From patchwork Sat May 21 00:03:41 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Richard Henderson X-Patchwork-Id: 574938 Delivered-To: patch@linaro.org Received: by 2002:a05:7000:1f0e:0:0:0:0 with SMTP id hs14csp2680839mab; Fri, 20 May 2022 17:57:51 -0700 (PDT) X-Google-Smtp-Source: ABdhPJwBh+PK8ycovPO60sqO1GaA0G/6gCnnNhLvMydUbGcTFDVjLS45geDY19FWyCoDuEHVW7mD X-Received: by 2002:a05:620a:1a83:b0:6a0:993:6a9b with SMTP id bl3-20020a05620a1a8300b006a009936a9bmr8047989qkb.434.1653094671361; Fri, 20 May 2022 17:57:51 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1653094671; cv=none; d=google.com; s=arc-20160816; b=ugv/gsUAkbGXS431lMscMV0b2jPZaBFZE0Mu3Hu4k8/7CA2HhWozCIgKF8abEvSQH3 tb4qFUDDa/E2H1v3zcieH9gWXyKaCIjayaDGh9Vdt8glZRh8af5oY6EQfs5EJ49/2fir RLokYIG9b0+guKiqzsh/7SGWBr+S/1v4OCbQnEdZ4UwuByZD78JV0hN1EPW57idGrTW0 bL5aVoOeWcdquTr4mtoz0FXfJ9nRdiUDNZ3VNUyIqosF0g5/pl/PaymVCFhKH3ZoWjsL qJdbqyFV45S0qyhXJsHUaepmsizmSD4XFDGiIxOy2fkLCVlMerKKo9VFy9A/W/lvee8z ByXA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=sender:errors-to:list-subscribe:list-help:list-post:list-archive :list-unsubscribe:list-id:precedence:content-transfer-encoding :mime-version:references:in-reply-to:message-id:date:subject:cc:to :from:dkim-signature; bh=TzUwl9qms3llKSXLrofbP99q2dV9evxhKXHM3ias5fg=; b=ZuAex19cp4P0rFirkl84VZwd2PyptlF173n1cIc9PyVPDDx0fEhSfZvwvhRcnxTFLZ OnGbvdCZ/eSwwGgycvUgnoL9rLTfI3N2JrzTJI1p3XKN0mqaZigzrhR3IrCaqt9t8wRE aLO6MNMSi5+q4wWWFC6LRw44XFb4X7wi8EAUODxsO5Hr5eGdPeiHBw/mPLx/c93Im7Nv met9aQbNM8LrGFcDIRTAw8XDPrv/sHWgI1cBeNECO8vtnjcJPzlRFda3kmfOxu6rJq8c 5Xar5wJ9AQHByt6AxHtKkK4ORRGcDUsg4wE+5jwGt4lQLcopTGIAYVIjky3c/MR6jdX2 7u9Q== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@linaro.org header.s=google header.b=xLTKpjl7; spf=pass (google.com: domain of qemu-devel-bounces+patch=linaro.org@nongnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom="qemu-devel-bounces+patch=linaro.org@nongnu.org"; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linaro.org Return-Path: Received: from lists.gnu.org (lists.gnu.org. [209.51.188.17]) by mx.google.com with ESMTPS id 9-20020a0562140d6900b004443866e7fdsi471254qvs.77.2022.05.20.17.57.51 for (version=TLS1_2 cipher=ECDHE-ECDSA-CHACHA20-POLY1305 bits=256/256); Fri, 20 May 2022 17:57:51 -0700 (PDT) Received-SPF: pass (google.com: domain of qemu-devel-bounces+patch=linaro.org@nongnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; Authentication-Results: mx.google.com; dkim=pass header.i=@linaro.org header.s=google header.b=xLTKpjl7; spf=pass (google.com: domain of qemu-devel-bounces+patch=linaro.org@nongnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom="qemu-devel-bounces+patch=linaro.org@nongnu.org"; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linaro.org Received: from localhost ([::1]:40122 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nsDRG-0001uw-VZ for patch@linaro.org; Fri, 20 May 2022 20:57:50 