diff mbox series

Hexagon (target/hexagon/*.py): raise exception on reg parsing error

Message ID 1f5dbd92f68fdd89e2647e4ba527a2c32cf0f070.1683217043.git.quic_mathbern@quicinc.com
State New
Headers show
Series Hexagon (target/hexagon/*.py): raise exception on reg parsing error | expand

Commit Message

Matheus Tavares Bernardino May 4, 2023, 4:17 p.m. UTC 
Currently, the python scripts used for the hexagon building will not
abort the compilation when there is an error parsing a register. Let's
make the compilation properly fail in such cases by rasing an exception
instead of just printing a warning message, which might get lost in the
output.

This patch was generated with:

 git grep -l "Bad register" *hexagon* | \
 xargs sed -i "" -e 's/print("Bad register parse: "[, ]*\([^)]*\))/hex_common.bad_register(\1)/g'

Plus the bad_register() helper added to hex_common.py.

Signed-off-by: Matheus Tavares Bernardino <quic_mathbern@quicinc.com>
---
 target/hexagon/gen_analyze_funcs.py     | 30 +++++-----
 target/hexagon/gen_helper_funcs.py      | 14 ++---
 target/hexagon/gen_helper_protos.py     |  2 +-
 target/hexagon/gen_idef_parser_funcs.py |  2 +-
 target/hexagon/gen_tcg_funcs.py         | 78 ++++++++++++-------------
 target/hexagon/hex_common.py            |  3 +
 6 files changed, 66 insertions(+), 63 deletions(-)

Comments

Taylor Simpson May 5, 2023, 4:58 p.m. UTC | #1 
> -----Original Message-----
> From: Matheus Tavares Bernardino <quic_mathbern@quicinc.com>
> Sent: Thursday, May 4, 2023 11:18 AM
> To: qemu-devel@nongnu.org
> Cc: ale@rev.ng; Taylor Simpson <tsimpson@quicinc.com>; anjo@rev.ng
> Subject: [PATCH] Hexagon (target/hexagon/*.py): raise exception on reg
> parsing error
> 
> Currently, the python scripts used for the hexagon building will not abort the
> compilation when there is an error parsing a register. Let's make the
> compilation properly fail in such cases by rasing an exception instead of just
> printing a warning message, which might get lost in the output.
> 
> This patch was generated with:
> 
>  git grep -l "Bad register" *hexagon* | \  xargs sed -i "" -e 's/print("Bad
> register parse: "[, ]*\([^)]*\))/hex_common.bad_register(\1)/g'
> 
> Plus the bad_register() helper added to hex_common.py.
> 
> Signed-off-by: Matheus Tavares Bernardino <quic_mathbern@quicinc.com>
> ---
>  target/hexagon/gen_analyze_funcs.py     | 30 +++++-----
>  target/hexagon/gen_helper_funcs.py      | 14 ++---
>  target/hexagon/gen_helper_protos.py     |  2 +-
>  target/hexagon/gen_idef_parser_funcs.py |  2 +-
>  target/hexagon/gen_tcg_funcs.py         | 78 ++++++++++++-------------
>  target/hexagon/hex_common.py            |  3 +
>  6 files changed, 66 insertions(+), 63 deletions(-)

Tested-by: Taylor Simpson <tsimpson@quicinc.com>
Reviewed-by: Taylor Simpson <tsimpson@quicinc.com>

