2008-02-11 Maxim Grigoriev <maxim2405@gmail.com>
* gdbserver/Makefile.in (SFILES): Add linux-xtensa-low.c. (clean): Add reg-xtensa.c. (linux-xtensa-low.o, reg-xtensa.o, reg-xtensa.c): New dependencies. * gdbserver/configure.srv (xtensa*-*-linux*) New target. * gdbserver/linux-xtensa-low.c: New. * gdbserver/xtensa-xtregs.c: New.
This commit is contained in:
Maxim Grigoriev
parent
94a0e87711
commit
1525d5452d
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@ -1,3 +1,12 @@
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2008-02-11 Maxim Grigoriev <maxim2405@gmail.com>
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* gdbserver/Makefile.in (SFILES): Add linux-xtensa-low.c.
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(clean): Add reg-xtensa.c.
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(linux-xtensa-low.o, reg-xtensa.o, reg-xtensa.c): New dependencies.
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* gdbserver/configure.srv (xtensa*-*-linux*) New target.
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* gdbserver/linux-xtensa-low.c: New.
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* gdbserver/xtensa-xtregs.c: New.
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2008-02-01 Pedro Alves <pedro_alves@portugalmail.pt>
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* hostio.c: Don't include errno.h.
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@ -129,6 +129,7 @@ SFILES= $(srcdir)/gdbreplay.c $(srcdir)/inferiors.c \
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$(srcdir)/linux-ppc-low.c $(srcdir)/linux-ppc64-low.c \
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$(srcdir)/linux-s390-low.c \
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$(srcdir)/linux-sh-low.c $(srcdir)/linux-x86-64-low.c \
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$(srcdir)/linux-xtensa-low.c \
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$(srcdir)/win32-arm-low.c $(srcdir)/win32-i386-low.c \
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$(srcdir)/win32-low.c $(srcdir)/wincecompat.c \
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$(srcdir)/hostio.c $(srcdir)/hostio-errno.c
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@ -218,7 +219,7 @@ clean:
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rm -f gdbserver$(EXEEXT) gdbreplay$(EXEEXT) core make.log
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rm -f reg-arm.c reg-i386.c reg-ia64.c reg-m32r.c reg-m68k.c
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rm -f reg-ppc.c reg-sh.c reg-spu.c reg-x86-64.c reg-i386-linux.c
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rm -f reg-cris.c reg-crisv32.c reg-x86-64-linux.c
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rm -f reg-cris.c reg-crisv32.c reg-x86-64-linux.c reg-xtensa.c
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rm -f arm-with-iwmmxt.c mips-linux.c mips64-linux.c
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rm -f powerpc-32.c powerpc-64.c powerpc-e500.c
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rm -f xml-builtin.c stamp-xml target.xml
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@ -316,6 +317,7 @@ linux-s390-low.o: linux-s390-low.c $(linux_low_h) $(server_h)
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linux-sh-low.o: linux-sh-low.c $(linux_low_h) $(server_h)
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linux-x86-64-low.o: linux-x86-64-low.c $(linux_low_h) $(server_h) \
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$(gdb_proc_service_h)
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linux-xtensa-low.o: linux-xtensa-low.c xtensa-xtregs.c $(linux_low_h) $(server_h)
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win32_low_h = $(srcdir)/win32-low.h
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@ -392,5 +394,7 @@ reg-x86-64.c : $(srcdir)/../regformats/reg-x86-64.dat $(regdat_sh)
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reg-x86-64-linux.o : reg-x86-64-linux.c $(regdef_h)
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reg-x86-64-linux.c : $(srcdir)/../regformats/reg-x86-64-linux.dat $(regdat_sh)
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$(SHELL) $(regdat_sh) $(srcdir)/../regformats/reg-x86-64-linux.dat reg-x86-64-linux.c
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reg-xtensa.o : reg-xtensa.c $(regdef_h)
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reg-xtensa.c : $(srcdir)/../regformats/reg-xtensa.dat $(regdat_sh)
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$(SHELL) $(regdat_sh) $(srcdir)/../regformats/reg-xtensa.dat reg-xtensa.c
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# This is the end of "Makefile.in".
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@ -170,6 +170,10 @@ case "${target}" in
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srv_linux_usrregs=yes
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srv_linux_thread_db=yes
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;;
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xtensa*-*-linux*) srv_regobj=reg-xtensa.o
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srv_tgtobj="linux-low.o linux-xtensa-low.o"
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srv_linux_regsets=yes
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;;
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*) echo "Error: target not supported by gdbserver."
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exit 1
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;;
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@ -0,0 +1,187 @@
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/* GNU/Linux/Xtensa specific low level interface, for the remote server for GDB.
