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-rw-r--r--pcilib/datacpy.c90
1 files changed, 90 insertions, 0 deletions
diff --git a/pcilib/datacpy.c b/pcilib/datacpy.c
new file mode 100644
index 0000000..15dfbe9
--- /dev/null
+++ b/pcilib/datacpy.c
@@ -0,0 +1,90 @@
+#define _POSIX_C_SOURCE 200112L
+#define _GNU_SOURCE
+
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include <stdint.h>
+#include <assert.h>
+#include <ctype.h>
+#include <time.h>
+#include <sched.h>
+#include <arpa/inet.h>
+#include <sys/time.h>
+
+#include "pci.h"
+#include "tools.h"
+#include "error.h"
+
+void *pcilib_datacpy32(void * dst, void const * src, size_t n, pcilib_endianess_t endianess) {
+ uint32_t * plDst = (uint32_t *) dst;
+ uint32_t const * plSrc = (uint32_t const *) src;
+
+ int swap = 0;
+
+ if (endianess)
+ swap = (endianess == PCILIB_BIG_ENDIAN)?(ntohs(1)!=1):(ntohs(1)==1);
+
+ if (swap) {
+ while (n > 0) {
+ *plDst = ntohl(*plSrc);
+ ++plSrc;
+ ++plDst;
+ --n;
+ }
+ } else {
+ while (n > 0) {
+ *plDst = *plSrc;
+ ++plSrc;
+ ++plDst;
+ --n;
+ }
+ }
+
+ return dst;
+}
+
+void *pcilib_datacpy64(void * dst, void const * src, size_t n, pcilib_endianess_t endianess) {
+ uint64_t * plDst = (uint64_t *) dst;
+ uint64_t const * plSrc = (uint64_t const *) src;
+
+ int swap = 0;
+
+ if (endianess)
+ swap = (endianess == PCILIB_BIG_ENDIAN)?(be64toh(1)!=1):(be64toh(1)==1);
+
+ if (swap) {
+ while (n > 0) {
+ *plDst = ntohl(*plSrc);
+ ++plSrc;
+ ++plDst;
+ --n;
+ }
+ } else {
+ while (n > 0) {
+ *plDst = *plSrc;
+ ++plSrc;
+ ++plDst;
+ --n;
+ }
+ }
+
+ return dst;
+}
+
+typedef void* (*pcilib_datacpy_routine_t)(void * dst, void const * src, size_t n, pcilib_endianess_t endianess);
+static pcilib_datacpy_routine_t pcilib_datacpy_routines[4] = {
+ NULL, NULL, pcilib_datacpy32, pcilib_datacpy64
+};
+
+void *pcilib_datacpy(void * dst, void const * src, uint8_t size, size_t n, pcilib_endianess_t endianess) {
+ size_t pos = 0;
+ pcilib_datacpy_routine_t routine;
+
+ assert((size)&&(size < 64));
+
+ while (size >>= 1) ++pos;
+ routine = pcilib_datacpy_routines[pos];
+
+ return routine(dst, src, n, endianess);
+}