From patchwork Mon Dec 15 10:05:56 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Linus Walleij X-Patchwork-Id: 421076 X-Patchwork-Delegate: trini@ti.com Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from theia.denx.de (theia.denx.de [85.214.87.163]) by ozlabs.org (Postfix) with ESMTP id 3DD4A1400D2 for ; Mon, 15 Dec 2014 21:06:14 +1100 (AEDT) Received: from localhost (localhost [127.0.0.1]) by theia.denx.de (Postfix) with ESMTP id 7DA4D4B9D1; Mon, 15 Dec 2014 11:06:12 +0100 (CET) Received: from theia.denx.de ([127.0.0.1]) by localhost (theia.denx.de [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 4Hd1gclJivkm; Mon, 15 Dec 2014 11:06:12 +0100 (CET) Received: from theia.denx.de (localhost [127.0.0.1]) by theia.denx.de (Postfix) with ESMTP id E208A4B99C; Mon, 15 Dec 2014 11:06:11 +0100 (CET) Received: from localhost (localhost [127.0.0.1]) by theia.denx.de (Postfix) with ESMTP id 484C74B9CB for ; Mon, 15 Dec 2014 11:06:06 +0100 (CET) Received: from theia.denx.de ([127.0.0.1]) by localhost (theia.denx.de [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id vfslGO14Fjg9 for ; Mon, 15 Dec 2014 11:06:06 +0100 (CET) X-policyd-weight: NOT_IN_SBL_XBL_SPAMHAUS=-1.5 NOT_IN_SPAMCOP=-1.5 NOT_IN_BL_NJABL=-1.5 (only DNSBL check requested) Received: from mail-wi0-f180.google.com (mail-wi0-f180.google.com [209.85.212.180]) by theia.denx.de (Postfix) with ESMTPS id 19F814B9C1 for ; Mon, 15 Dec 2014 11:06:02 +0100 (CET) Received: by mail-wi0-f180.google.com with SMTP id n3so8397999wiv.13 for ; Mon, 15 Dec 2014 02:06:01 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id; bh=AnwrcDcGOEPmPf9lc0xQWlZoPbbaoZi+NKTdAetTeA4=; b=h2LhDDbJ7/Arwc/dvFsEzrlKhBVhI6LMxdstczing+abWq/EB8PjdUrrvHqJG7J0nR 19dstVG3mO7Ejej/6LxFkt/dcK6gr2OPpysTIFEqw5WAEiWWs/jUk6lkNCBZW/TeS82e 8WAUKm4KRKZTHlziahoxhJRuOk0PXdwg3ua0TnkobedG37ECXO6XKHODtPupRRQj6gRe ZUHHeScfsZIcvI+cLyQVhMcbspb5ZcvSQTLG6d/dIqIgx/na56+zqWGsvJ+/9qhdNK2O nEsU1tOBSH4Tg8fgBJ+pdL4onE15vZeXYjE0iZ9sxqgK/HLN8pkFovOTCvjzOZJGv1pE h8dg== X-Gm-Message-State: ALoCoQkBuyO5bm9Pu2dPJ2jllPkE5JiXOf50BjqzF0tcBugqMrIoyvwMlxeqpn/kfGMrxPy2Haom X-Received: by 10.180.211.34 with SMTP id mz2mr22220549wic.56.1418637960883; Mon, 15 Dec 2014 02:06:00 -0800 (PST) Received: from localhost.localdomain ([85.235.11.236]) by mx.google.com with ESMTPSA id mu5sm5112171wic.18.2014.12.15.02.05.59 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 15 Dec 2014 02:06:00 -0800 (PST) From: Linus Walleij To: u-boot@lists.denx.de, Albert Aribaud , Steve Rae Date: Mon, 15 Dec 2014 11:05:56 +0100 Message-Id: <1418637956-23516-1-git-send-email-linus.walleij@linaro.org> X-Mailer: git-send-email 1.9.3 Cc: u-boot-review@google.com, Mark Hambleton , Tom Rini , Darwin Rambo Subject: [U-Boot] [PATCH 2/3 v2] arm: semihosting: fix up compile bugs X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.13 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: u-boot-bounces@lists.denx.de Errors-To: u-boot-bounces@lists.denx.de There is currently a regression when using newer ARM64 compilers for semihosting: the way long types are inferred from context is no longer the same. The semihosting runtime uses long and size_t, so use this explicitly in the semihosting code and interface, and voila: the code now works again. Tested with aarch64-linux-gnu-gcc: