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| author | Peter Maydell <peter.maydell@linaro.org> | 2016-10-10 10:39:29 +0100 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2016-10-10 10:39:29 +0100 |
| commit | 86e121ae75d10d0aa4ef76150e94a2e83bdac3e9 (patch) | |
| tree | a2feb88ccccb1f6a9480f0b6e15e4e31ad6cce39 /target-s390x | |
| parent | 48f592118ab42f83a1a7561c4bfd2b72a100f241 (diff) | |
| parent | 78e87797ba0b6612fc1c95216a0b81c744fb85b0 (diff) | |
| download | qemu-86e121ae75d10d0aa4ef76150e94a2e83bdac3e9.tar.gz | |
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-s390x')
| -rw-r--r-- | target-s390x/cpu.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/target-s390x/cpu.h b/target-s390x/cpu.h index 4fb34b598d..4e58cdee3e 100644 --- a/target-s390x/cpu.h +++ b/target-s390x/cpu.h @@ -671,6 +671,13 @@ ObjectClass *s390_cpu_class_by_name(const char *name); /* CC optimization */ +/* Instead of computing the condition codes after each x86 instruction, + * QEMU just stores the result (called CC_DST), the type of operation + * (called CC_OP) and whatever operands are needed (CC_SRC and possibly + * CC_VR). 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 { CC_OP_CONST0 = 0, /* CC is 0 */ CC_OP_CONST1, /* CC is 1 */ |