[PATCH 1/2] util/log: Add vu to dump content of vector unit

[Kito Cheng]

Add new option for -d vu to dump the content of vector unit, many target
has vector register, but there is no easy way to dump the content, we
use this on downstream for a while to help debug, and I feel that's
really useful, so I think it would be great to upstream that to save debug time
for other people :)

Signed-off-by: Kito Cheng <kito.ch...@sifive.com>
---
 accel/tcg/cpu-exec.c  | 3 +++
 include/hw/core/cpu.h | 2 ++
 include/qemu/log.h    | 1 +
 util/log.c            | 2 ++
 4 files changed, 8 insertions(+)

diff --git a/accel/tcg/cpu-exec.c b/accel/tcg/cpu-exec.c
index a565a3f8ec..2cbec0a6ed 100644
--- a/accel/tcg/cpu-exec.c
+++ b/accel/tcg/cpu-exec.c
@@ -221,6 +221,9 @@ static inline void log_cpu_exec(target_ulong pc, CPUState 
*cpu,
                 if (qemu_loglevel_mask(CPU_LOG_TB_FPU)) {
                     flags |= CPU_DUMP_FPU;
                 }
+                if (qemu_loglevel_mask(CPU_LOG_TB_VU)) {
+                    flags |= CPU_DUMP_VU;
+                }
 #if defined(TARGET_I386)
                 flags |= CPU_DUMP_CCOP;
 #endif
diff --git a/include/hw/core/cpu.h b/include/hw/core/cpu.h
index 996f94059f..7a767e17cd 100644
--- a/include/hw/core/cpu.h
+++ b/include/hw/core/cpu.h
@@ -535,11 +535,13 @@ GuestPanicInformation *cpu_get_crash_info(CPUState *cpu);
  * @CPU_DUMP_CODE:
  * @CPU_DUMP_FPU: dump FPU register state, not just integer
  * @CPU_DUMP_CCOP: dump info about TCG QEMU's condition code optimization state
+ * @CPU_DUMP_VU: dump vector register state
  */
 enum CPUDumpFlags {
     CPU_DUMP_CODE = 0x00010000,
     CPU_DUMP_FPU  = 0x00020000,
     CPU_DUMP_CCOP = 0x00040000,
+    CPU_DUMP_VU   = 0x00080000,
 };
 
 /**
diff --git a/include/qemu/log.h b/include/qemu/log.h
index c5643d8dd5..49bd0b0fbc 100644
--- a/include/qemu/log.h
+++ b/include/qemu/log.h
@@ -35,6 +35,7 @@ bool qemu_log_separate(void);
 /* LOG_STRACE is used for user-mode strace logging. */
 #define LOG_STRACE         (1 << 19)
 #define LOG_PER_THREAD     (1 << 20)
+#define CPU_LOG_TB_VU      (1 << 21)
 
 /* Lock/unlock output. */
 
diff --git a/util/log.c b/util/log.c
index d6eb0378c3..775d122c2e 100644
--- a/util/log.c
+++ b/util/log.c
@@ -441,6 +441,8 @@ const QEMULogItem qemu_log_items[] = {
 #ifdef CONFIG_PLUGIN
     { CPU_LOG_PLUGIN, "plugin", "output from TCG plugins\n"},
 #endif
+    { CPU_LOG_TB_VU, "vu",
+      "include vector unit registers in the 'cpu' logging" },
     { LOG_STRACE, "strace",
       "log every user-mode syscall, its input, and its result" },
     { LOG_PER_THREAD, "tid",
-- 
2.34.0