUB. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <grub/types.h>
+#include <grub/misc.h>
+#include <grub/decompressor.h>
+
+void *
+memset (void *s, int c, grub_size_t len)
+{
+ grub_uint8_t *ptr;
+ for (ptr = s; len; ptr++, len--)
+ *ptr = c;
+ return s;
+}
+
+void *
+grub_memmove (void *dest, const void *src, grub_size_t n)
+{
+ char *d = (char *) dest;
+ const char *s = (const char *) src;
+
+ if (d < s)
+ while (n--)
+ *d++ = *s++;
+ else
+ {
+ d += n;
+ s += n;
+
+ while (n--)
+ *--d = *--s;
+ }
+
+ return dest;
+}
+
+int
+grub_memcmp (const void *s1, const void *s2, grub_size_t n)
+{
+ const char *t1 = s1;
+ const char *t2 = s2;
+
+ while (n--)
+ {
+ if (*t1 != *t2)
+ return (int) *t1 - (int) *t2;
+
+ t1++;
+ t2++;
+ }
+
+ return 0;
+}
+
+int memcmp (const void *s1, const void *s2, grub_size_t n)
+ __attribute__ ((alias ("grub_memcmp")));
+
+void *memmove (void *dest, const void *src, grub_size_t n)
+ __attribute__ ((alias ("grub_memmove")));
+
+void *memcpy (void *dest, const void *src, grub_size_t n)
+ __attribute__ ((alias ("grub_memmove")));
+
+void *grub_decompressor_scratch;
+
+void
+find_scratch (void *src, void *dst, unsigned long srcsize,
+ unsigned long dstsize)
+{
+#ifdef _mips
+ /* Decoding from ROM. */
+ if (((grub_addr_t) src & 0x10000000))
+ {
+ grub_decompressor_scratch = (void *) ALIGN_UP((grub_addr_t) dst + dstsize,
+ 256);
+ return;
+ }
+#endif
+ if ((char *) src + srcsize > (char *) dst + dstsize)
+ grub_decompressor_scratch = (void *) ALIGN_UP ((grub_addr_t) src + srcsize,
+ 256);
+ else
+ grub_decompressor_scratch = (void *) ALIGN_UP ((grub_addr_t) dst + dstsize,
+ 256);
+ return;
+}