> compile NEMU

ysyx_22040000 李心杨
Linux calcite 6.1.71 #1-NixOS SMP PREEMPT_DYNAMIC Fri Jan  5 14:18:41 UTC 2024 x86_64 GNU/Linux
 22:17:14  up 2 days 11:12,  2 users,  load average: 1.39, 0.69, 0.39

nemu/.vscode/property.json

@@ -0,0 +1,11 @@
+{
+	"toolChain": "xilinx",
+	"prjName": {
+		"PL": "template"
+	},
+	"soc": {
+		"core": "none"
+	},
+	"enableShowLog": false,
+	"device": "none"
+}

nemu/Makefile

@@ -66,7 +66,8 @@ include $(NEMU_HOME)/tests/Makefile
 all-tests: TEST_OBJS = $(filter-out $(OBJ_DIR)/src/nemu-main.o, $(OBJS))
 all-tests: CFLAGS += $(shell pkg-config --cflags check)
 all-tests: LDFLAGS += $(shell pkg-config --libs check)
+all-tests: INC_PATH += $(NEMU_HOME)/src/isa/$(GUEST_ISA)/local-include
 all-tests: $(TEST_SRCS:%.c=$(OBJ_DIR)/%)
 
-test: $(addprefix $(OBJ_DIR), $(TEST_NAMES))
+test: all-tests
 	@$(OBJ_DIR)/tests/expr_test

nemu/src/isa/riscv32/reg.c

@@ -36,5 +36,15 @@ void isa_reg_display() {
 }
 
 word_t isa_reg_str2val(const char *s, bool *success) {
-  return 0;
+  assert(s);
+  int i;
+  for (i = 0; i < 32 && strcmp(s, regs[i]) != 0; i++)
+    ;
+
+  if (i == 32) {
+    success = false;
+    return 0;
+  }
+
+  return gpr(i);
 }

nemu/src/monitor/sdb/addrexp.l

@@ -7,7 +7,7 @@
 
 %%
 
-$?[a-zA-Z]{2,3}   { yylval = isa_reg_str2val(yytext, &success); if(!success) { return YYerror; } }
+$$?[a-zA-Z]{2,3}  { yylval = isa_reg_str2val(yytext + 1, &success); if(!success) { return YYerror; } }
 0[xX][0-9a-fA-F]+ { yylval = strtoul(yytext, NULL, 16); return HEX_NUMBER; }
 [0-9]+            { yylval = strtoul(yytext, NULL, 10); return NUMBER; }
 [+\-*/()]         { return *yytext; }

nemu/tests/Makefile

@@ -1,7 +1,7 @@
 TEST_SRCS += tests/expr_test.c
 YACC = bison
 
-$(OBJ_DIR)/% %: %.c $(TEST_OBJS) app
+$(OBJ_DIR)/%: %.c $(TEST_OBJS) app
 	@mkdir -p $(dir $@)
 	@echo + CC $<
 	@$(CC) $(CFLAGS) -o $@.o -c $< 

nemu/tests/expr_test.c

@@ -1,3 +1,4 @@
+#include "macro.h"
 #include "sys/types.h"
 #include <unistd.h>
 #include <assert.h>
@@ -9,6 +10,7 @@
 #include <time.h>
 #include <addrexp.h>
 #include <addrexp_lex.h>
+#include <reg.h>
 
 char buf[65536] = {}, ref_buf[65536] = {};
 static char code_buf[65536 + 128] = {}; // a little larger than `buf`
@@ -162,6 +164,22 @@ START_TEST(test_expr_negative_operand) {
 }
 END_TEST
 
+extern const char *regs[];
+START_TEST(test_expr_plain_register) {
+  int i;
+  char buf[5] = {};
+  // NOTE: need to fix this if want to support more arch
+  buf[0] = '$';
+  for (i = 0; i < 32; i++) {
+    strcpy(buf + 1, regs[i]);
+    gpr(i) = i;
+  }
+  for (i = 1; i < 5; i++) {
+    buf[i] = '\0';
+  }
+}
+END_TEST
+
 START_TEST(test_expr_register) {
   yy_scan_string(reg_exprs[_i].expr);
   uint32_t value;
@@ -184,6 +202,8 @@ Suite *expr_suite(void) {
   tcase_add_loop_test(tc_core, test_expr_random_100, 0, 20);
   tcase_add_loop_test(tc_core, test_expr_negative_operand, 0,
                       sizeof(exprs) / sizeof(exprs[0]));
+  tcase_add_loop_test(tc_core, test_expr_plain_register, 0,
+                      sizeof(reg_exprs) / sizeof(reg_exprs[0]));
   tcase_add_loop_test(tc_core, test_expr_register, 0,
                       sizeof(reg_exprs) / sizeof(reg_exprs[0]));
   suite_add_tcase(s, tc_core);