draft: hexagon system emulation initial

target/hexagon/cpu.c

@@ -216,8 +216,7 @@ static void hexagon_dump(CPUHexagonState *env, FILE *f, int flags)
     qemu_fprintf(f, "  cs0 = 0x00000000\n");
     qemu_fprintf(f, "  cs1 = 0x00000000\n");
 #else
-    print_reg(f, env, HEX_REG_CAUSE);
-    print_reg(f, env, HEX_REG_BADVA);
+    print_reg(f, env, HEX_SREG_BADVA);
     print_reg(f, env, HEX_REG_CS0);
     print_reg(f, env, HEX_REG_CS1);
 #endif

target/hexagon/cpu_bits.h

@@ -37,6 +37,8 @@ enum hex_cause {
     HEX_CAUSE_PC_NOT_ALIGNED =  0x01e,
     HEX_CAUSE_PRIV_NO_UREAD  =  0x024,
     HEX_CAUSE_PRIV_NO_UWRITE =  0x025,
+    HEX_CAUSE_PRIV_USER_NO_GINSN = 0x01a,
+    HEX_CAUSE_PRIV_USER_NO_SINSN = 0x01b,
 };
 
 #define PACKET_WORDS_MAX         4

target/hexagon/gen_analyze_funcs.py

@@ -42,6 +42,14 @@ def gen_analyze_func(f, tag, regs, imms):
     f.write(f"static void analyze_{tag}(DisasContext *ctx)\n")
     f.write("{\n")
 
+    if hex_common.tag_ignore(tag):
+        f.write("}\n\n")
+        return
+
+    if ("A_PRIV" in hex_common.attribdict[tag] or
+        "A_GUEST" in hex_common.attribdict[tag]):
+        f.write("#ifndef CONFIG_USER_ONLY\n")
+
     f.write("    Insn *insn G_GNUC_UNUSED = ctx->insn;\n")
     if (hex_common.is_hvx_insn(tag)):
         if hex_common.has_hvx_helper(tag):
@@ -74,6 +82,10 @@ def gen_analyze_func(f, tag, regs, imms):
         if reg.is_written():
             reg.analyze_write(f, tag, regno)
 
+    if ("A_PRIV" in hex_common.attribdict[tag] or
+        "A_GUEST" in hex_common.attribdict[tag]):
+        f.write("#endif /* !CONFIG_USER_ONLY */\n")
+
     f.write("}\n\n")
 
 

target/hexagon/gen_helper_funcs.py

@@ -109,26 +109,23 @@ def main():
     tagimms = hex_common.get_tagimms()
 
     with open(args.out, "w") as f:
-        for tag in hex_common.tags:
-            ## Skip the priv instructions
-            if "A_PRIV" in hex_common.attribdict[tag]:
+        for tag in hex_common.get_user_tags():
+            if hex_common.tag_ignore(tag):
                 continue
-            ## Skip the guest instructions
-            if "A_GUEST" in hex_common.attribdict[tag]:
-                continue
-            ## Skip the diag instructions
-            if tag == "Y6_diag":
-                continue
-            if tag == "Y6_diag0":
+            if hex_common.skip_qemu_helper(tag):
                 continue
-            if tag == "Y6_diag1":
+            if hex_common.is_idef_parser_enabled(tag):
                 continue
+            gen_helper_function(f, tag, tagregs, tagimms)
+
+        f.write("#if !defined(CONFIG_USER_ONLY)\n")
+        for tag in hex_common.get_sys_tags():
             if hex_common.skip_qemu_helper(tag):
                 continue
             if hex_common.is_idef_parser_enabled(tag):
                 continue
-
             gen_helper_function(f, tag, tagregs, tagimms)
+        f.write("#endif\n")
 
 
 if __name__ == "__main__":

target/hexagon/gen_helper_protos.py

@@ -59,27 +59,28 @@ def main():
     tagimms = hex_common.get_tagimms()
 
     with open(args.out, "w") as f:
-        for tag in hex_common.tags:
-            ## Skip the priv instructions
-            if "A_PRIV" in hex_common.attribdict[tag]:
+        for tag in hex_common.get_user_tags():
+            if hex_common.tag_ignore(tag):
                 continue
-            ## Skip the guest instructions
-            if "A_GUEST" in hex_common.attribdict[tag]:
-                continue
-            ## Skip the diag instructions
-            if tag == "Y6_diag":
-                continue
-            if tag == "Y6_diag0":
+
+            if hex_common.skip_qemu_helper(tag):
                 continue
-            if tag == "Y6_diag1":
+            if hex_common.is_idef_parser_enabled(tag):
                 continue
 