Queued for next Hexagon PR

Thanks,
Taylor
diff mbox series

Patch

diff --git a/target/hexagon/gen_analyze_funcs.py b/target/hexagon/gen_analyze_funcs.py
index c74443da78..0584ef9d4d 100755
--- a/target/hexagon/gen_analyze_funcs.py
+++ b/target/hexagon/gen_analyze_funcs.py
@@ -45,7 +45,7 @@  def analyze_opn_old(f, tag, regtype, regid, regno):
             f.write(f"    const int {regN} = insn->regno[{regno}];\n")
             f.write(f"    ctx_log_reg_write(ctx, {regN}, {predicated});\n")
         else:
-            print("Bad register parse: ", regtype, regid)
+            hex_common.bad_register(regtype, regid)
     elif regtype == "P":
         if regid in {"s", "t", "u", "v"}:
             f.write(f"//    const int {regN} = insn->regno[{regno}];\n")
@@ -53,7 +53,7 @@  def analyze_opn_old(f, tag, regtype, regid, regno):
             f.write(f"    const int {regN} = insn->regno[{regno}];\n")
             f.write(f"    ctx_log_pred_write(ctx, {regN});\n")
         else:
-            print("Bad register parse: ", regtype, regid)
+            hex_common.bad_register(regtype, regid)
     elif regtype == "C":
         if regid == "ss":
             f.write(
@@ -70,12 +70,12 @@  def analyze_opn_old(f, tag, regtype, regid, regno):
             f.write(f"    const int {regN} = insn->regno[{regno}] " "+ HEX_REG_SA0;\n")
             f.write(f"    ctx_log_reg_write(ctx, {regN}, {predicated});\n")
         else:
-            print("Bad register parse: ", regtype, regid)
+            hex_common.bad_register(regtype, regid)
     elif regtype == "M":
         if regid == "u":
             f.write(f"//    const int {regN} = insn->regno[{regno}];\n")
         else:
-            print("Bad register parse: ", regtype, regid)
+            hex_common.bad_register(regtype, regid)
     elif regtype == "V":
         newv = "EXT_DFL"
         if hex_common.is_new_result(tag):
@@ -95,7 +95,7 @@  def analyze_opn_old(f, tag, regtype, regid, regno):
             f.write(f"    const int {regN} = insn->regno[{regno}];\n")
             f.write(f"    ctx_log_vreg_write(ctx, {regN}, {newv}, " f"{predicated});\n")
         else:
-            print("Bad register parse: ", regtype, regid)
+            hex_common.bad_register(regtype, regid)
     elif regtype == "Q":
         if regid in {"d", "e", "x"}:
             f.write(f"    const int {regN} = insn->regno[{regno}];\n")
@@ -103,7 +103,7 @@  def analyze_opn_old(f, tag, regtype, regid, regno):
         elif regid in {"s", "t", "u", "v"}:
             f.write(f"//    const int {regN} = insn->regno[{regno}];\n")
         else:
-            print("Bad register parse: ", regtype, regid)
+            hex_common.bad_register(regtype, regid)
     elif regtype == "G":
         if regid in {"dd"}:
             f.write(f"//    const int {regN} = insn->regno[{regno}];\n")
@@ -114,7 +114,7 @@  def analyze_opn_old(f, tag, regtype, regid, regno):
         elif regid in {"s"}:
             f.write(f"//    const int {regN} = insn->regno[{regno}];\n")
         else:
-            print("Bad register parse: ", regtype, regid)
+            hex_common.bad_register(regtype, regid)
     elif regtype == "S":
         if regid in {"dd"}:
             f.write(f"//    const int {regN} = insn->regno[{regno}];\n")
@@ -125,9 +125,9 @@  def analyze_opn_old(f, tag, regtype, regid, regno):
         elif regid in {"s"}:
             f.write(f"//    const int {regN} = insn->regno[{regno}];\n")
         else:
-            print("Bad register parse: ", regtype, regid)
+            hex_common.bad_register(regtype, regid)
     else:
-        print("Bad register parse: ", regtype, regid)
+        hex_common.bad_register(regtype, regid)
 
 
 def analyze_opn_new(f, tag, regtype, regid, regno):
@@ -136,19 +136,19 @@  def analyze_opn_new(f, tag, regtype, regid, regno):
         if regid in {"s", "t"}:
             f.write(f"//    const int {regN} = insn->regno[{regno}];\n")
         else:
-            print("Bad register parse: ", regtype, regid)
+            hex_common.bad_register(regtype, regid)
     elif regtype == "P":
         if regid in {"t", "u", "v"}:
             f.write(f"//    const int {regN} = insn->regno[{regno}];\n")
         else:
-            print("Bad register parse: ", regtype, regid)
+            hex_common.bad_register(regtype, regid)
     elif regtype == "O":
         if regid == "s":
             f.write(f"//    const int {regN} = insn->regno[{regno}];\n")
         else:
-            print("Bad register parse: ", regtype, regid)
+            hex_common.bad_register(regtype, regid)
     else:
-        print("Bad register parse: ", regtype, regid)
+        hex_common.bad_register(regtype, regid)
 
 
 def analyze_opn(f, tag, regtype, regid, toss, numregs, i):
@@ -160,9 +160,9 @@  def analyze_opn(f, tag, regtype, regid, toss, numregs, i):
         elif hex_common.is_new_val(regtype, regid, tag):
             analyze_opn_new(f, tag, regtype, regid, i)
         else:
-            print("Bad register parse: ", regtype, regid, toss, numregs)
+            hex_common.bad_register(regtype, regid, toss, numregs)
     else:
-        print("Bad register parse: ", regtype, regid, toss, numregs)
+        hex_common.bad_register(regtype, regid, toss, numregs)
 