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:59620) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nsCc6-0008CC-Bi for qemu-devel@nongnu.org; Fri, 20 May 2022 20:05:00 -0400 Received: from mail-pj1-x102c.google.com ([2607:f8b0:4864:20::102c]:34072) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1nsCbl-000429-CX for qemu-devel@nongnu.org; Fri, 20 May 2022 20:04:49 -0400 Received: by mail-pj1-x102c.google.com with SMTP id ob14-20020a17090b390e00b001dff2a43f8cso2445022pjb.1 for ; Fri, 20 May 2022 17:04:36 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=TzUwl9qms3llKSXLrofbP99q2dV9evxhKXHM3ias5fg=; b=xLTKpjl7z/VKNrW0RL+BeVNnK5pkLHdeJqH/kBfk7HfpchqFSi2T9JNOfo4PAVWLAD SOAuJgmbDOfnzOxKe8EwBk+xBCblscU+EhMJ2wJpaWFaMMl+ATDlZr6u2Gp5FCzWHLrD BG0mylVkj7u/FzsnmEBJiPS3yd309wAJYZ6kfDYzPem1ML7+Oye/5zcLLGU+LlLZ0owQ 5Ph8LezMzLl6pebrsBiW4fHDknAyyRl2mlrTPHDIMI6GwR73ZHu5TnEeDKLYseODChHe 9vk17KiuV30Iw/awPSUp0WwJZV3cB6OGJvFjARNelJWqNSnmGBtmxeZxtPc6YVuhVfT7 +Tmw== 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=TzUwl9qms3llKSXLrofbP99q2dV9evxhKXHM3ias5fg=; b=AGTrbNslOPCf9oUMQ+RmkhZNwgvWBCT2jSeT2GPj3DZ7m2SSqIpUPCgX3X0HbeqJhn aBoeaQk4TZaQNLwbhGYAdnQNExqdhNK8QhbNiUfhbuOxWG4B63iTi2DRIbl3T35RHdia NfODtM1Y4GMeeRj4TYupFfGreofsrxpIYudIgGDsKDMrErkg9ODbfHaaJS9AU2POxhpg wnfskLzgROGJMkjUYVrN6Z/9gd5S4HpsaVPLPfQCJuADjGsBiCPy9rLREVzFOZDdDou4 oR7oSmtI6jETtNS5UeZRTONuOvK8pfd2qaKzeFScfbQ+US+lf+aAK+zOEvWKgWn0AlI8 HRUg== X-Gm-Message-State: AOAM533aTYwGEgJYNcS52qyDwU0dxLmBCFFAZJPrJ1iAaqhNt+elUpMJ VJ+mpqHY+HUgggJmgZCa2Md3N6jnG9sZ6g== X-Received: by 2002:a17:90b:3708:b0:1df:56ac:65c6 with SMTP id mg8-20020a17090b370800b001df56ac65c6mr14315066pjb.23.1653091476005; Fri, 20 May 2022 17:04:36 -0700 (PDT) Received: from stoup.. ([71.212.142.129]) by smtp.gmail.com with ESMTPSA id h8-20020a654808000000b003f9d1c020cbsm306369pgs.51.2022.05.20.17.04.35 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 20 May 2022 17:04:35 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Cc: peter.maydell@linaro.org, alex.bennee@linaro.org Subject: [PATCH v3 30/49] semihosting: Split out semihost_sys_flen Date: Fri, 20 May 2022 17:03:41 -0700 Message-Id: <20220521000400.454525-31-richard.henderson@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220521000400.454525-1-richard.henderson@linaro.org> References: <20220521000400.454525-1-richard.henderson@linaro.org> MIME-Version: 1.0 Received-SPF: pass client-ip=2607:f8b0:4864:20::102c; envelope-from=richard.henderson@linaro.org; helo=mail-pj1-x102c.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 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+patch=linaro.org@nongnu.org Sender: "Qemu-devel" The ARM-specific SYS_FLEN isn't really something that can be reused by other semihosting apis, but there are parts that can reused for the implementation of semihost_sys_fstat. Signed-off-by: Richard Henderson --- include/exec/gdbstub.h | 1 + include/semihosting/syscalls.h | 4 ++ semihosting/arm-compat-semi.c | 74 ++++++---------------------------- semihosting/syscalls.c | 49 ++++++++++++++++++++++ 4 files changed, 67 insertions(+), 61 deletions(-) diff --git a/include/exec/gdbstub.h b/include/exec/gdbstub.h index fd4bc4e937..8e9cdcb1c1 100644 --- a/include/exec/gdbstub.h +++ b/include/exec/gdbstub.h @@ -42,6 +42,7 @@ #define GDB_ENAMETOOLONG 91 #define GDB_EUNKNOWN 9999 #define GDB_ENOTTY GDB_EUNKNOWN +#define GDB_EOVERFLOW GDB_EUNKNOWN /* For gdb file i/o remote protocol lseek whence. */ #define GDB_SEEK_SET 0 diff --git a/include/semihosting/syscalls.h b/include/semihosting/syscalls.h index c60ebafb85..1ae5ba6716 100644 --- a/include/semihosting/syscalls.h +++ b/include/semihosting/syscalls.h @@ -45,4 +45,8 @@ void semihost_sys_lseek(CPUState *cs, gdb_syscall_complete_cb complete, void semihost_sys_isatty(CPUState *cs, gdb_syscall_complete_cb complete, int fd); +void semihost_sys_flen(CPUState *cs, gdb_syscall_complete_cb fstat_cb, + gdb_syscall_complete_cb flen_cb, + int fd, target_ulong fstat_addr); + #endif /* SEMIHOSTING_SYSCALLS_H */ diff --git a/semihosting/arm-compat-semi.c b/semihosting/arm-compat-semi.c index 973b0a68ab..5dd8c800cc 100644 --- a/semihosting/arm-compat-semi.c +++ b/semihosting/arm-compat-semi.c @@ -272,44 +272,25 @@ static target_ulong common_semi_flen_buf(CPUState *cs) } static void -common_semi_flen_cb(CPUState *cs, target_ulong ret, target_ulong err) +common_semi_flen_fstat_cb(CPUState *cs, target_ulong ret, target_ulong err) { if (!err) { /* The size is always stored in big-endian order, extract the value. */ uint64_t size; - cpu_memory_rw_debug(cs, common_semi_flen_buf(cs) + - offsetof(struct gdb_stat, gdb_st_size), - &size, 8, 0); - ret = be64_to_cpu(size); + if (cpu_memory_rw_debug(cs, common_semi_flen_buf(cs) + + offsetof(struct gdb_stat, gdb_st_size), + &size, 8, 0)) { + ret = -1, err = GDB_EFAULT; + } else { + size = be64_to_cpu(size); + if (ret != size) { + ret = -1, err = GDB_EOVERFLOW; + } + } } common_semi_cb(cs, ret, err); } -/* - * Types for functions implementing various semihosting calls - * for specific types of guest file descriptor. These must all - * do the work and return the required return value to the guest - * via common_semi_cb. - */ -typedef void sys_flenfn(CPUState *cs, GuestFD *gf); - -static void host_flenfn(CPUState *cs, GuestFD *gf) -{ - struct stat buf; - - if (fstat(gf->hostfd, &buf)) { - common_semi_cb(cs, -1, errno); - } else { - common_semi_cb(cs, buf.st_size, 0); - } -} - -static void gdb_flenfn(CPUState *cs, GuestFD *gf) -{ - gdb_do_syscall(common_semi_flen_cb, "fstat,%x,%x", - gf->hostfd, common_semi_flen_buf(cs)); -} - #define SHFB_MAGIC_0 0x53 #define SHFB_MAGIC_1 0x48 #define SHFB_MAGIC_2 0x46 @@ -327,27 +308,6 @@ static const uint8_t featurefile_data[] = { SH_EXT_EXIT_EXTENDED | SH_EXT_STDOUT_STDERR, /* Feature byte 0 */ }; -static void staticfile_flenfn(CPUState *cs, GuestFD *gf) -{ - common_semi_cb(cs, gf->staticfile.len, 0); -} - -typedef struct GuestFDFunctions { - sys_flenfn *flenfn; -} GuestFDFunctions; - -static const GuestFDFunctions guestfd_fns[] = { - [GuestFDHost] = { - .flenfn = host_flenfn, - }, - [GuestFDGDB] = { - .flenfn = gdb_flenfn, - }, - [GuestFDStatic] = { - .flenfn = staticfile_flenfn, - }, -}; - /* * Do a semihosting call. * @@ -366,7 +326,6 @@ void do_common_semihosting(CPUState *cs) char * s; int nr; uint32_t ret; - GuestFD *gf; int64_t elapsed; nr = common_semi_arg(cs, 0) & 0xffffffffU; @@ -479,12 +438,8 @@ void do_common_semihosting(CPUState *cs) case TARGET_SYS_FLEN: GET_ARG(0); - - gf = get_guestfd(arg0); - if (!gf) { - goto do_badf; - } - guestfd_fns[gf->type].flenfn(cs, gf); + semihost_sys_flen(cs, common_semi_flen_fstat_cb, common_semi_cb, + arg0, common_semi_flen_buf(cs)); break; case TARGET_SYS_TMPNAM: @@ -806,9 +761,6 @@ void do_common_semihosting(CPUState *cs) cpu_dump_state(cs, stderr, 0); abort(); - do_badf: - common_semi_cb(cs, -1, EBADF); - break; do_fault: common_semi_cb(cs, -1, EFAULT); break; diff --git a/semihosting/syscalls.c b/semihosting/syscalls.c index 702541b270..1425156bf6 100644 --- a/semihosting/syscalls.c +++ b/semihosting/syscalls.c @@ -157,6 +157,12 @@ static void gdb_isatty(CPUState *cs, gdb_syscall_complete_cb complete, gdb_do_syscall(complete, "isatty,%x", (target_ulong)gf->hostfd); } +static void gdb_fstat(CPUState *cs, gdb_syscall_complete_cb complete, + GuestFD *gf, target_ulong addr) +{ + gdb_do_syscall(complete, "fstat,%x,%x", (target_ulong)gf->hostfd, addr); +} + /* * Host semihosting syscall implementations. */ @@ -289,6 +295,18 @@ static void host_isatty(CPUState *cs, gdb_syscall_complete_cb complete, complete(cs, ret, ret ? 0 : errno_for_gdb()); } +static void host_flen(CPUState *cs, gdb_syscall_complete_cb complete, + GuestFD *gf) +{ + struct stat buf; + + if (fstat(gf->hostfd, &buf) < 0) { + complete(cs, -1, errno_for_gdb()); + } else { + complete(cs, buf.st_size, 0); + } +} + /* * Static file semihosting syscall implementations. */ @@ -341,6 +359,12 @@ static void staticfile_lseek(CPUState *cs, gdb_syscall_complete_cb complete, } } +static void staticfile_flen(CPUState *cs, gdb_syscall_complete_cb complete, + GuestFD *gf) +{ + complete(cs, gf->staticfile.len, 0); +} + /* * Syscall entry points. */ @@ -503,3 +527,28 @@ void semihost_sys_isatty(CPUState *cs, gdb_syscall_complete_cb complete, int fd) g_assert_not_reached(); } } + +void semihost_sys_flen(CPUState *cs, gdb_syscall_complete_cb fstat_cb, + gdb_syscall_complete_cb flen_cb, int fd, + target_ulong fstat_addr) +{ + GuestFD *gf = get_guestfd(fd); + + if (!gf) { + flen_cb(cs, -1, GDB_EBADF); + return; + } + switch (gf->type) { + case GuestFDGDB: + gdb_fstat(cs, fstat_cb, gf, fstat_addr); + break; + case GuestFDHost: + host_flen(cs, flen_cb, gf); + break; + case GuestFDStatic: + staticfile_flen(cs, flen_cb, gf); + break; + default: + g_assert_not_reached(); + } +}