+            gen_helper_prototype(f, tag, tagregs, tagimms)
+
+        f.write("#if !defined(CONFIG_USER_ONLY)\n")
+        for tag in hex_common.get_sys_tags():
+            if hex_common.tag_ignore(tag):
+                continue
             if hex_common.skip_qemu_helper(tag):
                 continue
             if hex_common.is_idef_parser_enabled(tag):
                 continue
 
             gen_helper_prototype(f, tag, tagregs, tagimms)
+        f.write("#endif\n")
 
 
 if __name__ == "__main__":

target/hexagon/gen_idef_parser_funcs.py

@@ -60,6 +60,8 @@ def main():
         f.write('#include "macros.h.inc"\n\n')
 
         for tag in hex_common.tags:
+            if hex_common.tag_ignore(tag):
+                continue
             ## Skip the priv instructions
             if "A_PRIV" in hex_common.attribdict[tag]:
                 continue

target/hexagon/gen_op_attribs.py

@@ -38,7 +38,7 @@ def main():
     ##     Generate all the attributes associated with each instruction
     ##
     with open(args.out, "w") as f:
-        for tag in hex_common.tags:
+        for tag in hex_common.get_all_tags():
             f.write(
                 f"OP_ATTRIB({tag},ATTRIBS("
                 f'{",".join(sorted(hex_common.attribdict[tag]))}))\n'

target/hexagon/gen_opcodes_def.py

@@ -37,7 +37,10 @@ def main():
     ##     Generate a list of all the opcodes
     ##
     with open(args.out, "w") as f:
-        for tag in hex_common.tags:
+        for tag in hex_common.get_user_tags():
+            f.write(f"OPCODE({tag}),\n")
+
+        for tag in hex_common.get_sys_tags():
             f.write(f"OPCODE({tag}),\n")
 
 

target/hexagon/gen_tcg_func_table.py

@@ -41,19 +41,9 @@ def main():
         f.write("#define HEXAGON_FUNC_TABLE_H\n\n")
 
         f.write("const SemanticInsn opcode_genptr[XX_LAST_OPCODE] = {\n")
+
         for tag in hex_common.tags:
-            ## Skip the priv instructions
-            if "A_PRIV" in hex_common.attribdict[tag]:
-                continue
-            ## Skip the guest instructions
-            if "A_GUEST" in hex_common.attribdict[tag]:
-                continue
-            ## Skip the diag instructions
-            if tag == "Y6_diag":
-                continue
-            if tag == "Y6_diag0":
-                continue
-            if tag == "Y6_diag1":
+            if hex_common.tag_ignore(tag):
                 continue
 
             f.write(f"    [{tag}] = generate_{tag},\n")

target/hexagon/gen_tcg_funcs.py

@@ -21,7 +21,7 @@
 import re
 import string
 import hex_common
-
+from textwrap import dedent
 
 ##
 ## Generate the TCG code to call the helper
@@ -50,6 +50,18 @@ def gen_tcg_func(f, tag, regs, imms):
 
     f.write("    Insn *insn G_GNUC_UNUSED = ctx->insn;\n")
 
+    if "A_PRIV" in hex_common.attribdict[tag]:
+        f.write(dedent("""\
+#ifdef CONFIG_USER_ONLY
+    hex_gen_exception_end_tb(ctx, HEX_CAUSE_PRIV_USER_NO_SINSN);
+#else
+"""))
+    if "A_GUEST" in hex_common.attribdict[tag]:
+        f.write(dedent("""\
+#ifdef CONFIG_USER_ONLY
+    hex_gen_exception_end_tb(ctx, HEX_CAUSE_PRIV_USER_NO_GINSN);
+#else
+"""))
     if hex_common.need_ea(tag):
         f.write("    TCGv EA G_GNUC_UNUSED = tcg_temp_new();\n")
 
@@ -97,6 +109,11 @@ def gen_tcg_func(f, tag, regs, imms):
         if reg.is_written():
             reg.log_write(f, tag)
 
+    if (
+        "A_PRIV" in hex_common.attribdict[tag]
+        or "A_GUEST" in hex_common.attribdict[tag]
+    ):
+        f.write("#endif   /* CONFIG_USER_ONLY */\n")
     f.write("}\n\n")
 
 
@@ -121,18 +138,7 @@ def main():
             f.write('#include "idef-generated-emitter.h.inc"\n\n')
 
         for tag in hex_common.tags:
-            ## Skip the priv instructions
-            if "A_PRIV" in hex_common.attribdict[tag]:
-                continue
-            ## Skip the guest instructions
-            if "A_GUEST" in hex_common.attribdict[tag]:
-                continue
-            ## Skip the diag instructions
-            if tag == "Y6_diag":
-                continue
-            if tag == "Y6_diag0":
-                continue
-            if tag == "Y6_diag1":
+            if hex_common.tag_ignore(tag):
                 continue
 
             gen_def_tcg_func(f, tag, tagregs, tagimms)