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Fri, 2 Aug 2024 10:02:14 GMT Received: from smtpav02.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 19FA12006B; Fri, 2 Aug 2024 10:02:12 +0000 (GMT) Received: from smtpav02.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id B51892006A; Fri, 2 Aug 2024 10:02:11 +0000 (GMT) Received: from heavy.ibm.com (unknown [9.171.14.120]) by smtpav02.fra02v.mail.ibm.com (Postfix) with ESMTP; Fri, 2 Aug 2024 10:02:11 +0000 (GMT) From: Ilya Leoshkevich To: Laurent Vivier , =?utf-8?q?Alex_Benn=C3=A9e?= , =?utf-8?q?Philippe_M?= =?utf-8?q?athieu-Daud=C3=A9?= , Paolo Bonzini , Richard Henderson Cc: qemu-devel@nongnu.org, Ilya Leoshkevich Subject: [PATCH 3/5] target/i386/gdbstub: Factor out gdb_get_reg() and gdb_write_reg() Date: Fri, 2 Aug 2024 11:59:16 +0200 Message-ID: <20240802095942.34565-4-iii@linux.ibm.com> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20240802095942.34565-1-iii@linux.ibm.com> References: <20240802095942.34565-1-iii@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: fNl_JTk-73h5PktGgvIjHAg2oSFRyTRI X-Proofpoint-GUID: vKIzMZyDF7uCfsfcRfQFkEdYhYg2pjpM X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.680,FMLib:17.12.28.16 definitions=2024-08-02_06,2024-08-01_01,2024-05-17_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 mlxscore=0 bulkscore=0 spamscore=0 clxscore=1015 priorityscore=1501 mlxlogscore=673 lowpriorityscore=0 malwarescore=0 impostorscore=0 adultscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2407110000 definitions=main-2408020066 Received-SPF: pass client-ip=148.163.156.1; envelope-from=iii@linux.ibm.com; helo=mx0a-001b2d01.pphosted.com X-Spam_score_int: -19 X-Spam_score: -2.0 X-Spam_bar: -- X-Spam_report: (-2.0 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org i386 gdbstub handles both i386 and x86_64. Factor out two functions for reading and writing registers without knowing their bitness. Signed-off-by: Ilya Leoshkevich Reviewed-by: Richard Henderson --- target/i386/gdbstub.c | 52 ++++++++++++++++++++++++++----------------- 1 file changed, 31 insertions(+), 21 deletions(-) diff --git a/target/i386/gdbstub.c b/target/i386/gdbstub.c index 4acf485879e..ec64ab6c53f 100644 --- a/target/i386/gdbstub.c +++ b/target/i386/gdbstub.c @@ -96,6 +96,19 @@ static int gdb_write_reg_cs64(uint32_t hflags, uint8_t *buf, target_ulong *val) return 4; } +static int gdb_get_reg(CPUX86State *env, GByteArray *mem_buf, target_ulong val) +{ + if (TARGET_LONG_BITS == 64) { + if (env->hflags & HF_CS64_MASK) { + return gdb_get_reg64(mem_buf, val); + } else { + return gdb_get_reg64(mem_buf, val & 0xffffffffUL); + } + } else { + return gdb_get_reg32(mem_buf, val); + } +} + int x86_cpu_gdb_read_register(CPUState *cs, GByteArray *mem_buf, int n) { X86CPU *cpu = X86_CPU(cs); @@ -137,15 +150,7 @@ int x86_cpu_gdb_read_register(CPUState *cs, GByteArray *mem_buf, int n) } else { switch (n) { case IDX_IP_REG: - if (TARGET_LONG_BITS == 64) { - if (env->hflags & HF_CS64_MASK) { - return gdb_get_reg64(mem_buf, env->eip); - } else { - return gdb_get_reg64(mem_buf, env->eip & 0xffffffffUL); - } - } else { - return gdb_get_reg32(mem_buf, env->eip); - } + return gdb_get_reg(env, mem_buf, env->eip); case IDX_FLAGS_REG: return gdb_get_reg32(mem_buf, env->eflags); @@ -248,6 +253,22 @@ static int x86_cpu_gdb_load_seg(X86CPU *cpu, X86Seg sreg, uint8_t *mem_buf) return 4; } +static int gdb_write_reg(CPUX86State *env, uint8_t *mem_buf, target_ulong *val) +{ + if (TARGET_LONG_BITS == 64) { + if (env->hflags & HF_CS64_MASK) { + *val = ldq_p(mem_buf); + } else { + *val = ldq_p(mem_buf) & 0xffffffffUL; + } + return 8; + } else { + *val &= ~0xffffffffUL; + *val |= (uint32_t)ldl_p(mem_buf); + return 4; + } +} + int x86_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n) { X86CPU *cpu = X86_CPU(cs); @@ -288,18 +309,7 @@ int x86_cpu_gdb_write_register(CPUState *cs, uint8_t *mem_buf, int n) } else { switch (n) { case IDX_IP_REG: - if (TARGET_LONG_BITS == 64) { - if (env->hflags & HF_CS64_MASK) { - env->eip = ldq_p(mem_buf); - } else { - env->eip = ldq_p(mem_buf) & 0xffffffffUL; - } - return 8; - } else { - env->eip &= ~0xffffffffUL; - env->eip |= (uint32_t)ldl_p(mem_buf); - return 4; - } + return gdb_write_reg(env, mem_buf, &env->eip); case IDX_FLAGS_REG: env->eflags = ldl_p(mem_buf); return 4;