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[PATCH]: New relocs and ELF ABI flags for HC11/HC12
- From: Stephane Carrez <stcarrez at nerim dot fr>
- To: binutils at sources dot redhat dot com
- Cc: gdb-patches at sources dot redhat dot com
- Date: Tue, 13 Aug 2002 17:03:47 +0200
- Subject: [PATCH]: New relocs and ELF ABI flags for HC11/HC12
Hi!
I've committed on mainline this patch to add ELF ABI flags to HC11/HC12
and new relocs. The elf_flags are used to check coherency of objects
files (compiled with 16-bit int or 32-bit int; 32-bit double or 64-bit double).
The symbol flags are used by gdb to correctly compute stack frames (identify
interrupt handlers and functions using call/rtc calling convention).
This patch concerns the common part gdb/binutils in include/elf.
Stephane
2002-08-13 Stephane Carrez <stcarrez@nerim.fr>
* m68hc11.h (E_M68HC12_BANKS, E_M68HC11_I32, E_M68HC11_F64,
EF_M68HC11_ABI): Define for ABI specification.
(STO_M68HC12_FAR, STO_M68HC12_INTERRUPT): Symbol flags for
linker and debugger.
(R_M68HC11_24, R_M68HC11_LO16, R_M68HC11_PAGE): New relocs.
(R_M68HC11_RL_JUMP, R_M68HC11_RL_GROUP): New reloc for linker
relaxation.
Index: m68hc11.h
===================================================================
RCS file: /cvs/src/src/include/elf/m68hc11.h,v
retrieving revision 1.2
diff -u -p -r1.2 m68hc11.h
--- m68hc11.h 14 Mar 2001 02:27:44 -0000 1.2
+++ m68hc11.h 13 Aug 2002 12:56:50 -0000
@@ -1,5 +1,5 @@
/* m68hc11 & m68hc12 ELF support for BFD.
- Copyright 1999, 2000 Free Software Foundation, Inc.
+ Copyright 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
This file is part of BFD, the Binary File Descriptor library.
@@ -37,6 +37,41 @@ START_RELOC_NUMBERS (elf_m68hc11_reloc_t
/* These are GNU extensions to enable C++ vtable garbage collection. */
RELOC_NUMBER (R_M68HC11_GNU_VTINHERIT, 9)
RELOC_NUMBER (R_M68HC11_GNU_VTENTRY, 10)
+
+ RELOC_NUMBER (R_M68HC11_24, 11)
+ RELOC_NUMBER (R_M68HC11_LO16, 12)
+ RELOC_NUMBER (R_M68HC11_PAGE, 13)
+
+ /* GNU extension for linker relaxation.
+ Mark beginning of a jump instruction (any form). */
+ RELOC_NUMBER (R_M68HC11_RL_JUMP, 20)
+
+ /* Mark beginning of Gcc relaxation group instruction. */
+ RELOC_NUMBER (R_M68HC11_RL_GROUP, 21)
END_RELOC_NUMBERS (R_M68HC11_max)
+/* Processor specific flags for the ELF header e_flags field. */
+
+/* ABI identification. */
+#define EF_M68HC11_ABI 0x00000000F
+
+/* Integers are 32-bit long. */
+#define E_M68HC11_I32 0x000000001
+
+/* Doubles are 64-bit long. */
+#define E_M68HC11_F64 0x000000002
+
+/* Uses 68HC12 memory banks. */
+#define E_M68HC12_BANKS 0x000000004
+
+
+/* Special values for the st_other field in the symbol table. These
+ are used for 68HC12 to identify far functions (must be called with
+ 'call' and returns with 'rtc'). */
+#define STO_M68HC12_FAR 0x80
+
+/* Identify interrupt handlers. This is used by the debugger to
+ correctly compute the stack frame. */
+#define STO_M68HC12_INTERRUPT 0x40
+
#endif