In [1] Idwer Vollering noted, that the type `u64` is not portable so
on his FreeBSD system, the following warning is shown.
$ clang -O2 -Wall -W -I/usr/local/include -c -o amb.o amb.c
amb.c:441:22: error: use of undeclared identifier 'u64'
ambconfig_phys = ((u64)pci_read_long(dev16, 0x4c) << 32) |
The type `uint64_t` seems to be defined also on FreeBSD, so using this
fixes the warning.
Note, this warning is not reproducable with Debian Sid/unstable for
example. I have no idea why though.
[1] http://review.coreboot.org/#/c/3015/
Change-Id: Ic22f4371114b68ae8221d84a01fef6888d43f365
Signed-off-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-on: http://review.coreboot.org/3086
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
When building inteltool under x86-32, the following warnings are
shown.
$ gcc --version
gcc-4.7.real (Debian 4.7.2-15) 4.7.2
Copyright (C) 2012 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
$ make
[…]
amb.c: In function ‘amb_read_config32’:
amb.c:31:23: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
amb.c:31:10: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
amb.c: In function ‘amb_read_config16’:
amb.c:45:23: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
amb.c:45:10: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
amb.c: In function ‘amb_read_config8’:
amb.c:60:22: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
amb.c:60:10: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
[…]
Nico Huber commented the following [1].
I don't see those warnings because I build for x86-64. I guess
they could be fixed by casting to `ptrdiff_t` (from stddef.h)
instead of `uint64_t`.
And indeed, using `ptrdiff_t` fixes the warning. But as Stefan
Reinauer commented in [2], `intptr_t` is more appropriate as this
is just a pointer and no pointer difference.
So `intptr_t` is taken, which fixes these issues warned about too.
These warnings were introduced in commit »inteltool: Add support for
dumping AMB registers« (4b7b320f) [3].
[1] http://review.coreboot.org/#/c/2996/1//COMMIT_MSG
[2] http://review.coreboot.org/#/c/3002/1/util/inteltool/amb.c
[3] http://review.coreboot.org/525
Change-Id: I2ea1a31dc1e3db129e767d6a9e0433fd75a77d0f
Signed-off-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-on: http://review.coreboot.org/3002
Tested-by: build bot (Jenkins)
Reviewed-by: Nico Huber <nico.huber@secunet.com>
Paul Menzel