1 files changed, 33 insertions, 0 deletions
diff --git a/gen.h b/gen.h
new file mode 100644
index 0000000..5087b57
--- /dev/null
+++ b/gen.h
@@ -0,0 +1,33 @@
+#ifndef GEN_H_
+#define GEN_H_
+#include <stdint.h>
+
+#if defined(X86_64) || defined(X86_32)
+typedef uint8_t code_word;
+#define RESERVE_WORDS 5 //opcode + 4-byte displacement
+#else
+typedef uint32_t code_word;
+#define RESERVE_WORDS 4 //1 push + 1 ldr + 1bx + 1 constant
+#endif
+typedef code_word * code_ptr;
+#define CODE_ALLOC_SIZE (1024*1024)
+
+typedef struct {
+	code_ptr cur;
+	code_ptr last;
+} code_info;
+
+void check_alloc_code(code_info *code, uint32_t inst_size);
+
+void init_code_info(code_info *code);
+void call(code_info *code, code_ptr fun);
+void jmp(code_info *code, code_ptr dest);
+void jmp_r(code_info *code, uint8_t dst);
+//call a function and put the arguments in the appropriate place according to the host ABI
+void call_args(code_info *code, code_ptr fun, uint32_t num_args, ...);
+//like the above, but follows other aspects of the ABI like stack alignment
+void call_args_abi(code_info *code, code_ptr fun, uint32_t num_args, ...);
+void save_callee_save_regs(code_info *code);
+void restore_callee_save_regs(code_info *code);
+
+#endif //GEN_H_