From: Alan Cox <alan@linux.intel.com>
Date: Sat, 26 Dec 2015 23:01:29 +0000 (+0000)
Subject: inode.c: gcc 6809 workaround
X-Git-Url: https://git.ndcode.org/public/gitweb.cgi?a=commitdiff_plain;h=b063c050df82b75fde3e7a3e57021fa11148f71c;p=FUZIX.git

inode.c: gcc 6809 workaround
---

diff --git a/Kernel/inode.c b/Kernel/inode.c
index aa8b63fd..d7b13d60 100644
--- a/Kernel/inode.c
+++ b/Kernel/inode.c
@@ -94,7 +94,10 @@ void readi(inoptr ino, uint8_t flag)
 
 				brelse(bp);
 			}
-
+			/* Bletch */
+#if defined(__M6809__)
+                        gcc_miscompile_workaround();
+#endif                        
 			udata.u_base += amount;
 			udata.u_offset += amount;
 			if (ispipe && udata.u_offset >= 18 * BLKSIZE)
@@ -173,6 +176,12 @@ void writei(inoptr ino, uint8_t flag)
 		while (towrite) {
 			amount = min(towrite, BLKSIZE - BLKOFF(udata.u_offset));
 
+                        if (udata.u_offset >> BLKOVERSIZE) {
+                                udata.u_error = EFBIG;
+                                ssig(udata.u_ptab, SIGXFSZ);
+                                break;
+                        }
+
 			if ((pblk =
 			     bmap(ino, udata.u_offset >> BLKSHIFT,
 				  0)) == NULLBLK)
@@ -279,8 +288,6 @@ inoptr rwsetup(bool is_read, uint8_t * flag)
 		oftp->o_ptr = ino->c_node.i_size;
 	/* Initialize u_offset from file pointer */
 	udata.u_offset = oftp->o_ptr;
-	/* FIXME: for 32bit we will need to check for overflow of the
-           file size here in the r/w inode code */
 	return (ino);
 }