fa76c6f9ba
On PowerPC, this is needed in order for the debugger to find out the memory offset where the kernel image was loaded on the remote target. This fixes symbol resolution when remote debugging a PowerPC kernel. Reviewed by: cem Differential Revision: https://reviews.freebsd.org/D22767
137 lines
3.4 KiB
C
137 lines
3.4 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2006 Marcel Moolenaar
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _MACHINE_GDB_MACHDEP_H_
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#define _MACHINE_GDB_MACHDEP_H_
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#ifdef BOOKE
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#define PPC_GDB_NREGS0 1
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#define PPC_GDB_NREGS4 (70 + 1)
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#define PPC_GDB_NREGS8 (1 + 32)
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#define PPC_GDB_NREGS16 0
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#else
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/*
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* 0 - 32*GPR(4/8)
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* 32 - 32*FPR(8)
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* 64 - PC, PS (4/8)
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* 66 - CR (4)
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* 67 - LR, CTR (4/8)
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* 69 - XER, FPSCR (4)
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* 71 - 32*VR(16)
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* 103 - VSCR, VRSAVE (4)
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*/
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#define PPC_REGNUM_R0 0
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#define PPC_REGNUM_R31 (PPC_REGNUM_R0 + 31)
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#define PPC_REGNUM_FR0 32
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#define PPC_REGNUM_FR31 (PPC_REGNUM_FR0 + 31)
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#define PPC_REGNUM_PC 64
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#define PPC_REGNUM_PS 65
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#define PPC_REGNUM_CR 66
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#define PPC_REGNUM_LR 67
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#define PPC_REGNUM_CTR 68
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#define PPC_REGNUM_XER 69
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#define PPC_REGNUM_FPSCR 70
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#define PPC_REGNUM_VR0 71
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#define PPC_REGNUM_VR31 (PPC_REGNUM_VR0 + 31)
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#define PPC_GDB_NREGS0 0
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#ifdef __powerpc64__
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#define PPC_GDB_NREGS4 5
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#define PPC_GDB_NREGS8 (64 + 4)
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#else
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#define PPC_GDB_NREGS4 (32 + 7 + 2)
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#define PPC_GDB_NREGS8 32
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#endif
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#define PPC_GDB_NREGS16 32
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#endif
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#define GDB_NREGS (PPC_GDB_NREGS0 + PPC_GDB_NREGS4 + \
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PPC_GDB_NREGS8 + PPC_GDB_NREGS16)
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#define GDB_REG_PC 64
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#define GDB_BUFSZ (PPC_GDB_NREGS4 * 8 + \
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PPC_GDB_NREGS8 * 16 + \
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PPC_GDB_NREGS16 * 32)
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static __inline size_t
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gdb_cpu_regsz(int regnum)
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{
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#ifdef BOOKE
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if (regnum == 70)
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return (0);
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if (regnum == 71 || regnum >= 73)
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return (8);
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#else
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#ifdef __powerpc64__
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if ((regnum >= PPC_REGNUM_R0 && regnum <= PPC_REGNUM_PS) ||
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regnum == PPC_REGNUM_LR || regnum == PPC_REGNUM_CTR)
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return (8);
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#else
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if (regnum >= PPC_REGNUM_FR0 && regnum <= PPC_REGNUM_FR31)
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return (8);
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#endif
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if (regnum >= PPC_REGNUM_VR0 && regnum <= PPC_REGNUM_VR31)
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return (16);
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#endif
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return (4);
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}
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static __inline int
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gdb_cpu_query(void)
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{
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return (0);
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}
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static __inline void *
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gdb_begin_write(void)
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{
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return (NULL);
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}
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static __inline void
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gdb_end_write(void *arg __unused)
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{
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}
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void *gdb_cpu_getreg(int, size_t *);
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void gdb_cpu_setreg(int, void *);
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int gdb_cpu_signal(int, int);
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void gdb_cpu_do_offsets(void);
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#endif /* !_MACHINE_GDB_MACHDEP_H_ */
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