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authorSandra Loosemore <sandra@codesourcery.com>2013-05-07 01:09:29 +0000
committerSandra Loosemore <sandra@codesourcery.com>2013-05-07 01:09:29 +0000
commita1217d97c4b0449d052fad3d2df2ab58b48f918c (patch)
tree98066c44279440ecd359a4ed516c02afd22a9eae /gdb/nios2-tdep.h
parent3b7bacacfd7689e3dc00b8eea809eb7a13010ab9 (diff)
downloadbinutils-gdb-a1217d97c4b0449d052fad3d2df2ab58b48f918c.tar.gz
2013-05-06 Sandra Loosemore <sandra@codesourcery.com>
Andrew Jenner <andrew@codesourcery.com> Chung-Lin Tang <cltang@codesourcery.com> Julian Brown <julian@codesourcery.com> Based on the nios2-elf port from Altera Corporation. gdb/ * Makefile.in (ALL_TARGET_OBS): Add nios2-tdep.o and nios2-linux-tdep.o. (HFILES_NO_SRCDIR): Add nios2-tdep.h. (ALLDEPFILES): Add nios2-tdep.c and nios2-linux-tdep.c. * configure.tgt: Add nios2*-*-linux* and nios2*-*-* targets. * nios2-tdep.h: New. * nios2-tdep.c: New. * nios2-linux-tdep.c: New. * features/Makefile (WHICH): Add nios2-linux. (nios2-linux-expedite): Set. * features/nios2-cpu.xml: New. * features/nios2.xml: New. * features/nios2-linux.xml: New. * features/nios2.c: New (autogenerated). * features/nios2-linux.c: New (autogenerated). * regformats/nios2-linux.dat: New (autogenerated). * NEWS (Changes since GDB 7.6): Add new Nios II targets and commands. gdb/doc/ * gdb.texinfo (Nios II): New section. (Nios II Features): New section.
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diff --git a/gdb/nios2-tdep.h b/gdb/nios2-tdep.h
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+/* Target-dependent header for the Nios II architecture, for GDB.
+ Copyright (C) 2012-2013 Free Software Foundation, Inc.
+ Contributed by Mentor Graphics, Inc.
+
+ This file is part of GDB.
+
+ 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, see <http://www.gnu.org/licenses/>. */
+
+#ifndef NIOS2_TDEP_H
+#define NIOS2_TDEP_H
+
+/* Registers. */
+#define NIOS2_Z_REGNUM 0 /* Zero */
+#define NIOS2_R2_REGNUM 2 /* used for return value */
+#define NIOS2_R3_REGNUM 3 /* used for return value */
+/* Used for hidden zero argument to store ptr to struct return value. */
+#define NIOS2_R4_REGNUM 4
+#define NIOS2_R7_REGNUM 7
+#define NIOS2_GP_REGNUM 26 /* Global Pointer */
+#define NIOS2_SP_REGNUM 27 /* Stack Pointer */
+#define NIOS2_FP_REGNUM 28 /* Frame Pointer */
+#define NIOS2_EA_REGNUM 29 /* Exception address */
+#define NIOS2_BA_REGNUM 30 /* Breakpoint return address */
+#define NIOS2_RA_REGNUM 31 /* Return address */
+#define NIOS2_PC_REGNUM 32
+
+/* Control registers. */
+#define NIOS2_STATUS_REGNUM 33
+#define NIOS2_ESTATUS_REGNUM 34
+#define NIOS2_BSTATUS_REGNUM 35
+#define NIOS2_IENABLE_REGNUM 36
+#define NIOS2_IPENDING_REGNUM 37
+#define NIOS2_CPUID_REGNUM 38
+#define NIOS2_EXCEPTION_REGNUM 40
+#define NIOS2_PTEADDR_REGNUM 41
+#define NIOS2_TLBACC_REGNUM 42
+#define NIOS2_TLBMISC_REGNUM 43
+#define NIOS2_ECCINJ_REGNUM 44
+#define NIOS2_BADADDR_REGNUM 45
+#define NIOS2_CONFIG_REGNUM 46
+#define NIOS2_MPUBASE_REGNUM 47
+#define NIOS2_MPUACC_REGNUM 48
+
+/* R4-R7 are used for argument passing. */
+#define NIOS2_FIRST_ARGREG NIOS2_R4_REGNUM
+#define NIOS2_LAST_ARGREG NIOS2_R7_REGNUM
+
+/* Number of all registers. */
+#define NIOS2_NUM_REGS 49
+
+/* Size of an instruction, in bytes. */
+#define NIOS2_OPCODE_SIZE 4
+
+/* Target-dependent structure in gdbarch. */
+struct gdbarch_tdep
+{
+ /* Assumes FRAME is stopped at a syscall (trap) instruction; returns
+ the expected next PC. */
+ CORE_ADDR (*syscall_next_pc) (struct frame_info *frame);
+
+ /* Offset to PC value in jump buffer.
+ If this is negative, longjmp support will be disabled. */
+ int jb_pc;
+};
+
+extern struct target_desc *tdesc_nios2_linux;
+extern struct target_desc *tdesc_nios2;
+
+#endif /* NIOS2_TDEP_H */