qemu-devel.nongnu.org archive mirror
 help / color / mirror / Atom feed
From: Peter Maydell <peter.maydell@linaro.org>
To: qemu-devel@nongnu.org
Cc: "Yoshinori Sato" <ysato@users.sourceforge.jp>,
	"Philippe Mathieu-Daudé" <philmd@redhat.com>,
	"Richard Henderson" <richard.henderson@linaro.org>,
	"Greg Kurz" <groug@kaod.org>,
	"Laurent Vivier" <laurent@vivier.eu>,
	qemu-ppc@nongnu.org, "Alex Bennée" <alex.bennee@linaro.org>,
	"David Gibson" <david@gibson.dropbear.id.au>
Subject: [PATCH 3/5] target/ppc: Drop use of gdb_get_float64() and ldfq_p()
Date: Mon,  8 Feb 2021 11:34:26 +0000	[thread overview]
Message-ID: <20210208113428.7181-4-peter.maydell@linaro.org> (raw)
In-Reply-To: <20210208113428.7181-1-peter.maydell@linaro.org>

We used to make a distinction between 'float64'/'float32' types and
the 'uint64_t'/'uint32_t' types, requiring special conversion
operations to go between them.  We've now dropped this distinction as
unnecessary, and the 'float*' types remain primarily for
documentation purposes when used in places like the function
prototypes of TCG helper functions.

This means that there's no need for a special gdb_get_float64()
function to write a float64 value to the GDB protocol buffer; we can
just use gdb_get_reg64().

Similarly, for reading a value out of the GDB buffer into a float64
we can use ldq_p() and need not use ldfq_p().

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 target/ppc/gdbstub.c            | 8 ++++----
 target/ppc/translate_init.c.inc | 4 ++--
 2 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/target/ppc/gdbstub.c b/target/ppc/gdbstub.c
index 01459dd31d2..c28319fb974 100644
--- a/target/ppc/gdbstub.c
+++ b/target/ppc/gdbstub.c
@@ -130,7 +130,7 @@ int ppc_cpu_gdb_read_register(CPUState *cs, GByteArray *buf, int n)
         gdb_get_regl(buf, env->gpr[n]);
     } else if (n < 64) {
         /* fprs */
-        gdb_get_float64(buf, *cpu_fpr_ptr(env, n - 32));
+        gdb_get_reg64(buf, *cpu_fpr_ptr(env, n - 32));
     } else {
         switch (n) {
         case 64:
@@ -184,7 +184,7 @@ int ppc_cpu_gdb_read_register_apple(CPUState *cs, GByteArray *buf, int n)
         gdb_get_reg64(buf, env->gpr[n]);
     } else if (n < 64) {
         /* fprs */
-        gdb_get_float64(buf, *cpu_fpr_ptr(env, n - 32));
+        gdb_get_reg64(buf, *cpu_fpr_ptr(env, n - 32));
     } else if (n < 96) {
         /* Altivec */
         gdb_get_reg64(buf, n - 64);
@@ -241,7 +241,7 @@ int ppc_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n)
         env->gpr[n] = ldtul_p(mem_buf);
     } else if (n < 64) {
         /* fprs */
-        *cpu_fpr_ptr(env, n - 32) = ldfq_p(mem_buf);
+        *cpu_fpr_ptr(env, n - 32) = ldq_p(mem_buf);
     } else {
         switch (n) {
         case 64:
@@ -291,7 +291,7 @@ int ppc_cpu_gdb_write_register_apple(CPUState *cs, uint8_t *mem_buf, int n)
         env->gpr[n] = ldq_p(mem_buf);
     } else if (n < 64) {
         /* fprs */
-        *cpu_fpr_ptr(env, n - 32) = ldfq_p(mem_buf);
+        *cpu_fpr_ptr(env, n - 32) = ldq_p(mem_buf);
     } else {
         switch (n) {
         case 64 + 32:
diff --git a/target/ppc/translate_init.c.inc b/target/ppc/translate_init.c.inc
index 9867d0a6e4a..7bd111d905e 100644
--- a/target/ppc/translate_init.c.inc
+++ b/target/ppc/translate_init.c.inc
@@ -9907,7 +9907,7 @@ static int gdb_get_float_reg(CPUPPCState *env, GByteArray *buf, int n)
 {
     uint8_t *mem_buf;
     if (n < 32) {
-        gdb_get_float64(buf, *cpu_fpr_ptr(env, n));
+        gdb_get_reg64(buf, *cpu_fpr_ptr(env, n));
         mem_buf = gdb_get_reg_ptr(buf, 8);
         ppc_maybe_bswap_register(env, mem_buf, 8);
         return 8;
@@ -9925,7 +9925,7 @@ static int gdb_set_float_reg(CPUPPCState *env, uint8_t *mem_buf, int n)
 {
     if (n < 32) {
         ppc_maybe_bswap_register(env, mem_buf, 8);
-        *cpu_fpr_ptr(env, n) = ldfq_p(mem_buf);
+        *cpu_fpr_ptr(env, n) = ldq_p(mem_buf);
         return 8;
     }
     if (n == 32) {
-- 
2.20.1



  parent reply	other threads:[~2021-02-08 18:09 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-02-08 11:34 [PATCH 0/5] Drop float32/float64 accessors used by gdbstub code Peter Maydell
2021-02-08 11:34 ` [PATCH 1/5] target/sh4: Drop use of gdb_get_float32() and ldfl_p() Peter Maydell
2021-02-08 11:34 ` [PATCH 2/5] target/m68k: Drop use of gdb_get_float64() and ldfq_p() Peter Maydell
2021-02-09 19:41   ` Laurent Vivier
2021-02-08 11:34 ` Peter Maydell [this message]
2021-02-09  5:10   ` [PATCH 3/5] target/ppc: " David Gibson
2021-02-08 11:34 ` [PATCH 4/5] gdbstub: Remove unused gdb_get_float32() and gdb_get_float64() Peter Maydell
2021-02-08 11:34 ` [PATCH 5/5] bswap.h: Remove unused float-access functions Peter Maydell
2021-02-08 11:57 ` [PATCH 0/5] Drop float32/float64 accessors used by gdbstub code Philippe Mathieu-Daudé
2021-02-09 20:55 ` Alex Bennée

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20210208113428.7181-4-peter.maydell@linaro.org \
    --to=peter.maydell@linaro.org \
    --cc=alex.bennee@linaro.org \
    --cc=david@gibson.dropbear.id.au \
    --cc=groug@kaod.org \
    --cc=laurent@vivier.eu \
    --cc=philmd@redhat.com \
    --cc=qemu-devel@nongnu.org \
    --cc=qemu-ppc@nongnu.org \
    --cc=richard.henderson@linaro.org \
    --cc=ysato@users.sourceforge.jp \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).