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[50.253.99.174]) by smtp.gmail.com with ESMTPSA id q7sm1133951ilv.48.2021.10.19.09.45.18 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 19 Oct 2021 09:45:19 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bsdimp-com.20210112.gappssmtp.com; s=20210112; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=ZXbvVPBD59OwL6sbB403nbXxdGqYeYt21ZqWQOQjYmA=; b=HRV+TB+o+0xeGJH+ld6FMuhgNIg7t1sRQ315Kwho3kYVqZGY1CGFIOIlCBJkdhMrAs Pkrs/q00o44DrQvQVRj24pLEyCH2HbKsYA9kCCuwFFmuxpISqdbyV0WIkBQv7VglYP0Q M9odOtG9tIPBWi7Jbn6bA9TVVFtbzmeS78s4M/IwMqN/IgUlvE4E1fZ6YexwP4krs3qs rb0JI+sSLom40Ku+BjYnOg6Sr6hCed+GjFt2sjpMcygm2RhS7tmC6OjLcGsb89PlQIEB yl1M0xpxnrfBQ1KcGy2+cbBJjNLH8Jh4R4ZvCF98TXa8kXn9ETSsNkX33ns95UQoHITg XsMA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=ZXbvVPBD59OwL6sbB403nbXxdGqYeYt21ZqWQOQjYmA=; b=7eNRxjtZsIc+vQfCHjVnOoMBUBTSBvQAo7kazkLdG57lNMbQ8yzkLiKW7xh/F4ipVs evk0WWAZwycynbc6k5OGSPLd1+do+UDEYBxEALESESbBr8qK6WzY/Ia9egKa87hdaeO5 LoKC423dcajRTlLHvSYdY/psE3TM+l3HFxg8MA2IGZ5zqJniztraOh1RG6Tw1b0CLJy4 YdX4wfp7nEEiM9dWY7MWwBs0CA9wXYB2P6Qr/l9W4/TDhYGYYupTGxyazPjVhFktEDw9 D0Rl0KkzXBniQ06Zi30hzZOjgoNi9HV2ZFQaxQd1aHlGdMH8JjEwl+P4bTpcAtLjiKGU y2Yg== X-Gm-Message-State: AOAM5336grfSmso+5k3pKaGJj/Ya9ricZ0Y7tuf1B39ckeTqxk/jrPQT tEvK0BzlW4aowKyki375sBxFYknrpW0+ww== X-Google-Smtp-Source: ABdhPJwsXDhJiThaZNAuzYbk9Z6YbHbjba6R5B8OScWpo3ZOD0zaUWoK4QOX7WkzceeTsLVS6eAFnw== X-Received: by 2002:a02:a18c:: with SMTP id n12mr4881340jah.130.1634661919765; Tue, 19 Oct 2021 09:45:19 -0700 (PDT) From: Warner Losh To: qemu-devel@nongnu.org Subject: [PATCH 13/24] bsd-user/arm/target_arch_thread.h: Routines to create and switch to a thread Date: Tue, 19 Oct 2021 10:44:36 -0600 Message-Id: <20211019164447.16359-14-imp@bsdimp.com> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20211019164447.16359-1-imp@bsdimp.com> References: <20211019164447.16359-1-imp@bsdimp.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: none client-ip=2607:f8b0:4864:20::d34; envelope-from=imp@bsdimp.com; helo=mail-io1-xd34.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=ham autolearn_force=no X-Spam_action: no action 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: Stacey Son , qemu-trivial@nongnu.org, Klye Evans , Michael Tokarev , Laurent Vivier , Warner Losh Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) X-ZM-MESSAGEID: 1634662694676100001 Content-Type: text/plain; charset="utf-8" Implement target_thread_init (to create a thread) and target_set_upcall (to switch to a thread) for arm. Signed-off-by: Stacey Son Signed-off-by: Klye Evans Signed-off-by: Warner Losh --- bsd-user/arm/target_arch_thread.h | 71 +++++++++++++++++++++++++++++++ 1 file changed, 71 insertions(+) create mode 100644 bsd-user/arm/target_arch_thread.h diff --git a/bsd-user/arm/target_arch_thread.h b/bsd-user/arm/target_arch_t= hread.h new file mode 100644 index 0000000000..317364bb84 --- /dev/null +++ b/bsd-user/arm/target_arch_thread.h @@ -0,0 +1,71 @@ +/* + * arm thread support + * + * Copyright (c) 2013 Stacey D. Son + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see . + */ +#ifndef _TARGET_ARCH_THREAD_H_ +#define _TARGET_ARCH_THREAD_H_ + +/* Compare to arm/arm/vm_machdep.c cpu_set_upcall_kse() */ +static inline void target_thread_set_upcall(CPUARMState *regs, abi_ulong e= ntry, + abi_ulong arg, abi_ulong stack_base, abi_ulong stack_size) +{ + abi_ulong sp; + + /* + * Make sure the stack is properly aligned. + * arm/include/param.h (STACKLIGN() macro) + */ + sp =3D (u_int)((stack_base + stack_size) - + sizeof(struct target_trapframe)) & ~0x7; + + /* sp =3D stack base */ + regs->regs[13] =3D sp; + /* pc =3D start function entry */ + regs->regs[15] =3D entry & 0xfffffffe; + /* r0 =3D arg */ + regs->regs[0] =3D arg; + regs->spsr =3D ARM_CPU_MODE_USR; + if (entry & 0x1) { + regs->spsr |=3D CPSR_T; + } +} + +static inline void target_thread_init(struct target_pt_regs *regs, + struct image_info *infop) +{ + abi_long stack =3D infop->start_stack; + memset(regs, 0, sizeof(*regs)); + regs->ARM_cpsr =3D 0x10; + if (infop->entry & 1) { + regs->ARM_cpsr |=3D CPSR_T; + } + regs->ARM_pc =3D infop->entry & 0xfffffffe; + regs->ARM_sp =3D infop->start_stack; + if (bsd_type =3D=3D target_freebsd) { + regs->ARM_lr =3D infop->entry & 0xfffffffe; + } + /* FIXME - what to for failure of get_user()? */ + get_user_ual(regs->ARM_r2, stack + 8); /* envp */ + get_user_ual(regs->ARM_r1, stack + 4); /* envp */ + /* XXX: it seems that r0 is zeroed after ! */ + regs->ARM_r0 =3D 0; + /* For uClinux PIC binaries. */ + /* XXX: Linux does this only on ARM with no MMU (do we care ?) */ + regs->ARM_r10 =3D infop->start_data; +} + +#endif /* !_TARGET_ARCH_THREAD_H_ */ --=20 2.32.0