 
 ##
diff --git a/target/hexagon/gen_helper_funcs.py b/target/hexagon/gen_helper_funcs.py
index c73d792580..b9af864161 100755
--- a/target/hexagon/gen_helper_funcs.py
+++ b/target/hexagon/gen_helper_funcs.py
@@ -87,9 +87,9 @@  def gen_helper_arg_opn(f, regtype, regid, i, tag):
         elif hex_common.is_new_val(regtype, regid, tag):
             gen_helper_arg_new(f, regtype, regid, i)
         else:
-            print("Bad register parse: ", regtype, regid, toss, numregs)
+            hex_common.bad_register(regtype, regid, toss, numregs)
     else:
-        print("Bad register parse: ", regtype, regid, toss, numregs)
+        hex_common.bad_register(regtype, regid, toss, numregs)
 
 
 def gen_helper_arg_imm(f, immlett):
@@ -135,7 +135,7 @@  def gen_helper_dest_decl_opn(f, regtype, regid, i):
         else:
             gen_helper_dest_decl(f, regtype, regid, i)
     else:
-        print("Bad register parse: ", regtype, regid, toss, numregs)
+        hex_common.bad_register(regtype, regid, toss, numregs)
 
 
 def gen_helper_src_var_ext(f, regtype, regid):
@@ -185,7 +185,7 @@  def gen_helper_return_opn(f, regtype, regid, i):
         else:
             gen_helper_return(f, regtype, regid, i)
     else:
-        print("Bad register parse: ", regtype, regid, toss, numregs)
+        hex_common.bad_register(regtype, regid, toss, numregs)
 
 
 ##
@@ -239,7 +239,7 @@  def gen_helper_function(f, tag, tagregs, tagimms):
                     else:
                         gen_helper_return_type(f, regtype, regid, i)
                 else:
-                    print("Bad register parse: ", regtype, regid, toss, numregs)
+                    hex_common.bad_register(regtype, regid, toss, numregs)
             i += 1
 
         if numscalarresults == 0:
@@ -262,7 +262,7 @@  def gen_helper_function(f, tag, tagregs, tagimms):
                         # This is the return value of the function
                         continue
                 else:
-                    print("Bad register parse: ", regtype, regid, toss, numregs)
+                    hex_common.bad_register(regtype, regid, toss, numregs)
                 i += 1
 
         ## For conditional instructions, we pass in the destination register
@@ -327,7 +327,7 @@  def gen_helper_function(f, tag, tagregs, tagimms):
                     if hex_common.is_hvx_reg(regtype):
                         gen_helper_src_var_ext(f, regtype, regid)
                 else:
-                    print("Bad register parse: ", regtype, regid, toss, numregs)
+                    hex_common.bad_register(regtype, regid, toss, numregs)
 
         if "A_FPOP" in hex_common.attribdict[tag]:
             f.write("    arch_fpop_start(env);\n")
diff --git a/target/hexagon/gen_helper_protos.py b/target/hexagon/gen_helper_protos.py
index 187cd6e04e..b49368f5a4 100755
--- a/target/hexagon/gen_helper_protos.py
+++ b/target/hexagon/gen_helper_protos.py
@@ -52,7 +52,7 @@  def gen_def_helper_opn(f, tag, regtype, regid, toss, numregs, i):
     elif hex_common.is_single(regid):
         f.write(f", {def_helper_types[regtype]}")
     else:
-        print("Bad register parse: ", regtype, regid, toss, numregs)
+        hex_common.bad_register(regtype, regid, toss, numregs)
 
 
 ##
diff --git a/target/hexagon/gen_idef_parser_funcs.py b/target/hexagon/gen_idef_parser_funcs.py
index afe68bdb6f..83cb5c9ec4 100644
--- a/target/hexagon/gen_idef_parser_funcs.py
+++ b/target/hexagon/gen_idef_parser_funcs.py
@@ -130,7 +130,7 @@  def main():
                 elif is_single_new:
                     arguments.append(f"{prefix}{regtype}{regid}N")
                 else:
-                    print("Bad register parse: ", regtype, regid, toss, numregs)
+                    hex_common.bad_register(regtype, regid, toss, numregs)
 
