1 files changed, 7 insertions, 1 deletions
diff --git a/ir.h b/ir.h
index 213793f..8496a06 100644
--- a/ir.h
+++ b/ir.h
@@ -27,6 +27,7 @@ enum instype {
 	INS_RETV,  // return r1
 	INS_MOV,   // r0 = r1
 	INS_BRK,   // halt
+	INS_HWI,   // hwi r1
 };
 
 enum condcode {
@@ -37,6 +38,9 @@ enum reftype {
 	REF_REG,  // reg
 	REF_MEM,  // [reg + offset + {0, .data, heap base}[rel]]
 	REF_IMM,  // imm
+	// This can only appear in user-entered asm literals and will be eliminated in the compiler.
+	// It should refer to a symbol that is in scope, otherwise an error will be reported.
+	REF_VARNAME,  // name
 };
 
 enum refrel {
@@ -61,6 +65,7 @@ struct ref {
 	int offset;
 	enum refrel rel;
 	int imm;
+	const char *name;  // should be a return value from ir_str()
 };
 
 struct irins {
@@ -86,7 +91,7 @@ void ir_delete(struct ir *ir);
 void ir_print(struct ir *ir, FILE *f);
 void irins_print(struct irins *ins, FILE *f);
 const char* condcode_show(enum condcode condcode);
-void ref_show(struct ref ref, char *dest);  // dest must have size at least 40
+const char* ref_show(struct ref ref);  // returns pointer to static buffer
 
 const char* ir_str(const char *str);  // returns interned string
 
@@ -113,6 +118,7 @@ const char* gen_label_name(void);
 struct ref ref_reg(int reg);
 struct ref ref_mem(int reg, int offset, enum refrel rel);
 struct ref ref_imm(int imm);
+struct ref ref_varname(const char *name);
 struct ref ref_next_register(void);
 
 bool ref_equal(struct ref r1, struct ref r2);