Add support for the new R_AVR_LDI, R_AVR_6 and R_AVR_6_ADIW relocs for the

LDI, ADIW/SBIW and LDD/STD instructions.

3 files changed, 119 insertions, 18 deletions

diff --git a/bfd/ChangeLog b/bfd/ChangeLog
index cfebc74..0524c5b 100644
--- a/bfd/ChangeLog
+++ b/bfd/ChangeLog
@@ -1,3 +1,11 @@
+2004-12-22  Klaus Rudolph  <lts-rudolph@gmx.de>
+
+	* reloc.c: Add new relocs R_AVR_LDI, R_AVR_6, R_AVR_6_ADIW.
+	* bfd-in2.h: Regenerate.
+	* elf32-avr.c (elf_avr_nowto_table): Add the new relocs.
+	(avr_reloc_map): Likewise.
+	(avr_final_link_relocate): Likewise.
+
 2004-12-22  Alan Modra  <amodra@bigpond.net.au>
 
 	* elflink.c (_bfd_elf_merge_symbol): Treat old definitions from
diff --git a/bfd/bfd-in2.h b/bfd/bfd-in2.h
index 8f7a3d4..d6b6503 100644
--- a/bfd/bfd-in2.h
+++ b/bfd/bfd-in2.h
@@ -1686,10 +1686,10 @@ enum bfd_architecture
 #define bfd_mach_sh_dsp     0x2d
 #define bfd_mach_sh2a       0x2a
 #define bfd_mach_sh2a_nofpu 0x2b
-#define bfd_mach_sh2a_fake1 0x2a1
-#define bfd_mach_sh2a_fake2 0x2a2
-#define bfd_mach_sh2a_fake3 0x2a3
-#define bfd_mach_sh2a_fake4 0x2a4
+#define bfd_mach_sh2a_nofpu_or_sh4_nommu_nofpu 0x2a1
+#define bfd_mach_sh2a_nofpu_or_sh3_nommu 0x2a2
+#define bfd_mach_sh2a_or_sh4 0x2a3
+#define bfd_mach_sh2a_or_sh3e 0x2a4
 #define bfd_mach_sh2e       0x2e
 #define bfd_mach_sh3        0x30
 #define bfd_mach_sh3_nommu  0x31
@@ -3163,6 +3163,18 @@ value of SUBI insn.  */
 into 22 bits.  */
   BFD_RELOC_AVR_CALL,
 
+/* This is a 16 bit reloc for the AVR that stores all needed bits
+for absolute addressing with ldi with overflow check to linktime  */
+  BFD_RELOC_AVR_LDI,
+
+/* This is a 6 bit reloc for the AVR that stores offset for ldd/std
+instructions  */
+  BFD_RELOC_AVR_6,
+
+/* This is a 6 bit reloc for the AVR that stores offset for adiw/sbiw
+instructions  */
+  BFD_RELOC_AVR_6_ADIW,
+
 /* Direct 12 bit.  */
   BFD_RELOC_390_12,
 
diff --git a/bfd/elf32-avr.c b/bfd/elf32-avr.c
index 1026bfb..9b0e8b5 100644
--- a/bfd/elf32-avr.c
+++ b/bfd/elf32-avr.c
@@ -3,21 +3,21 @@
    Free Software Foundation, Inc.
    Contributed by Denis Chertykov <denisc@overta.ru>
 
-This file is part of BFD, the Binary File Descriptor library.
+   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 2 of the License, or
-(at your option) any later version.
+   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 2 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.
+   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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+   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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
 
