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[50.253.99.174]) by smtp.gmail.com with ESMTPSA id l2sm3206741iln.50.2021.11.04.07.06.29 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 04 Nov 2021 07:06:29 -0700 (PDT) From: Warner Losh To: qemu-devel@nongnu.org Subject: [PATCH v3 22/29] bsd-user/arm/target_arch_signal.h: arm get_mcontext Date: Thu, 4 Nov 2021 08:05:29 -0600 Message-Id: <20211104140536.42573-23-imp@bsdimp.com> X-Mailer: git-send-email 2.33.0 In-Reply-To: <20211104140536.42573-1-imp@bsdimp.com> References: <20211104140536.42573-1-imp@bsdimp.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Received-SPF: none client-ip=2607:f8b0:4864:20::130; envelope-from=imp@bsdimp.com; helo=mail-il1-x130.google.com X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_NONE=0.001 autolearn=unavailable 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: , Cc: Stacey Son , qemu-trivial@nongnu.org, Kyle Evans , Michael Tokarev , Laurent Vivier , Philippe Mathieu-Daude , Richard Henderson , Warner Losh Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Get the machine context from the CPU state. Signed-off-by: Stacey Son Signed-off-by: Kyle Evans Signed-off-by: Warner Losh Reviewed-by: Kyle Evans Reviewed-by: Richard Henderson --- bsd-user/arm/target_arch_signal.h | 50 +++++++++++++++++++++++++++++++ 1 file changed, 50 insertions(+) diff --git a/bsd-user/arm/target_arch_signal.h b/bsd-user/arm/target_arch_signal.h index e673132c68..ebb44d10dc 100644 --- a/bsd-user/arm/target_arch_signal.h +++ b/bsd-user/arm/target_arch_signal.h @@ -121,4 +121,54 @@ set_sigtramp_args(CPUARMState *env, int sig, struct target_sigframe *frame, return 0; } +/* + * Compare to arm/arm/machdep.c get_mcontext() + * Assumes that the memory is locked if mcp points to user memory. + */ +static inline abi_long get_mcontext(CPUARMState *env, target_mcontext_t *mcp, + int flags) +{ + int err = 0; + uint32_t *gr = mcp->__gregs; + + if (mcp->mc_vfp_size != 0 && mcp->mc_vfp_size != sizeof(target_mcontext_vfp_t)) { + return -TARGET_EINVAL; + } + + gr[TARGET_REG_CPSR] = tswap32(cpsr_read(env)); + if (flags & TARGET_MC_GET_CLEAR_RET) { + gr[TARGET_REG_R0] = 0; + gr[TARGET_REG_CPSR] &= ~CPSR_C; + } else { + gr[TARGET_REG_R0] = tswap32(env->regs[0]); + } + + gr[TARGET_REG_R1] = tswap32(env->regs[1]); + gr[TARGET_REG_R2] = tswap32(env->regs[2]); + gr[TARGET_REG_R3] = tswap32(env->regs[3]); + gr[TARGET_REG_R4] = tswap32(env->regs[4]); + gr[TARGET_REG_R5] = tswap32(env->regs[5]); + gr[TARGET_REG_R6] = tswap32(env->regs[6]); + gr[TARGET_REG_R7] = tswap32(env->regs[7]); + gr[TARGET_REG_R8] = tswap32(env->regs[8]); + gr[TARGET_REG_R9] = tswap32(env->regs[9]); + gr[TARGET_REG_R10] = tswap32(env->regs[10]); + gr[TARGET_REG_R11] = tswap32(env->regs[11]); + gr[TARGET_REG_R12] = tswap32(env->regs[12]); + + gr[TARGET_REG_SP] = tswap32(env->regs[13]); + gr[TARGET_REG_LR] = tswap32(env->regs[14]); + gr[TARGET_REG_PC] = tswap32(env->regs[15]); + + if (mcp->mc_vfp_size != 0 && mcp->mc_vfp_ptr != NULL) { + /* see get_vfpcontext in sys/arm/arm/exec_machdep.c */ + target_mcontext_vfp_t *vfp = (target_mcontext_vfp_t *)mcp->mc_vfp_ptr; + for (int i = 0; i < 32; i++) { + vfp->mcv_reg[i] = tswap64(*aa32_vfp_dreg(env, i)); + } + vfp->mcv_fpscr = tswap32(vfp_get_fpscr(env)); + } + return err; +} + #endif /* !_TARGET_ARCH_SIGNAL_H_ */ -- 2.33.0