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authorPeter Maydell <peter.maydell@linaro.org>2016-10-10 10:39:29 +0100
committerPeter Maydell <peter.maydell@linaro.org>2016-10-10 10:39:29 +0100
commit86e121ae75d10d0aa4ef76150e94a2e83bdac3e9 (patch)
treea2feb88ccccb1f6a9480f0b6e15e4e31ad6cce39 /target-m68k
parent48f592118ab42f83a1a7561c4bfd2b72a100f241 (diff)
parent78e87797ba0b6612fc1c95216a0b81c744fb85b0 (diff)
Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into staging
* Thread Sanitizer fixes (Alex) * Coverity fixes (David) * test-qht fixes (Emilio) * QOM interface for info irq/info pic (Hervé) * -rtc clock=rt fix (Junlian) * mux chardev fixes (Marc-André) * nicer report on death by signal (Michal) * qemu-tech TLC (Paolo) * MSI support for edu device (Peter) * qemu-nbd --offset fix (Tomáš) # gpg: Signature made Fri 07 Oct 2016 17:25:10 BST # gpg: using RSA key 0xBFFBD25F78C7AE83 # gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>" # gpg: aka "Paolo Bonzini <pbonzini@redhat.com>" # Primary key fingerprint: 46F5 9FBD 57D6 12E7 BFD4 E2F7 7E15 100C CD36 69B1 # Subkey fingerprint: F133 3857 4B66 2389 866C 7682 BFFB D25F 78C7 AE83 * remotes/bonzini/tags/for-upstream: (39 commits) qemu-doc: merge qemu-tech and qemu-doc qemu-tech: rewrite some parts qemu-tech: reorganize content qemu-tech: move TCG test documentation to tests/tcg/README qemu-tech: move user mode emulation features from qemu-tech qemu-tech: document lazy condition code evaluation in cpu.h qemu-tech: move text from qemu-tech to tcg/README qemu-doc: drop installation and compilation notes qemu-doc: replace introduction with the one from the internals manual qemu-tech: drop index test-qht: perform lookups under rcu_read_lock qht: fix unlock-after-free segfault upon resizing qht: simplify qht_reset_size qemu-nbd: Shrink image size by specified offset qemu_kill_report: Report PID name too util: Introduce qemu_get_pid_name char: update read handler in all cases char: use a fixed idx for child muxed chr i8259: give ISA device when registering ISA ioports .travis.yml: add gcc sanitizer build ... Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'target-m68k')
-rw-r--r--target-m68k/cpu.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/target-m68k/cpu.h b/target-m68k/cpu.h
index c2d40cb1cc..471f490dc1 100644
--- a/target-m68k/cpu.h
+++ b/target-m68k/cpu.h
@@ -154,6 +154,14 @@ int cpu_m68k_signal_handler(int host_signum, void *pinfo,
void *puc);
void cpu_m68k_flush_flags(CPUM68KState *, int);
+
+/* Instead of computing the condition codes after each m68k instruction,
+ * QEMU just stores one operand (called CC_SRC), the result
+ * (called CC_DEST) and the type of operation (called CC_OP). When the
+ * condition codes are needed, the condition codes can be calculated
+ * using this information. Condition codes are not generated if they
+ * are only needed for conditional branches.
+ */
enum {
CC_OP_DYNAMIC, /* Use env->cc_op */
CC_OP_FLAGS, /* CC_DEST = CVZN, CC_SRC = unused */