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Copyright 2007, 2008 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include "server.h"
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#include "linux-low.h"
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#include <sys/ptrace.h>
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#include <xtensa-config.h>
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#include "xtensa-xtregs.c"
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enum regnum {
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R_PC=0, R_PS,
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R_LBEG, R_LEND, R_LCOUNT,
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R_SAR,
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R_WS, R_WB,
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R_A0 = 64
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};
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static void
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xtensa_fill_gregset (void *buf)
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{
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elf_greg_t* rset = (elf_greg_t*)buf;
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int ar0_regnum;
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char *ptr;
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int i;
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/* Take care of AR registers. */
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ar0_regnum = find_regno ("ar0");
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ptr = (char*)&rset[R_A0];
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for (i = ar0_regnum; i < ar0_regnum + XCHAL_NUM_AREGS; i++)
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{
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collect_register (i, ptr);
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ptr += register_size(i);
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}
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/* Loop registers, if hardware has it. */
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#if XCHAL_HAVE_LOOP
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collect_register_by_name ("lbeg", (char*)&rset[R_LBEG]);
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collect_register_by_name ("lend", (char*)&rset[R_LEND]);
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collect_register_by_name ("lcount", (char*)&rset[R_LCOUNT]);
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#endif
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collect_register_by_name ("sar", (char*)&rset[R_SAR]);
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collect_register_by_name ("pc", (char*)&rset[R_PC]);
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collect_register_by_name ("ps", (char*)&rset[R_PS]);
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collect_register_by_name ("windowbase", (char*)&rset[R_WB]);
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collect_register_by_name ("windowstart", (char*)&rset[R_WS]);
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}
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static void
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xtensa_store_gregset (const void *buf)
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{
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const elf_greg_t* rset = (const elf_greg_t*)buf;
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int ar0_regnum;
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char *ptr;
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int i;
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/* Take care of AR registers. */
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ar0_regnum = find_regno ("ar0");
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ptr = (char *)&rset[R_A0];
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for (i = ar0_regnum; i < ar0_regnum + XCHAL_NUM_AREGS; i++)
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{
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supply_register (i, ptr);
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ptr += register_size(i);
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}
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/* Loop registers, if hardware has it. */
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#if XCHAL_HAVE_LOOP
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supply_register_by_name ("lbeg", (char*)&rset[R_LBEG]);
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supply_register_by_name ("lend", (char*)&rset[R_LEND]);
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supply_register_by_name ("lcount", (char*)&rset[R_LCOUNT]);
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#endif
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supply_register_by_name ("sar", (char*)&rset[R_SAR]);
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supply_register_by_name ("pc", (char*)&rset[R_PC]);
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supply_register_by_name ("ps", (char*)&rset[R_PS]);
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supply_register_by_name ("windowbase", (char*)&rset[R_WB]);
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supply_register_by_name ("windowstart", (char*)&rset[R_WS]);
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}
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/* Xtensa GNU/Linux PTRACE interface includes extended register set. */
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static void
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xtensa_fill_xtregset (void *buf)
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{
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const xtensa_regtable_t *ptr;
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for (ptr = xtensa_regmap_table; ptr->name; ptr++)
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{
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collect_register_by_name (ptr->name,
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(char*)buf + ptr->ptrace_offset);
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}
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}
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static void
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xtensa_store_xtregset (const void *buf)
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{
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const xtensa_regtable_t *ptr;
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for (ptr = xtensa_regmap_table; ptr->name; ptr++)
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{
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supply_register_by_name (ptr->name,
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(char*)buf + ptr->ptrace_offset);
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}
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}
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struct regset_info target_regsets[] = {
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{ PTRACE_GETREGS, PTRACE_SETREGS, sizeof (elf_gregset_t),
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GENERAL_REGS,
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xtensa_fill_gregset, xtensa_store_gregset },
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{ PTRACE_GETXTREGS, PTRACE_SETXTREGS, XTENSA_ELF_XTREG_SIZE,
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EXTENDED_REGS,
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xtensa_fill_xtregset, xtensa_store_xtregset },
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{ 0, 0, -1, -1, NULL, NULL }
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};
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#if XCHAL_HAVE_BE
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#define XTENSA_BREAKPOINT {0xd2,0x0f}
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#else
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#define XTENSA_BREAKPOINT {0x2d,0xf0}
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#endif
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static const unsigned char xtensa_breakpoint[] = XTENSA_BREAKPOINT;
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#define xtensa_breakpoint_len 2
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static CORE_ADDR
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xtensa_get_pc (void)
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{
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unsigned long pc;
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collect_register_by_name ("pc", &pc);
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return pc;
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}
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static void
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xtensa_set_pc (CORE_ADDR pc)
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{
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unsigned long newpc = pc;
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supply_register_by_name ("pc", &newpc);
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}
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static int
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xtensa_breakpoint_at (CORE_ADDR where)
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{
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unsigned long insn;
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(*the_target->read_memory) (where, (unsigned char *) &insn,
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xtensa_breakpoint_len);
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return memcmp((char *)&insn, xtensa_breakpoint, xtensa_breakpoint_len) == 0;
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}
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struct linux_target_ops the_low_target = {
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0,
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0,
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0,
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0,
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xtensa_get_pc,
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xtensa_set_pc,
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xtensa_breakpoint,
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xtensa_breakpoint_len,
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NULL,
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0,
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xtensa_breakpoint_at,
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};
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@ -0,0 +1,37 @@
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/* Table mapping between kernel xtregset and GDB register cache.
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Copyright 2007, 2008 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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typedef struct {
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int gdb_regnum;
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int gdb_offset;
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int ptrace_cp_offset;
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int ptrace_offset;
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int size;
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int coproc;
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int dbnum;
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char* name
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;} xtensa_regtable_t;
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#define XTENSA_ELF_XTREG_SIZE 0
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const xtensa_regtable_t xtensa_regmap_table[] = {
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/* gnum,gofs,cpofs,ofs,siz,cp, dbnum, name */
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{ 0 }
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};
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