[v3,11/12] target/hexagon: call idef-parser functions

Commit Message

Alessandro Di Federico March 30, 2021, 2:37 p.m. UTC

From: Alessandro Di Federico <[e-mail]>

Extend gen_tcg_funcs.py in order to emit calls to the functions emitted
by the idef-parser, if available.

Signed-off-by: Alessandro Di Federico <[e-mail]>
---
 target/hexagon/gen_tcg_funcs.py | 28 ++++++++++++++++++++++++++--
 target/hexagon/hex_common.py    | 10 ++++++++++
 target/hexagon/meson.build      | 24 ++++++++++++++----------
 3 files changed, 50 insertions(+), 12 deletions(-)

Patch

diff --git a/target/hexagon/gen_tcg_funcs.py b/target/hexagon/gen_tcg_funcs.py
index db9f663a77..5980dab8ee 100755
--- a/target/hexagon/gen_tcg_funcs.py
+++ b/target/hexagon/gen_tcg_funcs.py
@@ -394,7 +394,29 @@  def gen_tcg_func(f, tag, regs, imms):
         if (hex_common.is_read(regid)):
             genptr_src_read_opn(f,regtype,regid,tag)
 
-    if ( hex_common.skip_qemu_helper(tag) ):
+    if hex_common.is_idef_parser_enabled(tag):
+        declared = []
+        ## Handle registers
+        for regtype,regid,toss,numregs in regs:
+            if (hex_common.is_pair(regid)
+                or (hex_common.is_single(regid)
+                    and hex_common.is_old_val(regtype, regid, tag))):
+                declared.append("%s%sV" % (regtype, regid))
+                if regtype == "M":
+                    declared.append("%s%sN" % (regtype, regid))
+            elif hex_common.is_new_val(regtype, regid, tag):
+                declared.append("%s%sN" % (regtype,regid))
+            else:
+                print("Bad register parse: ",regtype,regid,toss,numregs)
+
+        ## Handle immediates
+        for immlett,bits,immshift in imms:
+            declared.append(hex_common.imm_name(immlett))
+
+        arguments = ", ".join(["ctx", "insn", "pkt"] + declared)
+        f.write("    emit_%s(%s);\n" % (tag, arguments))
+
+    elif ( hex_common.skip_qemu_helper(tag) ):
         f.write("    fGEN_TCG_%s(%s);\n" % (tag, hex_common.semdict[tag]))
     else:
         ## Generate the call to the helper
@@ -455,12 +477,14 @@  def main():
     hex_common.read_attribs_file(sys.argv[2])
     hex_common.read_overrides_file(sys.argv[3])
     hex_common.calculate_attribs()
+    hex_common.read_idef_parser_enabled_file(sys.argv[4])
     tagregs = hex_common.get_tagregs()
     tagimms = hex_common.get_tagimms()
 
-    with open(sys.argv[4], 'w') as f:
+    with open(sys.argv[5], 'w') as f:
         f.write("#ifndef HEXAGON_TCG_FUNCS_H\n")
         f.write("#define HEXAGON_TCG_FUNCS_H\n\n")
+        f.write("#include \"idef-generated-emitter.h.inc\"\n\n")
 
         for tag in hex_common.tags:
             ## Skip the priv instructions
diff --git a/target/hexagon/hex_common.py b/target/hexagon/hex_common.py
index b3b534057d..648ad29e94 100755
--- a/target/hexagon/hex_common.py
+++ b/target/hexagon/hex_common.py
@@ -28,6 +28,7 @@ 
 attribinfo = {}       # Register information and misc
 tags = []             # list of all tags
 overrides = {}        # tags with helper overrides
+idef_parser_enabled = {} # tags enabled for idef-parser
 
 # We should do this as a hash for performance,
 # but to keep order let's keep it as a list.
@@ -201,6 +202,9 @@  def need_ea(tag):
 def skip_qemu_helper(tag):
     return tag in overrides.keys()
 
+def is_idef_parser_enabled(tag):
+    return tag in idef_parser_enabled
+
 def imm_name(immlett):
     return "%siV" % immlett
 
@@ -232,3 +236,9 @@  def read_overrides_file(name):
             continue
         tag = overridere.findall(line)[0]
         overrides[tag] = True
+
+def read_idef_parser_enabled_file(name):
+    global idef_parser_enabled
+    with open(name, "r") as idef_parser_enabled_file:
+        lines = idef_parser_enabled_file.read().strip().split("\n")
+        idef_parser_enabled = set(lines)
diff --git a/target/hexagon/meson.build b/target/hexagon/meson.build
index 2b7d6c8c62..6adfe0468d 100644
--- a/target/hexagon/meson.build
+++ b/target/hexagon/meson.build
@@ -72,16 +72,6 @@  helper_protos_generated = custom_target(
 )
 hexagon_ss.add(helper_protos_generated)
 
-tcg_funcs_generated = custom_target(
-    'tcg_funcs_generated.c.inc',
-    output: 'tcg_funcs_generated.c.inc',
-    input: 'gen_tcg_funcs.py',
-    depends: [semantics_generated],
-    depend_files: [hex_common_py, attribs_def, gen_tcg_h],
-    command: [python, '@INPUT@', semantics_generated, attribs_def, gen_tcg_h, '@OUTPUT@'],
-)
-hexagon_ss.add(tcg_funcs_generated)
-
 tcg_func_table_generated = custom_target(
     'tcg_func_table_generated.c.inc',
     output: 'tcg_func_table_generated.c.inc',
@@ -234,4 +224,18 @@  idef_generated_tcg = custom_target(
     command: [idef_parser, '@INPUT@', '@OUTPUT0@', '@OUTPUT1@', '@OUTPUT2@'],
 )
 
+idef_generated_list = idef_generated_tcg[2].full_path()
+
+hexagon_ss.add(idef_generated_tcg)
+
+tcg_funcs_generated = custom_target(
+    'tcg_funcs_generated.c.inc',
+    output: 'tcg_funcs_generated.c.inc',
+    input: 'gen_tcg_funcs.py',
+    depends: [semantics_generated, idef_generated_tcg],
+    depend_files: [hex_common_py, attribs_def, gen_tcg_h],
+    command: [python, '@INPUT@', semantics_generated, attribs_def, gen_tcg_h, idef_generated_list, '@OUTPUT@'],
+)
+hexagon_ss.add(tcg_funcs_generated)
+
 target_arch += {'hexagon': hexagon_ss}