Accepting request 195492 from home:a_faerber:branches:Virtualization
Add patch to fix gdbstub for arm/m68k/ppc guests OBS-URL: https://build.opensuse.org/request/show/195492 OBS-URL: https://build.opensuse.org/package/show/Virtualization/qemu?expand=0&rev=155
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0038-gdbstub-Fix-gdb_register_coprocesso.patch
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93
0038-gdbstub-Fix-gdb_register_coprocesso.patch
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From 1fd884e9d531b5b5b3e021eb3277a8784714df2f Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Andreas=20F=C3=A4rber?= <afaerber@suse.de>
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Date: Mon, 12 Aug 2013 18:09:47 +0200
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Subject: [PATCH] gdbstub: Fix gdb_register_coprocessor() register counting
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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Commit a0e372f0c49ac01faeaeb73a6e8f50e8ac615f34 reorganized the register
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counting for GDB. While it seems correct not to let the total number of
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registers skyrocket in an SMP scenario through a static variable, the
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distinction between total register count and 'g' packet register count
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(last_reg vs. num_g_regs) got lost among the way.
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Fix this by introducing CPUState::gdb_num_g_regs and using that in
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gdb_handle_packet().
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Reported-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
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Cc: qemu-stable@nongnu.org (stable-1.6)
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Tested-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
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Tested-by: Max Filippov <jcmvbkbc@gmail.com>
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Tested-by: Peter Maydell <peter.maydell@linaro.org>
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Signed-off-by: Andreas Färber <afaerber@suse.de>
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---
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gdbstub.c | 6 ++++--
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include/qom/cpu.h | 2 ++
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qom/cpu.c | 2 +-
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3 files changed, 7 insertions(+), 3 deletions(-)
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diff --git a/gdbstub.c b/gdbstub.c
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index 1af25a6..9d067d6 100644
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--- a/gdbstub.c
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+++ b/gdbstub.c
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@@ -621,6 +621,8 @@ void gdb_register_coprocessor(CPUState *cpu,
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if (g_pos != s->base_reg) {
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fprintf(stderr, "Error: Bad gdb register numbering for '%s'\n"
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"Expected %d got %d\n", xml, g_pos, s->base_reg);
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+ } else {
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+ cpu->gdb_num_g_regs = cpu->gdb_num_regs;
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}
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}
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}
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@@ -902,7 +904,7 @@ static int gdb_handle_packet(GDBState *s, const char *line_buf)
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case 'g':
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cpu_synchronize_state(s->g_cpu);
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len = 0;
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- for (addr = 0; addr < s->g_cpu->gdb_num_regs; addr++) {
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+ for (addr = 0; addr < s->g_cpu->gdb_num_g_regs; addr++) {
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reg_size = gdb_read_register(s->g_cpu, mem_buf + len, addr);
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len += reg_size;
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}
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@@ -914,7 +916,7 @@ static int gdb_handle_packet(GDBState *s, const char *line_buf)
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registers = mem_buf;
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len = strlen(p) / 2;
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hextomem((uint8_t *)registers, p, len);
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- for (addr = 0; addr < s->g_cpu->gdb_num_regs && len > 0; addr++) {
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+ for (addr = 0; addr < s->g_cpu->gdb_num_g_regs && len > 0; addr++) {
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reg_size = gdb_write_register(s->g_cpu, registers, addr);
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len -= reg_size;
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registers += reg_size;
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diff --git a/include/qom/cpu.h b/include/qom/cpu.h
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index 0d6e95c..3e49936 100644
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--- a/include/qom/cpu.h
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+++ b/include/qom/cpu.h
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@@ -152,6 +152,7 @@ struct kvm_run;
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* @current_tb: Currently executing TB.
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* @gdb_regs: Additional GDB registers.
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* @gdb_num_regs: Number of total registers accessible to GDB.
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+ * @gdb_num_g_regs: Number of registers in GDB 'g' packets.
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* @next_cpu: Next CPU sharing TB cache.
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* @kvm_fd: vCPU file descriptor for KVM.
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*
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@@ -188,6 +189,7 @@ struct CPUState {
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struct TranslationBlock *current_tb;
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struct GDBRegisterState *gdb_regs;
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int gdb_num_regs;
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+ int gdb_num_g_regs;
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CPUState *next_cpu;
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int kvm_fd;
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diff --git a/qom/cpu.c b/qom/cpu.c
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index aa95108..e71e57b 100644
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--- a/qom/cpu.c
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+++ b/qom/cpu.c
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@@ -240,7 +240,7 @@ static void cpu_common_initfn(Object *obj)
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CPUState *cpu = CPU(obj);
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CPUClass *cc = CPU_GET_CLASS(obj);
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- cpu->gdb_num_regs = cc->gdb_num_core_regs;
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+ cpu->gdb_num_regs = cpu->gdb_num_g_regs = cc->gdb_num_core_regs;
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}
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static int64_t cpu_common_get_arch_id(CPUState *cpu)
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@ -1,3 +1,8 @@
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-------------------------------------------------------------------
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Sat Aug 17 12:12:57 UTC 2013 - afaerber@suse.de
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- Fix gdbstub for arm/m68k/ppc guests (from pending upstream pull)
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-------------------------------------------------------------------
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Fri Aug 16 23:36:12 UTC 2013 - afaerber@suse.de
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@ -62,6 +62,7 @@ Patch0034: 0034-console-add-question-mark-escape-op.patch
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Patch0035: 0035-Make-char-muxer-more-robust-wrt-sma.patch
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Patch0036: 0036-linux-user-lseek-explicitly-cast-no.patch
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Patch0037: 0037-virtfs-proxy-helper-Provide-__u64-f.patch
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Patch0038: 0038-gdbstub-Fix-gdb_register_coprocesso.patch
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# Please do not add patches manually here, run update_git.sh.
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# this is to make lint happy
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Source300: rpmlintrc
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@ -151,6 +152,7 @@ run cross-architecture builds.
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%patch0035 -p1
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%patch0036 -p1
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%patch0037 -p1
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%patch0038 -p1
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%build
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./configure --prefix=%_prefix --sysconfdir=%_sysconfdir \
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@ -1,3 +1,8 @@
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-------------------------------------------------------------------
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Sat Aug 17 12:12:57 UTC 2013 - afaerber@suse.de
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- Fix gdbstub for arm/m68k/ppc guests (from pending upstream pull)
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-------------------------------------------------------------------
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Fri Aug 16 23:36:12 UTC 2013 - afaerber@suse.de
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@ -62,6 +62,7 @@ Patch0034: 0034-console-add-question-mark-escape-op.patch
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Patch0035: 0035-Make-char-muxer-more-robust-wrt-sma.patch
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Patch0036: 0036-linux-user-lseek-explicitly-cast-no.patch
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Patch0037: 0037-virtfs-proxy-helper-Provide-__u64-f.patch
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Patch0038: 0038-gdbstub-Fix-gdb_register_coprocesso.patch
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# Please do not add patches manually here, run update_git.sh.
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# this is to make lint happy
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Source300: rpmlintrc
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@ -211,6 +212,7 @@ This sub-package contains the guest agent.
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%patch0035 -p1
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%patch0036 -p1
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%patch0037 -p1
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%patch0038 -p1
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%build
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./configure --prefix=%_prefix --sysconfdir=%_sysconfdir \
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