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-rw-r--r--src/internal/perk_impl.h64
1 files changed, 64 insertions, 0 deletions
diff --git a/src/internal/perk_impl.h b/src/internal/perk_impl.h
new file mode 100644
index 0000000..497ddbe
--- /dev/null
+++ b/src/internal/perk_impl.h
@@ -0,0 +1,64 @@
+#ifndef PERK_IMPL_H
+#define PERK_IMPL_H
+
+#include <stdint.h>
+#include <endian.h>
+
+/* internal structures */
+struct perk_ctx {
+ int argc;
+ char ** argv;
+ char ** envp;
+ const char * fname;
+ int status;
+ int flags;
+ int fd;
+ FILE * fout;
+ FILE * tmp;
+ struct pe_raw_image map;
+};
+
+#if (BYTE_ORDER == LITTLE_ENDIAN)
+
+static inline uint16_t pe_read_short(const unsigned char * raw)
+{
+ return *(uint16_t *)raw;
+}
+
+static inline uint32_t pe_read_long(const unsigned char * raw)
+{
+ return *(uint32_t *)raw;
+}
+
+static inline uint64_t pe_read_quad(const unsigned char * raw)
+{
+ return *(uint64_t *)raw;
+}
+
+#else
+
+static inline uint16_t pe_read_short(unsigned char * raw)
+{
+ uint16_t x = *(uint16_t *)raw;
+ return x<<8 | x>>8;
+}
+
+static inline uint32_t pe_swap_long(uint32_t x)
+{
+ return x<<24 | (x<<8) & 0xff0000 | (x>>8) & 0xff00 | x>>24;
+}
+
+static inline uint32_t pe_read_long(unsigned char * raw)
+{
+ return pe_swap_long(*(uint32_t *)raw);
+}
+
+static inline uint64_t pe_read_quad(unsigned char * raw)
+{
+ uint64_t x = *(uint64_t *)raw;
+ return ((uint64_t)pe_swap_long(x)<<32) | pe_swap_long(x>>32);
+}
+
+#endif
+
+#endif