initial commit.

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