             for immlett, bits, immshift in imms:
                 arguments.append(hex_common.imm_name(immlett))
diff --git a/target/hexagon/gen_tcg_funcs.py b/target/hexagon/gen_tcg_funcs.py
index fcb3384480..e7fe40356e 100755
--- a/target/hexagon/gen_tcg_funcs.py
+++ b/target/hexagon/gen_tcg_funcs.py
@@ -37,7 +37,7 @@  def genptr_decl_pair_writable(f, tag, regtype, regid, regno):
     elif regtype == "C":
         f.write(f"    const int {regN} = insn->regno[{regno}] + HEX_REG_SA0;\n")
     else:
-        print("Bad register parse: ", regtype, regid)
+        hex_common.bad_register(regtype, regid)
     f.write(f"    TCGv_i64 {regtype}{regid}V = " f"get_result_gpr_pair(ctx, {regN});\n")
 
 
@@ -53,7 +53,7 @@  def genptr_decl_writable(f, tag, regtype, regid, regno):
         f.write(f"    const int {regN} = insn->regno[{regno}];\n")
         f.write(f"    TCGv {regtype}{regid}V = tcg_temp_new();\n")
     else:
-        print("Bad register parse: ", regtype, regid)
+        hex_common.bad_register(regtype, regid)
 
 
 def genptr_decl(f, tag, regtype, regid, regno):
@@ -71,7 +71,7 @@  def genptr_decl(f, tag, regtype, regid, regno):
         elif regid in {"d", "e", "x", "y"}:
             genptr_decl_writable(f, tag, regtype, regid, regno)
         else:
-            print("Bad register parse: ", regtype, regid)
+            hex_common.bad_register(regtype, regid)
     elif regtype == "P":
         if regid in {"s", "t", "u", "v"}:
             f.write(
@@ -80,7 +80,7 @@  def genptr_decl(f, tag, regtype, regid, regno):
         elif regid in {"d", "e", "x"}:
             genptr_decl_writable(f, tag, regtype, regid, regno)
         else:
-            print("Bad register parse: ", regtype, regid)
+            hex_common.bad_register(regtype, regid)
     elif regtype == "C":
         if regid == "ss":
             f.write(f"    TCGv_i64 {regtype}{regid}V = " f"tcg_temp_new_i64();\n")
@@ -96,7 +96,7 @@  def genptr_decl(f, tag, regtype, regid, regno):
         elif regid == "d":
             genptr_decl_writable(f, tag, regtype, regid, regno)
         else:
-            print("Bad register parse: ", regtype, regid)
+            hex_common.bad_register(regtype, regid)
     elif regtype == "M":
         if regid == "u":
             f.write(f"    const int {regtype}{regid}N = " f"insn->regno[{regno}];\n")
@@ -105,7 +105,7 @@  def genptr_decl(f, tag, regtype, regid, regno):
                 "HEX_REG_M0];\n"
             )
         else:
-            print("Bad register parse: ", regtype, regid)
+            hex_common.bad_register(regtype, regid)
     elif regtype == "V":
         if regid in {"dd"}:
             f.write(f"    const int {regtype}{regid}N = " f"insn->regno[{regno}];\n")
@@ -159,7 +159,7 @@  def genptr_decl(f, tag, regtype, regid, regno):
                     f"{regtype}{regid}V_off);\n"
                 )
         else:
-            print("Bad register parse: ", regtype, regid)
+            hex_common.bad_register(regtype, regid)
     elif regtype == "Q":
         if regid in {"d", "e", "x"}:
             f.write(f"    const int {regtype}{regid}N = " f"insn->regno[{regno}];\n")
@@ -180,9 +180,9 @@  def genptr_decl(f, tag, regtype, regid, regno):
             if not hex_common.skip_qemu_helper(tag):
                 f.write(f"    TCGv_ptr {regtype}{regid}V = " "tcg_temp_new_ptr();\n")
         else:
-            print("Bad register parse: ", regtype, regid)
+            hex_common.bad_register(regtype, regid)
     else:
-        print("Bad register parse: ", regtype, regid)
+        hex_common.bad_register(regtype, regid)
 