Linaro GCC 4.9-2014.09. Cc: Darwin Rambo Cc: AKASHI Takahiro Cc: Mark Hambleton Cc: Tom Rini Acked-by: Steve Rae Suggested-by: Mark Hambleton Signed-off-by: Linus Walleij --- ChangeLog v1->v2: - Fix fd leak in smh_len() - Fix up return type on smh_len() - Add Steve's ACK. --- arch/arm/include/asm/semihosting.h | 2 +- arch/arm/lib/semihosting.c | 101 +++++++++++++++++++------------------ 2 files changed, 53 insertions(+), 50 deletions(-) diff --git a/arch/arm/include/asm/semihosting.h b/arch/arm/include/asm/semihosting.h index e59b44ed6068..835ca7e4b683 100644 --- a/arch/arm/include/asm/semihosting.h +++ b/arch/arm/include/asm/semihosting.h @@ -12,6 +12,6 @@ * code for more information. */ int smh_load(const char *fname, void *memp, int avail, int verbose); -int smh_len(const char *fname); +long smh_len(const char *fname); #endif /* __SEMIHOSTING_H__ */ diff --git a/arch/arm/lib/semihosting.c b/arch/arm/lib/semihosting.c index 92bbabe158fe..e9d524e18aca 100644 --- a/arch/arm/lib/semihosting.c +++ b/arch/arm/lib/semihosting.c @@ -23,17 +23,17 @@ #define MODE_READ 0x0 #define MODE_READBIN 0x1 -static int smh_read(int fd, void *memp, int len); -static int smh_open(const char *fname, char *modestr); -static int smh_close(int fd); -static int smh_len_fd(int fd); +static long smh_read(long fd, void *memp, size_t len); +static long smh_open(const char *fname, char *modestr); +static long smh_close(long fd); +static long smh_len_fd(long fd); /* * Call the handler */ -static int smh_trap(unsigned int sysnum, void *addr) +static long smh_trap(unsigned int sysnum, void *addr) { - register int result asm("r0"); + register long result asm("r0"); #if defined(CONFIG_ARM64) asm volatile ("hlt #0xf000" : "=r" (result) : "0"(sysnum), "r"(addr)); #else @@ -51,7 +51,9 @@ static int smh_trap(unsigned int sysnum, void *addr) */ int smh_load(const char *fname, void *memp, int avail, int verbose) { - int ret, fd, len; + long ret; + long fd; + size_t len; ret = -1; @@ -61,21 +63,21 @@ int smh_load(const char *fname, void *memp, int avail, int verbose) /* Open the file */ fd = smh_open(fname, "rb"); if (fd == -1) - return ret; + return -1; /* Get the file length */ ret = smh_len_fd(fd); if (ret == -1) { smh_close(fd); - return ret; + return -1; } /* Check that the file will fit in the supplied buffer */ if (ret > avail) { - printf("%s: ERROR ret %d, avail %u\n", __func__, ret, + printf("%s: ERROR ret %ld, avail %u\n", __func__, ret, avail); smh_close(fd); - return ret; + return -1; } len = ret; @@ -87,7 +89,7 @@ int smh_load(const char *fname, void *memp, int avail, int verbose) if (verbose) { printf("\n%s\n", fname); printf(" 0x%8p dest\n", memp); - printf(" 0x%08x size\n", len); + printf(" 0x%08lx size\n", len); printf(" 0x%08x avail\n", avail); } } @@ -101,54 +103,53 @@ int smh_load(const char *fname, void *memp, int avail, int verbose) /* * Read 'len' bytes of file into 'memp'. Returns 0 on success, else failure */ -static int smh_read(int fd, void *memp, int len) +static long smh_read(long fd, void *memp, size_t len) { - int ret; + long ret; struct smh_read_s { - int fd; + long fd; void *memp; - int len; + size_t len; } read; - debug("%s: fd %d, memp %p, len %d\n", __func__, fd, memp, len); + debug("%s: fd %ld, memp %p, len %lu\n", __func__, fd, memp, len); read.fd = fd; read.memp = memp; read.len = len; ret = smh_trap(SYSREAD, &read); - if (ret == 0) { - return 0; - } else { + if (ret < 0) { /* * The ARM handler allows for returning partial lengths, * but in practice this never happens so rather than create * hard to maintain partial read loops and such, just fail * with an error message. */ - printf("%s: ERROR ret %d, fd %d, len %u memp %p\n", + printf("%s: ERROR ret %ld, fd %ld, len %lu memp %p\n", __func__, ret, fd, len, memp); + return -1; } - return ret; + + return 0; } /* * Open a file on the host. Mode is "r" or "rb" currently. Returns a file * descriptor or -1 on error. */ -static int smh_open(const char *fname, char *modestr) +static long smh_open(const char *fname, char *modestr) { - int ret, fd, mode; + long fd; + unsigned long mode; struct smh_open_s { const char *fname; - unsigned int mode; - unsigned int len; + unsigned long mode; + size_t len; } open; debug("%s: file \'%s\', mode \'%s\'\n", __func__, fname, modestr); - ret = -1; - /* Check the file mode */ if (!(strcmp(modestr, "r"))) { mode = MODE_READ; @@ -157,7 +158,7 @@ static int smh_open(const char *fname, char *modestr) } else { printf("%s: ERROR mode \'%s\' not supported\n", __func__, modestr); - return ret; + return -1; } open.fname = fname; @@ -167,7 +168,7 @@ static int smh_open(const char *fname, char *modestr) /* Open the file on the host */ fd = smh_trap(SYSOPEN, &open); if (fd == -1) - printf("%s: ERROR fd %d for file \'%s\'\n", __func__, fd, + printf("%s: ERROR fd %ld for file \'%s\'\n", __func__, fd, fname); return fd; @@ -176,17 +177,15 @@ static int smh_open(const char *fname, char *modestr) /* * Close the file using the file descriptor */ -static int smh_close(int fd) +static long smh_close(long fd) { - int ret; - long fdlong; + long ret; - debug("%s: fd %d\n", __func__, fd); + debug("%s: fd %ld\n", __func__, fd); - fdlong = (long)fd; - ret = smh_trap(SYSCLOSE, &fdlong); + ret = smh_trap(SYSCLOSE, &fd); if (ret == -1) - printf("%s: ERROR fd %d\n", __func__, fd); + printf("%s: ERROR fd %ld\n", __func__, fd); return ret; } @@ -194,17 +193,15 @@ static int smh_close(int fd) /* * Get the file length from the file descriptor */ -static int smh_len_fd(int fd) +static long smh_len_fd(long fd) { - int ret; - long fdlong; + long ret; - debug("%s: fd %d\n", __func__, fd); + debug("%s: fd %ld\n", __func__, fd); - fdlong = (long)fd; - ret = smh_trap(SYSFLEN, &fdlong); + ret = smh_trap(SYSFLEN, &fd); if (ret == -1) - printf("%s: ERROR ret %d\n", __func__, ret); + printf("%s: ERROR ret %ld, fd %ld\n", __func__, ret, fd); return ret; } @@ -212,26 +209,32 @@ static int smh_len_fd(int fd) /* * Get the file length from the filename */ -int smh_len(const char *fname) +long smh_len(const char *fname) { - int ret, fd, len; + long ret; + long fd; + long len; debug("%s: file \'%s\'\n", __func__, fname); /* Open the file */ fd = smh_open(fname, "rb"); - if (fd == -1) + if (fd < 0) return fd; /* Get the file length */ len = smh_len_fd(fd); + if (len < 0) { + smh_close(fd); + return len; + } /* Close the file */ ret = smh_close(fd); - if (ret == -1) + if (ret < 0) return ret; - debug("%s: returning len %d\n", __func__, len); + debug("%s: returning len %ld\n", __func__, len); /* Return the file length (or -1 error indication) */ return len;