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[83.42.57.116]) by smtp.gmail.com with ESMTPSA id q187sm19020295wma.41.2020.04.14.07.32.50 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 14 Apr 2020 07:32:51 -0700 (PDT) From: =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= To: qemu-devel@nongnu.org Subject: [PATCH-for-5.0 v2 2/2] gdbstub: Introduce gdb_get_float64() to get 64-bit float registers Date: Tue, 14 Apr 2020 16:32:40 +0200 Message-Id: <20200414143240.21764-3-philmd@redhat.com> X-Mailer: git-send-email 2.21.1 In-Reply-To: <20200414143240.21764-1-philmd@redhat.com> References: <20200414143240.21764-1-philmd@redhat.com> MIME-Version: 1.0 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=UTF-8; text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 207.211.31.81 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Peter Maydell , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Laurent Vivier , qemu-ppc@nongnu.org, =?UTF-8?q?Alex=20Benn=C3=A9e?= , Aurelien Jarno , David Gibson Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" When converted to use GByteArray in commits 462474d760c and a010bdbe719, the call to stfq_p() was removed. This call serialize a float. Since we now use a GByteArray, we can not use stfq_p() directly. Introduce the gdb_get_float64() helper to load a float64 register. Fixes: 462474d760c ("target/m68k: use gdb_get_reg helpers") Fixes: a010bdbe719 ("extend GByteArray to read register helpers") Signed-off-by: Philippe Mathieu-Daud=C3=A9 --- include/exec/gdbstub.h | 12 ++++++++++++ target/m68k/helper.c | 3 ++- target/ppc/gdbstub.c | 4 ++-- target/ppc/translate_init.inc.c | 2 +- 4 files changed, 17 insertions(+), 4 deletions(-) diff --git a/include/exec/gdbstub.h b/include/exec/gdbstub.h index 3caca99416..ef88cefbf6 100644 --- a/include/exec/gdbstub.h +++ b/include/exec/gdbstub.h @@ -137,6 +137,18 @@ static inline int gdb_get_float32(GByteArray *array, f= loat32 val) return sizeof(buf); } =20 +static inline int gdb_get_float64(GByteArray *array, float64 val) +{ + uint8_t buf[8]; + + QEMU_BUILD_BUG_ON(sizeof(CPU_DoubleU) !=3D sizeof(buf)); + + stfq_p(buf, val); + g_byte_array_append(array, buf, sizeof(buf)); + + return sizeof(buf); +} + static inline int gdb_get_zeroes(GByteArray *array, size_t len) { for (size_t i =3D 0; i < len; i++) { diff --git a/target/m68k/helper.c b/target/m68k/helper.c index 014657c637..cc80b48dda 100644 --- a/target/m68k/helper.c +++ b/target/m68k/helper.c @@ -72,7 +72,8 @@ static int cf_fpu_gdb_get_reg(CPUM68KState *env, GByteArr= ay *mem_buf, int n) { if (n < 8) { float_status s; - return gdb_get_reg64(mem_buf, floatx80_to_float64(env->fregs[n].d,= &s)); + return gdb_get_float64(mem_buf, + floatx80_to_float64(env->fregs[n].d, &s)); } switch (n) { case 8: /* fpcontrol */ diff --git a/target/ppc/gdbstub.c b/target/ppc/gdbstub.c index eb362dd9ae..5c11c88b2a 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_reg64(buf, *cpu_fpr_ptr(env, n - 32)); + gdb_get_float64(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, GByte= Array *buf, int n) gdb_get_reg64(buf, env->gpr[n]); } else if (n < 64) { /* fprs */ - gdb_get_reg64(buf, *cpu_fpr_ptr(env, n - 32)); + gdb_get_float64(buf, *cpu_fpr_ptr(env, n - 32)); } else if (n < 96) { /* Altivec */ gdb_get_reg64(buf, n - 64); diff --git a/target/ppc/translate_init.inc.c b/target/ppc/translate_init.in= c.c index e853164a86..d825cb5975 100644 --- a/target/ppc/translate_init.inc.c +++ b/target/ppc/translate_init.inc.c @@ -9881,7 +9881,7 @@ static int gdb_get_float_reg(CPUPPCState *env, GByteA= rray *buf, int n) { uint8_t *mem_buf; if (n < 32) { - gdb_get_reg64(buf, *cpu_fpr_ptr(env, n)); + gdb_get_float64(buf, *cpu_fpr_ptr(env, n)); mem_buf =3D gdb_get_reg_ptr(buf, 8); ppc_maybe_bswap_register(env, mem_buf, 8); return 8; --=20 2.21.1