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[Qemu-devel] [PULL 33/39] qemu-tech: move text from qemu-tech to tcg/REA
From: |
Paolo Bonzini |
Subject: |
[Qemu-devel] [PULL 33/39] qemu-tech: move text from qemu-tech to tcg/README |
Date: |
Fri, 7 Oct 2016 18:57:57 +0200 |
Reviewed-by: Emilio G. Cota <address@hidden>
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] [PULL 21/39] i8259: give ISA device when registering ISA ioports, (continued)
- [Qemu-devel] [PULL 21/39] i8259: give ISA device when registering ISA ioports, Paolo Bonzini, 2016/10/07
- [Qemu-devel] [PULL 23/39] char: update read handler in all cases, Paolo Bonzini, 2016/10/07
- [Qemu-devel] [PULL 25/39] qemu_kill_report: Report PID name too, Paolo Bonzini, 2016/10/07
- [Qemu-devel] [PULL 24/39] util: Introduce qemu_get_pid_name, Paolo Bonzini, 2016/10/07
- [Qemu-devel] [PULL 26/39] qemu-nbd: Shrink image size by specified offset, Paolo Bonzini, 2016/10/07
- [Qemu-devel] [PULL 27/39] qht: simplify qht_reset_size, Paolo Bonzini, 2016/10/07
- [Qemu-devel] [PULL 28/39] qht: fix unlock-after-free segfault upon resizing, Paolo Bonzini, 2016/10/07
- [Qemu-devel] [PULL 30/39] qemu-tech: drop index, Paolo Bonzini, 2016/10/07
- [Qemu-devel] [PULL 29/39] test-qht: perform lookups under rcu_read_lock, Paolo Bonzini, 2016/10/07
- [Qemu-devel] [PULL 31/39] qemu-doc: replace introduction with the one from the internals manual, Paolo Bonzini, 2016/10/07
- [Qemu-devel] [PULL 33/39] qemu-tech: move text from qemu-tech to tcg/README,
Paolo Bonzini <=
- [Qemu-devel] [PULL 32/39] qemu-doc: drop installation and compilation notes, Paolo Bonzini, 2016/10/07
- [Qemu-devel] [PULL 36/39] qemu-tech: move TCG test documentation to tests/tcg/README, Paolo Bonzini, 2016/10/07
- [Qemu-devel] [PULL 34/39] qemu-tech: document lazy condition code evaluation in cpu.h, Paolo Bonzini, 2016/10/07
- [Qemu-devel] [PULL 37/39] qemu-tech: reorganize content, Paolo Bonzini, 2016/10/07
- [Qemu-devel] [PULL 38/39] qemu-tech: rewrite some parts, Paolo Bonzini, 2016/10/07
- [Qemu-devel] [PULL 39/39] qemu-doc: merge qemu-tech and qemu-doc, Paolo Bonzini, 2016/10/07
- [Qemu-devel] [PULL 35/39] qemu-tech: move user mode emulation features from qemu-tech, Paolo Bonzini, 2016/10/07
- Re: [Qemu-devel] [PULL 00/39] Misc patches for 2016-10-07, Peter Maydell, 2016/10/10