sdcc-3.9.0 fork implementing GNU assembler syntax

This fork aims to provide better support for stm8-binutils

1 files changed, 163 insertions, 0 deletions

diff --git a/support/sdbinutils/bfd/cpu-avr.c b/support/sdbinutils/bfd/cpu-avr.c
new file mode 100644
index 0000000..1660282
--- /dev/null
+++ b/support/sdbinutils/bfd/cpu-avr.c
@@ -0,0 +1,163 @@
+/* BFD library support routines for the AVR architecture.
+   Copyright (C) 1999-2018 Free Software Foundation, Inc.
+   Contributed by Denis Chertykov <denisc@overta.ru>
+
+   This file is part of BFD, the Binary File Descriptor library.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
+   MA 02110-1301, USA.  */
+
+#include "sysdep.h"
+#include "bfd.h"
+#include "libbfd.h"
+
+/* This routine is provided two arch_infos and works out which AVR
+   machine which would be compatible with both and returns a pointer
+   to its info structure.  */
+
+static const bfd_arch_info_type *
+compatible (const bfd_arch_info_type * a,
+	    const bfd_arch_info_type * b)
+{
+  /* If a & b are for different architectures we can do nothing.  */
+  if (a->arch != b->arch)
+    return NULL;
+
+  if (a->mach == b->mach)
+    return a;
+
+  /* avr-6 is compatible only with itself as its call convention is not
+     compatible with other avr (the mcu saves the return address on 3 bytes
+     instead of 2).  */
+  if (a->mach == bfd_mach_avr6 || b->mach == bfd_mach_avr6)
+    return NULL;
+
+  if (a->mach < bfd_mach_avr6 && b->mach < bfd_mach_avr6)
+    {
+      /* Special case for ATmega[16]03 (avr:3) and ATmega83 (avr:4).  */
+      if ((a->mach == bfd_mach_avr3 && b->mach == bfd_mach_avr4)
+	 || (a->mach == bfd_mach_avr4 && b->mach == bfd_mach_avr3))
+       return NULL;
+
+      if (a->mach <= b->mach)
+       return b;
+
+      if (a->mach >= b->mach)
+       return a;
+    }
+
+  if (a->mach == bfd_mach_avr2 && b->mach == bfd_mach_avr25)
+    return a;
+  if (a->mach == bfd_mach_avr25 && b->mach == bfd_mach_avr2)
+    return b;
+
+  if (a->mach == bfd_mach_avr3 && b->mach == bfd_mach_avr31)
+    return a;
+  if (a->mach == bfd_mach_avr31 && b->mach == bfd_mach_avr3)
+    return b;
+  if (a->mach == bfd_mach_avr3 && b->mach == bfd_mach_avr35)
+    return a;
+  if (a->mach == bfd_mach_avr35 && b->mach == bfd_mach_avr3)
+    return b;
+
+  if (a->mach == bfd_mach_avr5 && b->mach == bfd_mach_avr51)
+    return a;
+  if (a->mach == bfd_mach_avr51 && b->mach == bfd_mach_avr5)
+    return b;
+
+  return NULL;
+}
+
+#define N(addr_bits, machine, print, default, next)		\
+{								\
+  8,				/* 8 bits in a word.  */	\
+  addr_bits,			/* bits in an address.  */	\
+  8,				/* 8 bits in a byte.  */	\
+  bfd_arch_avr,							\
+  machine,			/* Machine number.  */		\
+  "avr",			/* Architecture name.   */	\
+  print,			/* Printable name.  */		\
+  1,				/* Section align power.  */	\
+  default,			/* Is this the default ?  */	\
+  compatible,							\
+  bfd_default_scan,						\
+  bfd_arch_default_fill,					\
+  next								\
+}
+
+static const bfd_arch_info_type arch_info_struct[] =
+{
+  /* Assembler only.  */
+  N (16, bfd_mach_avr1, "avr:1", FALSE, & arch_info_struct[1]),
+
+  /* Classic, <= 8K.  */
+  N (16, bfd_mach_avr2, "avr:2", FALSE, & arch_info_struct[2]),
+
+  /* Classic + MOVW, <= 8K.  */
+  N (16, bfd_mach_avr25, "avr:25", FALSE, & arch_info_struct[3]),
+
+  /* Classic, > 8K, <= 64K.  */
+  /* TODO:  addr_bits should be 16, but set to 22 for some following
+     version of GCC (from 4.3) for backward compatibility.  */
+  N (22, bfd_mach_avr3, "avr:3", FALSE, & arch_info_struct[4]),
+
+  /* Classic, == 128K.  */
+  N (22, bfd_mach_avr31, "avr:31", FALSE, & arch_info_struct[5]),
+
+  /* Classic + MOVW + JMP/CALL, > 8K, <= 64K. */
+  N (16, bfd_mach_avr35, "avr:35", FALSE, & arch_info_struct[6]),
+
+  /* Enhanced, <= 8K.  */
+  N (16, bfd_mach_avr4, "avr:4", FALSE, & arch_info_struct[7]),
+
+  /* Enhanced, > 8K, <= 64K.  */
+  /* TODO:  addr_bits should be 16, but set to 22 for some following
+     version of GCC (from 4.3) for backward compatibility.  */
+  N (22, bfd_mach_avr5, "avr:5", FALSE, & arch_info_struct[8]),
+
+  /* Enhanced, == 128K.  */
+  N (22, bfd_mach_avr51, "avr:51", FALSE, & arch_info_struct[9]),
+
+  /* 3-Byte PC.  */
+  N (22, bfd_mach_avr6, "avr:6", FALSE, & arch_info_struct[10]),
+
+  /* Tiny core (AVR Tiny).  */
+  N (16, bfd_mach_avrtiny, "avr:100", FALSE, & arch_info_struct[11]),
+
+  /* Xmega 1.  */
+  N (24, bfd_mach_avrxmega1, "avr:101", FALSE, & arch_info_struct[12]),
+
+  /* Xmega 2.  */
+  N (24, bfd_mach_avrxmega2, "avr:102", FALSE, & arch_info_struct[13]),
+
+  /* Xmega 3.  */
+  N (24, bfd_mach_avrxmega3, "avr:103", FALSE, & arch_info_struct[14]),
+
+  /* Xmega 4.  */
+  N (24, bfd_mach_avrxmega4, "avr:104", FALSE, & arch_info_struct[15]),
+
+  /* Xmega 5.  */
+  N (24, bfd_mach_avrxmega5, "avr:105", FALSE, & arch_info_struct[16]),
+
+  /* Xmega 6.  */
+  N (24, bfd_mach_avrxmega6, "avr:106", FALSE, & arch_info_struct[17]),
+
+  /* Xmega 7.  */
+  N (24, bfd_mach_avrxmega7, "avr:107", FALSE, NULL)
+
+};
+
+const bfd_arch_info_type bfd_avr_arch =
+  N (16, bfd_mach_avr2, "avr", TRUE, & arch_info_struct[0]);