From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 94516C43334 for ; Tue, 28 Jun 2022 06:50:01 +0000 (UTC) Received: from localhost ([::1]:52858 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1o652u-0007cl-L9 for qemu-devel@archiver.kernel.org; Tue, 28 Jun 2022 02:50:00 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:43710) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1o63GB-0003dR-Dq for qemu-devel@nongnu.org; Tue, 28 Jun 2022 00:55:35 -0400 Received: from mail-pg1-x536.google.com ([2607:f8b0:4864:20::536]:33711) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1o63G9-0000G4-JG for qemu-devel@nongnu.org; Tue, 28 Jun 2022 00:55:35 -0400 Received: by mail-pg1-x536.google.com with SMTP id z14so11119047pgh.0 for ; Mon, 27 Jun 2022 21:55:33 -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=e0dAQ/YOvhpKY6EYJN7zTJpG6M7hET9zvzuE2OXVj4w=; b=kR6vAJgvPy9rX0YSGbP9GJZ+JljizWuAmR/XtmMbR7NVC0+ss8+a1Fthg/hUYOMXUX TNUHvcplcW17YttQl+pgF6j0rxV983cIVuRs+EPI9lctuKUeMKFmrW8ueWW3jrzRXIzq RoR6SC4nHralehXTr4o41hWKUs9WrOT3Cjc8FgNcV7hei1ascMT4j/OmU8HT+pNGTx0m Hq5S9GMb71/ygnLRQXl/BWgMRJJMBEERQJ0urMh+WlERpdS4h3Go+DYoY0wrw+O/ouRf DzXfgaaMNY2BtL9ox4OXvp0kwFrIb8Fn7WovuPIdyS9XFuCFHK2pcsimnyP5LPJ+Y7Eh AZxg== 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=e0dAQ/YOvhpKY6EYJN7zTJpG6M7hET9zvzuE2OXVj4w=; b=4CL1qr/4fNGACf3jRR5Rfe5vUZxilVCSk/Hh9KH4y7JyOeFZsXyDHrUyoD+VPlkbu/ ZovOECKw/G7ZmreNG0GI5se9SJl3q0FFrvZlAHJND0tPQFaEMWK7qQqR0pZquuixy9r9 Ho4sFfCol5VUrdlyqxTvLmYxtF3M/dKqTyoryaWOOTg8k9g4MpUaFymVi1piwexoWtaH MBTQCx9dxMoyZE6+XthXDG5Pic4ayKwYmGJ7M6i0CNuIuTeWA68f169jf6YVPhDEySg+ DCgXCa35eJsBWqlUoxF2hz8Nx0Np7zVj/vLNZfKoJKhrHcI6MPVTRzqC1acrXILOvczw Kd1w== X-Gm-Message-State: AJIora/8xLMXmLZInhwDs7fZu9V6BdAPeGAapBQ4tM6JaFPdBNBDTM4F KaAw7wrPeLOVhGn62M2vkC0mgr9bUleVkA== X-Google-Smtp-Source: AGRyM1vuOknkTdwWY4CaO3zq89MamJjnEfbGAgK8AjWDtcG4fMCjZD3z3HLWxWHzRPSSB8/Tpjx+8g== X-Received: by 2002:a65:4907:0:b0:3fd:bc3e:fb0a with SMTP id p7-20020a654907000000b003fdbc3efb0amr15350938pgs.123.1656392132293; Mon, 27 Jun 2022 21:55:32 -0700 (PDT) Received: from stoup.. ([122.255.60.245]) by smtp.gmail.com with ESMTPSA id w8-20020a1709026f0800b00168c523032fsm8073735plk.269.2022.06.27.21.55.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 27 Jun 2022 21:55:31 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Cc: Luc Michel Subject: [PULL 34/60] semihosting: Split out semihost_sys_flen Date: Tue, 28 Jun 2022 10:23:37 +0530 Message-Id: <20220628045403.508716-35-richard.henderson@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220628045403.508716-1-richard.henderson@linaro.org> References: <20220628045403.508716-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=2607:f8b0:4864:20::536; envelope-from=richard.henderson@linaro.org; helo=mail-pg1-x536.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+qemu-devel=archiver.kernel.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. Reviewed-by: Luc Michel Signed-off-by: Richard Henderson --- include/semihosting/syscalls.h | 4 ++ semihosting/arm-compat-semi.c | 74 ++++++---------------------------- semihosting/syscalls.c | 49 ++++++++++++++++++++++ 3 files changed, 66 insertions(+), 61 deletions(-) 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 3cdc2b6efc..68e13d9077 100644 --- a/semihosting/arm-compat-semi.c +++ b/semihosting/arm-compat-semi.c @@ -285,44 +285,25 @@ 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 = EFAULT; + } else { + size = be64_to_cpu(size); + if (ret != size) { + ret = -1, err = 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 @@ -340,27 +321,6 @@ 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. * @@ -379,7 +339,6 @@ 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; @@ -493,12 +452,8 @@ 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: @@ -820,9 +775,6 @@ 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 1f1baf7e2d..fff9550c89 100644 --- a/semihosting/syscalls.c +++ b/semihosting/syscalls.c @@ -127,6 +127,12 @@ 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. */ @@ -259,6 +265,18 @@ static void host_isatty(CPUState *cs, gdb_syscall_complete_cb complete, complete(cs, ret, ret ? 0 : errno); } +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); + } else { + complete(cs, buf.st_size, 0); + } +} + /* * Static file semihosting syscall implementations. */ @@ -311,6 +329,12 @@ 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. */ @@ -473,3 +497,28 @@ 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, 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(); + } +} -- 2.34.1