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From: Pavel Dovgalyuk <Pavel.Dovgaluk@ispras.ru>
To: qemu-devel@nongnu.org
Cc: rth7680@gmail.com, agraf@suse.de, pavel.dovgaluk@ispras.ru,
	pbonzini@redhat.com, leon.alrae@imgtec.com, aurelien@aurel32.net
Subject: [Qemu-devel] [PATCH v7 03/11] cpu-exec: introduce loop exit with restore function
Date: Fri, 10 Jul 2015 12:57:02 +0300	[thread overview]
Message-ID: <20150710095702.13280.97477.stgit@PASHA-ISP> (raw)
In-Reply-To: <20150710095643.13280.88767.stgit@PASHA-ISP>

This patch introduces loop exit function, which also
restores guest CPU state according to the value of host
program counter.

Reviewed-by: Richard Henderson <rth@twiddle.net>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>

Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>
---
 cpu-exec.c              |    9 +++++++++
 include/exec/exec-all.h |    1 +
 2 files changed, 10 insertions(+), 0 deletions(-)

diff --git a/cpu-exec.c b/cpu-exec.c
index 2ffeb6e..cad1563 100644
--- a/cpu-exec.c
+++ b/cpu-exec.c
@@ -133,6 +133,15 @@ void cpu_loop_exit(CPUState *cpu)
     siglongjmp(cpu->jmp_env, 1);
 }
 
+void cpu_loop_exit_restore(CPUState *cpu, uintptr_t pc)
+{
+    if (pc) {
+        cpu_restore_state(cpu, pc);
+    }
+    cpu->current_tb = NULL;
+    siglongjmp(cpu->jmp_env, 1);
+}
+
 /* exit the current TB from a signal handler. The host registers are
    restored in a state compatible with the CPU emulator
  */
diff --git a/include/exec/exec-all.h b/include/exec/exec-all.h
index 2573e8c..0d038ba 100644
--- a/include/exec/exec-all.h
+++ b/include/exec/exec-all.h
@@ -90,6 +90,7 @@ TranslationBlock *tb_gen_code(CPUState *cpu,
                               int cflags);
 void cpu_exec_init(CPUArchState *env);
 void QEMU_NORETURN cpu_loop_exit(CPUState *cpu);
+void QEMU_NORETURN cpu_loop_exit_restore(CPUState *cpu, uintptr_t pc);
 
 #if !defined(CONFIG_USER_ONLY)
 bool qemu_in_vcpu_thread(void);

  parent reply	other threads:[~2015-07-10  9:57 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-07-10  9:56 [Qemu-devel] [PATCH v7 00/11] Fix exceptions handling for MIPS, PowerPC, and i386 Pavel Dovgalyuk
2015-07-10  9:56 ` [Qemu-devel] [PATCH v7 01/11] softmmu: add helper function to pass through retaddr Pavel Dovgalyuk
2015-07-10  9:56 ` [Qemu-devel] [PATCH v7 02/11] softmmu: remove now unused functions Pavel Dovgalyuk
2015-07-10  9:57 ` Pavel Dovgalyuk [this message]
2015-07-10  9:57 ` [Qemu-devel] [PATCH v7 04/11] target-mips: improve exception handling Pavel Dovgalyuk
2015-08-13 13:12   ` Leon Alrae
2015-08-17 21:43     ` Aurelien Jarno
2015-08-28  9:08       ` Pavel Dovgaluk
2015-09-15 16:45         ` Leon Alrae
2015-09-16 12:10           ` Pavel Dovgaluk
2015-07-10  9:57 ` [Qemu-devel] [PATCH v7 05/11] target-i386: introduce new raise_exception functions Pavel Dovgalyuk
2015-07-10  9:57 ` [Qemu-devel] [PATCH v7 06/11] target-i386: exception handling for FPU instructions Pavel Dovgalyuk
2015-07-10  9:57 ` [Qemu-devel] [PATCH v7 07/11] target-i386: exception handling for div instructions Pavel Dovgalyuk
2015-07-10  9:57 ` [Qemu-devel] [PATCH v7 08/11] target-i386: exception handling for memory helpers Pavel Dovgalyuk
2015-07-10  9:57 ` [Qemu-devel] [PATCH v7 09/11] target-i386: exception handling for seg_helper functions Pavel Dovgalyuk
2015-08-18 15:15   ` Richard Henderson
2015-07-10  9:57 ` [Qemu-devel] [PATCH v7 10/11] target-i386: exception handling for other helper functions Pavel Dovgalyuk
2015-07-10  9:57 ` [Qemu-devel] [PATCH v7 11/11] target-ppc: exceptions handling in icount mode Pavel Dovgalyuk
2015-09-14 22:55 ` [Qemu-devel] [PATCH v7 00/11] Fix exceptions handling for MIPS, PowerPC, and i386 Richard Henderson
2015-09-15 10:58   ` Aurelien Jarno
2015-09-15 12:06     ` Leon Alrae
2015-09-20 20:31   ` Alexander Graf

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