 
 def genptr_decl_new(f, tag, regtype, regid, regno):
@@ -193,7 +193,7 @@  def genptr_decl_new(f, tag, regtype, regid, regno):
                 f"hex_new_value[insn->regno[{regno}]];\n"
             )
         else:
-            print("Bad register parse: ", regtype, regid)
+            hex_common.bad_register(regtype, regid)
     elif regtype == "P":
         if regid in {"t", "u", "v"}:
             f.write(
@@ -201,7 +201,7 @@  def genptr_decl_new(f, tag, regtype, regid, regno):
                 f"hex_new_pred_value[insn->regno[{regno}]];\n"
             )
         else:
-            print("Bad register parse: ", regtype, regid)
+            hex_common.bad_register(regtype, regid)
     elif regtype == "O":
         if regid == "s":
             f.write(
@@ -218,9 +218,9 @@  def genptr_decl_new(f, tag, regtype, regid, regno):
                     f"tcg_constant_tl({regtype}{regid}N_num);\n"
                 )
         else:
-            print("Bad register parse: ", regtype, regid)
+            hex_common.bad_register(regtype, regid)
     else:
-        print("Bad register parse: ", regtype, regid)
+        hex_common.bad_register(regtype, regid)
 
 
 def genptr_decl_opn(f, tag, regtype, regid, toss, numregs, i):
@@ -232,9 +232,9 @@  def genptr_decl_opn(f, tag, regtype, regid, toss, numregs, i):
         elif hex_common.is_new_val(regtype, regid, tag):
             genptr_decl_new(f, tag, regtype, regid, i)
         else:
-            print("Bad register parse: ", regtype, regid, toss, numregs)
+            hex_common.bad_register(regtype, regid, toss, numregs)
     else:
-        print("Bad register parse: ", regtype, regid, toss, numregs)
+        hex_common.bad_register(regtype, regid, toss, numregs)
 
 
 def genptr_decl_imm(f, immlett):
@@ -266,7 +266,7 @@  def genptr_src_read(f, tag, regtype, regid):
                     f"hex_gpr[{regtype}{regid}N]);\n"
                 )
         elif regid not in {"s", "t", "u", "v"}:
-            print("Bad register parse: ", regtype, regid)
+            hex_common.bad_register(regtype, regid)
     elif regtype == "P":
         if regid == "x":
             f.write(
@@ -274,7 +274,7 @@  def genptr_src_read(f, tag, regtype, regid):
                 f"hex_pred[{regtype}{regid}N]);\n"
             )
         elif regid not in {"s", "t", "u", "v"}:
-            print("Bad register parse: ", regtype, regid)
+            hex_common.bad_register(regtype, regid)
     elif regtype == "C":
         if regid == "ss":
             f.write(
@@ -287,10 +287,10 @@  def genptr_src_read(f, tag, regtype, regid):
                 f"{regtype}{regid}V);\n"
             )
         else:
-            print("Bad register parse: ", regtype, regid)
+            hex_common.bad_register(regtype, regid)
     elif regtype == "M":
         if regid != "u":
-            print("Bad register parse: ", regtype, regid)
+            hex_common.bad_register(regtype, regid)
     elif regtype == "V":
         if regid in {"uu", "vv", "xx"}:
             f.write(f"    tcg_gen_gvec_mov(MO_64, {regtype}{regid}V_off,\n")
@@ -311,7 +311,7 @@  def genptr_src_read(f, tag, regtype, regid):
             f.write(f"        vreg_src_off(ctx, {regtype}{regid}N),\n")
             f.write("        sizeof(MMVector), sizeof(MMVector));\n")
         else:
-            print("Bad register parse: ", regtype, regid)
+            hex_common.bad_register(regtype, regid)
     elif regtype == "Q":
         if regid in {"s", "t", "u", "v"}:
             if not hex_common.skip_qemu_helper(tag):
@@ -326,23 +326,23 @@  def genptr_src_read(f, tag, regtype, regid):
             )
             f.write("        sizeof(MMQReg), sizeof(MMQReg));\n")
         else:
-            print("Bad register parse: ", regtype, regid)
+            hex_common.bad_register(regtype, regid)
     else:
-        print("Bad register parse: ", regtype, regid)
+        hex_common.bad_register(regtype, regid)
 
 
 def genptr_src_read_new(f, regtype, regid):
     if regtype == "N":
         if regid not in {"s", "t"}:
-            print("Bad register parse: ", regtype, regid)
+            hex_common.bad_register(regtype, regid)
     elif regtype == "P":
         if regid not in {"t", "u", "v"}:
-            print("Bad register parse: ", regtype, regid)
+            hex_common.bad_register(regtype, regid)
     elif regtype == "O":
         if regid != "s":
-            print("Bad register parse: ", regtype, regid)
+            hex_common.bad_register(regtype, regid)
     else:
-        print("Bad register parse: ", regtype, regid)
+        hex_common.bad_register(regtype, regid)
 
