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[Qemu-devel] [PATCH 04/10] qemu-tech: move text from qemu-tech to tcg/RE
From: |
Paolo Bonzini |
Subject: |
[Qemu-devel] [PATCH 04/10] qemu-tech: move text from qemu-tech to tcg/README |
Date: |
Thu, 6 Oct 2016 17:24:17 +0200 |
Signed-off-by: Paolo Bonzini <address@hidden>
---
qemu-tech.texi | 12 ++----------
tcg/README | 5 +++++
2 files changed, 7 insertions(+), 10 deletions(-)
diff --git a/qemu-tech.texi b/qemu-tech.texi
index 2ab7cd4..082b62c 100644
--- a/qemu-tech.texi
+++ b/qemu-tech.texi
@@ -287,16 +287,8 @@ are very complicated and highly CPU dependent. QEMU uses
some tricks
which make it relatively easily portable and simple while achieving good
performances.
-After the release of version 0.9.1, QEMU switched to a new method of
-generating code, Tiny Code Generator or TCG. TCG relaxes the
-dependency on the exact version of the compiler used. The basic idea
-is to split every target instruction into a couple of RISC-like TCG
-ops (see @code{target-i386/translate.c}). Some optimizations can be
-performed at this stage, including liveness analysis and trivial
-constant expression evaluation. TCG ops are then implemented in the
-host CPU back end, also known as TCG target (see
address@hidden/i386/tcg-target.inc.c}). For more information, please take a
-look at @code{tcg/README}.
+QEMU's dynamic translation backend is called TCG, for "Tiny Code
+Generator". For more information, please take a look at @code{tcg/README}.
@node Condition code optimisations
@section Condition code optimisations
diff --git a/tcg/README b/tcg/README
index 1d48aa9..ae31388 100644
--- a/tcg/README
+++ b/tcg/README
@@ -8,6 +8,11 @@ in the QOP code generator written by Paul Brook.
2) Definitions
+TCG receives RISC-like "TCG ops" and performs some optimizations on them,
+including liveness analysis and trivial constant expression
+evaluation. TCG ops are then implemented in the host CPU back end,
+also known as the TCG "target".
+
The TCG "target" is the architecture for which we generate the
code. It is of course not the same as the "target" of QEMU which is
the emulated architecture. As TCG started as a generic C backend used
--
2.7.4
- [Qemu-devel] [PATCH 00/10] qemu-tech cleanup, Paolo Bonzini, 2016/10/06
- [Qemu-devel] [PATCH 01/10] qemu-tech: drop index, Paolo Bonzini, 2016/10/06
- [Qemu-devel] [PATCH 04/10] qemu-tech: move text from qemu-tech to tcg/README,
Paolo Bonzini <=
- [Qemu-devel] [PATCH 03/10] qemu-doc: drop installation and compilation notes, Paolo Bonzini, 2016/10/06
- [Qemu-devel] [PATCH 05/10] qemu-tech: document lazy condition code evaluation in cpu.h, Paolo Bonzini, 2016/10/06
- [Qemu-devel] [PATCH 02/10] qemu-doc: replace introduction with the one from the internals manual, Paolo Bonzini, 2016/10/06
- [Qemu-devel] [PATCH 06/10] qemu-tech: move user mode emulation features from qemu-tech, Paolo Bonzini, 2016/10/06