[Just correcting the "larger" to be "smaller".] On 2019-Jan-4, at 19:29, Mark Millard <mark...@yahoo.com> wrote:
[qemu-aarch64-static has the same problem but qemu-armv7-sstatic does not. The context here is FreeBSD head -r341836 based and ports head -r488859 based.] Note: I assume that "struct target_freebsd_flock" is meant to match the memory layout of the target's native "struct flock". Otherwise the reported differences below could be irrelevant. For amd64 and aarch64 the following code: printf("sizeof(struct flock) = %lu\n", (unsigned long) sizeof(struct flock)); printf("l_start %lu\n", (unsigned long) offsetof(struct flock, l_start)); printf("l_len %lu\n", (unsigned long) offsetof(struct flock, l_len)); printf("l_pid %lu\n", (unsigned long) offsetof(struct flock, l_pid)); printf("l_type %lu\n", (unsigned long) offsetof(struct flock, l_type)); printf("l_whence %lu\n", (unsigned long) offsetof(struct flock, l_whence)); printf("l_sysid %lu\n", (unsigned long) offsetof(struct flock, l_sysid)); produces: sizeof(struct flock) = 32 l_start 0 l_len 8 l_pid 16 l_type 20 l_whence 22 l_sysid 24 However gdb reports for qemu-x86_64-static and qemu-aarch64-static and qemu-arm-static: (gdb) p/d sizeof(struct target_freebsd_flock) $10 = 28 (gdb) p/d &((struct target_freebsd_flock *)0)->l_start $11 = 0 (gdb) p/d &((struct target_freebsd_flock *)0)->l_len $12 = 8 (gdb) p/d &((struct target_freebsd_flock *)0)->l_pid $13 = 16 (gdb) p/d &((struct target_freebsd_flock *)0)->l_type $14 = 20 (gdb) p/d &((struct target_freebsd_flock *)0)->l_whence $15 = 22 (gdb) p/d &((struct target_freebsd_flock *)0)->l_sysid $16 = 24 So only the overall size is different for this information. But: struct target_freebsd_flock { int64_t l_start; int64_t l_len; int32_t l_pid; int16_t l_type; int16_t l_whence; int32_t l_sysid; } QEMU_PACKED; with a potential packed vs. /usr/include/sys/fcntl.h : struct flock { off_t l_start; /* starting offset */ off_t l_len; /* len = 0 means until end of file */ pid_t l_pid; /* lock owner */ short l_type; /* lock type: read/write, etc. */ short l_whence; /* type of l_start */ int l_sysid; /* remote system id or zero for local */ }; with no potential __packed. === Mark Millard marklmi at yahoo.com ( dsl-only.net went away in early 2018-Mar) _______________________________________________ freebsd-ports@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-ports To unsubscribe, send any mail to "freebsd-ports-unsubscr...@freebsd.org"