diff options
author | Thomas Huth <thuth@redhat.com> | 2016-10-11 08:56:52 +0200 |
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committer | Thomas Huth <thuth@redhat.com> | 2016-12-20 21:52:12 +0100 |
commit | fcf5ef2ab52c621a4617ebbef36bf43b4003f4c0 (patch) | |
tree | 2b450d96b01455df8ed908bf8f26ddc388a03380 /target/arm/gdbstub.c | |
parent | 82ecffa8c050bf5bbc13329e9b65eac1caa5b55c (diff) |
Move target-* CPU file into a target/ folder
We've currently got 18 architectures in QEMU, and thus 18 target-xxx
folders in the root folder of the QEMU source tree. More architectures
(e.g. RISC-V, AVR) are likely to be included soon, too, so the main
folder of the QEMU sources slowly gets quite overcrowded with the
target-xxx folders.
To disburden the main folder a little bit, let's move the target-xxx
folders into a dedicated target/ folder, so that target-xxx/ simply
becomes target/xxx/ instead.
Acked-by: Laurent Vivier <laurent@vivier.eu> [m68k part]
Acked-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de> [tricore part]
Acked-by: Michael Walle <michael@walle.cc> [lm32 part]
Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com> [s390x part]
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com> [s390x part]
Acked-by: Eduardo Habkost <ehabkost@redhat.com> [i386 part]
Acked-by: Artyom Tarasenko <atar4qemu@gmail.com> [sparc part]
Acked-by: Richard Henderson <rth@twiddle.net> [alpha part]
Acked-by: Max Filippov <jcmvbkbc@gmail.com> [xtensa part]
Reviewed-by: David Gibson <david@gibson.dropbear.id.au> [ppc part]
Acked-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com> [crisµblaze part]
Acked-by: Guan Xuetao <gxt@mprc.pku.edu.cn> [unicore32 part]
Signed-off-by: Thomas Huth <thuth@redhat.com>
Diffstat (limited to 'target/arm/gdbstub.c')
-rw-r--r-- | target/arm/gdbstub.c | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/target/arm/gdbstub.c b/target/arm/gdbstub.c new file mode 100644 index 0000000000..04c1208d03 --- /dev/null +++ b/target/arm/gdbstub.c @@ -0,0 +1,103 @@ +/* + * ARM gdb server stub + * + * Copyright (c) 2003-2005 Fabrice Bellard + * Copyright (c) 2013 SUSE LINUX Products GmbH + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library 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 + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, see <http://www.gnu.org/licenses/>. + */ +#include "qemu/osdep.h" +#include "qemu-common.h" +#include "cpu.h" +#include "exec/gdbstub.h" + +/* Old gdb always expect FPA registers. Newer (xml-aware) gdb only expect + whatever the target description contains. Due to a historical mishap + the FPA registers appear in between core integer regs and the CPSR. + We hack round this by giving the FPA regs zero size when talking to a + newer gdb. */ + +int arm_cpu_gdb_read_register(CPUState *cs, uint8_t *mem_buf, int n) +{ + ARMCPU *cpu = ARM_CPU(cs); + CPUARMState *env = &cpu->env; + + if (n < 16) { + /* Core integer register. */ + return gdb_get_reg32(mem_buf, env->regs[n]); + } + if (n < 24) { + /* FPA registers. */ + if (gdb_has_xml) { + return 0; + } + memset(mem_buf, 0, 12); + return 12; + } + switch (n) { + case 24: + /* FPA status register. */ + if (gdb_has_xml) { + return 0; + } + return gdb_get_reg32(mem_buf, 0); + case 25: + /* CPSR */ + return gdb_get_reg32(mem_buf, cpsr_read(env)); + } + /* Unknown register. */ + return 0; +} + +int arm_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n) +{ + ARMCPU *cpu = ARM_CPU(cs); + CPUARMState *env = &cpu->env; + uint32_t tmp; + + tmp = ldl_p(mem_buf); + + /* Mask out low bit of PC to workaround gdb bugs. This will probably + cause problems if we ever implement the Jazelle DBX extensions. */ + if (n == 15) { + tmp &= ~1; + } + + if (n < 16) { + /* Core integer register. */ + env->regs[n] = tmp; + return 4; + } + if (n < 24) { /* 16-23 */ + /* FPA registers (ignored). */ + if (gdb_has_xml) { + return 0; + } + return 12; + } + switch (n) { + case 24: + /* FPA status register (ignored). */ + if (gdb_has_xml) { + return 0; + } + return 4; + case 25: + /* CPSR */ + cpsr_write(env, tmp, 0xffffffff, CPSRWriteByGDBStub); + return 4; + } + /* Unknown register. */ + return 0; +} |