 #include "bfd.h"
 #include "sysdep.h"
@@ -323,12 +323,57 @@ static reloc_howto_type elf_avr_howto_table[] =
 	 23,			/* bitsize */
 	 FALSE,			/* pc_relative */
 	 0,			/* bitpos */
-	 complain_overflow_dont, /* complain_on_overflow */
+	 complain_overflow_dont,/* complain_on_overflow */
 	 bfd_elf_generic_reloc,	/* special_function */
 	 "R_AVR_CALL",		/* name */
 	 FALSE,			/* partial_inplace */
 	 0xffffffff,		/* src_mask */
 	 0xffffffff,		/* dst_mask */
+	 FALSE),			/* pcrel_offset */
+  /* A 16 bit absolute relocation of 16 bit address.
+     For LDI command.  */
+  HOWTO (R_AVR_LDI,		/* type */
+	 0,			/* rightshift */
+	 1,			/* size (0 = byte, 1 = short, 2 = long) */
+	 16,			/* bitsize */
+	 FALSE,			/* pc_relative */
+	 0,			/* bitpos */
+	 complain_overflow_dont,/* complain_on_overflow */
+	 bfd_elf_generic_reloc,	/* special_function */
+	 "R_AVR_LDI",		/* name */
+	 FALSE,			/* partial_inplace */
+	 0xffff,		/* src_mask */
+	 0xffff,		/* dst_mask */
+	 FALSE),		/* pcrel_offset */
+  /* A 6 bit absolute relocation of 6 bit offset.
+     For ldd/sdd command.  */
+  HOWTO (R_AVR_6,		/* type */
+	 0,			/* rightshift */
+	 0,			/* size (0 = byte, 1 = short, 2 = long) */
+	 6,			/* bitsize */
+	 FALSE,			/* pc_relative */
+	 0,			/* bitpos */
+	 complain_overflow_dont,/* complain_on_overflow */
+	 bfd_elf_generic_reloc,	/* special_function */
+	 "R_AVR_6",		/* name */
+	 FALSE,			/* partial_inplace */
+	 0xffff,		/* src_mask */
+	 0xffff,		/* dst_mask */
+	 FALSE),		/* pcrel_offset */
+  /* A 6 bit absolute relocation of 6 bit offset.
+     For sbiw/adiw command.  */
+  HOWTO (R_AVR_6_ADIW,		/* type */
+	 0,			/* rightshift */
+	 0,			/* size (0 = byte, 1 = short, 2 = long) */
+	 6,			/* bitsize */
+	 FALSE,			/* pc_relative */
+	 0,			/* bitpos */
+	 complain_overflow_dont,/* complain_on_overflow */
+	 bfd_elf_generic_reloc,	/* special_function */
+	 "R_AVR_6_ADIW",	/* name */
+	 FALSE,			/* partial_inplace */
+	 0xffff,		/* src_mask */
+	 0xffff,		/* dst_mask */
 	 FALSE)			/* pcrel_offset */
 };
 
@@ -360,7 +405,10 @@ struct avr_reloc_map
   { BFD_RELOC_AVR_LO8_LDI_PM_NEG,   R_AVR_LO8_LDI_PM_NEG },
   { BFD_RELOC_AVR_HI8_LDI_PM_NEG,   R_AVR_HI8_LDI_PM_NEG },
   { BFD_RELOC_AVR_HH8_LDI_PM_NEG,   R_AVR_HH8_LDI_PM_NEG },
-  { BFD_RELOC_AVR_CALL,             R_AVR_CALL }
+  { BFD_RELOC_AVR_CALL,             R_AVR_CALL },
+  { BFD_RELOC_AVR_LDI,              R_AVR_LDI  },
+  { BFD_RELOC_AVR_6,                R_AVR_6    },
+  { BFD_RELOC_AVR_6_ADIW,           R_AVR_6_ADIW }
 };
 
 static reloc_howto_type *
@@ -561,6 +609,39 @@ avr_final_link_relocate (howto, input_bfd, input_section,
       bfd_put_16 (input_bfd, x, contents);
       break;
 
+    case R_AVR_LDI:
+      contents += rel->r_offset;
+      srel = (bfd_signed_vma) relocation + rel->r_addend;
+      if ((srel & 0xffff) > 255)
+	/* Remove offset for data/eeprom section.  */
+	return bfd_reloc_overflow;
+      x = bfd_get_16 (input_bfd, contents);
+      x = (x & 0xf0f0) | (srel & 0xf) | ((srel << 4) & 0xf00);
+      bfd_put_16 (input_bfd, x, contents);
+      break;
+
+    case R_AVR_6:
+      contents += rel->r_offset;
+      srel = (bfd_signed_vma) relocation + rel->r_addend;
+      if (((srel & 0xffff) > 63) || (srel < 0))
+	/* Remove offset for data/eeprom section.  */
+	return bfd_reloc_overflow;
+      x = bfd_get_16 (input_bfd, contents);
+      x = (x & 0xd3f8) | ((srel & 7) | ((srel & (3 << 3)) << 7) | ((srel & (1 << 5)) << 8));
+      bfd_put_16 (input_bfd, x, contents);
+      break;
+
+    case R_AVR_6_ADIW:
+      contents += rel->r_offset;
+      srel = (bfd_signed_vma) relocation + rel->r_addend;
+      if (((srel & 0xffff) > 63) || (srel < 0))
+	/* Remove offset for data/eeprom section.  */
+	return bfd_reloc_overflow;
+      x = bfd_get_16 (input_bfd, contents);
+      x = (x & 0xff30) | (srel & 0xf) | ((srel & 0x30) << 2); 
+      bfd_put_16 (input_bfd, x, contents);
+      break;
+
     case R_AVR_HI8_LDI:
       contents += rel->r_offset;
       srel = (bfd_signed_vma) relocation + rel->r_addend;