 
 def genptr_src_read_opn(f, regtype, regid, tag):
@@ -354,9 +354,9 @@  def genptr_src_read_opn(f, regtype, regid, tag):
         elif hex_common.is_new_val(regtype, regid, tag):
             genptr_src_read_new(f, regtype, regid)
         else:
-            print("Bad register parse: ", regtype, regid, toss, numregs)
+            hex_common.bad_register(regtype, regid, toss, numregs)
     else:
-        print("Bad register parse: ", regtype, regid, toss, numregs)
+        hex_common.bad_register(regtype, regid, toss, numregs)
 
 
 def gen_helper_call_opn(f, tag, regtype, regid, toss, numregs, i):
@@ -370,9 +370,9 @@  def gen_helper_call_opn(f, tag, regtype, regid, toss, numregs, i):
         elif hex_common.is_new_val(regtype, regid, tag):
             f.write(f"{regtype}{regid}N")
         else:
-            print("Bad register parse: ", regtype, regid, toss, numregs)
+            hex_common.bad_register(regtype, regid, toss, numregs)
     else:
-        print("Bad register parse: ", regtype, regid, toss, numregs)
+        hex_common.bad_register(regtype, regid, toss, numregs)
 
 
 def gen_helper_decl_imm(f, immlett):
@@ -399,7 +399,7 @@  def genptr_dst_write(f, tag, regtype, regid):
                 f"    gen_log_reg_write({regtype}{regid}N, " f"{regtype}{regid}V);\n"
             )
         else:
-            print("Bad register parse: ", regtype, regid)
+            hex_common.bad_register(regtype, regid)
     elif regtype == "P":
         if regid in {"d", "e", "x"}:
             f.write(
@@ -407,7 +407,7 @@  def genptr_dst_write(f, tag, regtype, regid):
                 f"{regtype}{regid}V);\n"
             )
         else:
-            print("Bad register parse: ", regtype, regid)
+            hex_common.bad_register(regtype, regid)
     elif regtype == "C":
         if regid == "dd":
             f.write(
@@ -420,9 +420,9 @@  def genptr_dst_write(f, tag, regtype, regid):
                 f"{regtype}{regid}V);\n"
             )
         else:
-            print("Bad register parse: ", regtype, regid)
+            hex_common.bad_register(regtype, regid)
     else:
-        print("Bad register parse: ", regtype, regid)
+        hex_common.bad_register(regtype, regid)
 
 
 def genptr_dst_write_ext(f, tag, regtype, regid, newv="EXT_DFL"):
@@ -438,12 +438,12 @@  def genptr_dst_write_ext(f, tag, regtype, regid, newv="EXT_DFL"):
                 f"{regtype}{regid}N, {newv});\n"
             )
         elif regid not in {"dd", "d", "x"}:
-            print("Bad register parse: ", regtype, regid)
+            hex_common.bad_register(regtype, regid)
     elif regtype == "Q":
         if regid not in {"d", "e", "x"}:
-            print("Bad register parse: ", regtype, regid)
+            hex_common.bad_register(regtype, regid)
     else:
-        print("Bad register parse: ", regtype, regid)
+        hex_common.bad_register(regtype, regid)
 
 
 def genptr_dst_write_opn(f, regtype, regid, tag):
@@ -466,7 +466,7 @@  def genptr_dst_write_opn(f, regtype, regid, tag):
         else:
             genptr_dst_write(f, tag, regtype, regid)
     else:
-        print("Bad register parse: ", regtype, regid, toss, numregs)
+        hex_common.bad_register(regtype, regid, toss, numregs)
 
 
 ##
@@ -530,7 +530,7 @@  def gen_tcg_func(f, tag, regs, imms):
             elif hex_common.is_new_val(regtype, regid, tag):
                 declared.append(f"{regtype}{regid}N")
             else:
-                print("Bad register parse: ", regtype, regid, toss, numregs)
+                hex_common.bad_register(regtype, regid, toss, numregs)
 
         ## Handle immediates
         for immlett, bits, immshift in imms:
diff --git a/target/hexagon/hex_common.py b/target/hexagon/hex_common.py
index 40f28ca933..4da6c1504a 100755
--- a/target/hexagon/hex_common.py
+++ b/target/hexagon/hex_common.py
@@ -30,6 +30,9 @@ 
 overrides = {}  # tags with helper overrides
 idef_parser_enabled = {}  # tags enabled for idef-parser
 
+def bad_register(*args):
+    args_str = ", ".join(map(str, args))
+    raise Exception(f"Bad register parse: {args_str}")
 
 # We should do this as a hash for performance,
 # but to keep order let's keep it as a list.