Go: Return errors out of band

1 files changed, 3 insertions, 3 deletions

diff --git a/parse-opcodes b/parse-opcodes
index 79a1f0f..75351c5 100755
--- a/parse-opcodes
+++ b/parse-opcodes
@@ -780,7 +780,7 @@ def print_go_insn(name):
   funct3 = yank(m, 12, 3)
   csr = yank(m, 20, 12)
   funct7 = yank(m, 25, 7)
-  print '\t\treturn &inst{0x%x, 0x%x, %d, 0x%x}' % (opcode, funct3, signed(csr, 12), funct7)
+  print '\t\treturn &inst{0x%x, 0x%x, %d, 0x%x}, false' % (opcode, funct3, signed(csr, 12), funct7)
 
 def make_go():
   print '// Automatically generated by parse-opcodes'
@@ -800,13 +800,13 @@ def make_go():
   print '\tfunct7 uint32'
   print '}'
   print
-  print 'func encode(a obj.As) *inst {'
+  print 'func encode(a obj.As) (i *inst, err bool) {'
   print '\tswitch a {'
   for name in namelist:
     print_go_insn(name)
   print '\t}'
   print '\tlog.Fatalf("opcode: missing %v (bug in parse-opcodes)", a)'
-  print '\treturn nil'
+  print '\treturn nil, true'
   print '}'
 
 for line in sys.stdin: