diff options
| author | Paul Menzel <paulepanter@users.sourceforge.net> | 2013-04-01 18:26:58 +0200 |
|---|---|---|
| committer | Nico Huber <nico.huber@secunet.com> | 2013-04-04 14:24:25 +0200 |
| commit | 3402a7fa7001e40035b6ae303b2e47b6281fef1c (patch) | |
| tree | c9ac94451825d83db045c115b85ef1d31e28d631 /util/inteltool/amb.c | |
| parent | 190011e47c6187479db69344ccf87762009af444 (diff) | |
inteltool: Cast to `intptr_t` instead of `uint64_t`
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>
Diffstat (limited to 'util/inteltool/amb.c')
| -rw-r--r-- | util/inteltool/amb.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/util/inteltool/amb.c b/util/inteltool/amb.c index a3ee01da43..a1761ee501 100644 --- a/util/inteltool/amb.c +++ b/util/inteltool/amb.c @@ -17,7 +17,7 @@ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ - +#include <stddef.h> #include <stdio.h> #include <stdlib.h> #include "inteltool.h" @@ -28,7 +28,7 @@ static uint32_t amb_read_config32(volatile void *base, int fn, int reg) { - return *(uint32_t *)(AMB_ADDR((uint64_t)base, fn, reg)); + return *(uint32_t *)(AMB_ADDR((intptr_t)base, fn, reg)); } static void amb_printreg32(volatile void *base, int fn, int reg, @@ -42,7 +42,7 @@ static void amb_printreg32(volatile void *base, int fn, int reg, static uint16_t amb_read_config16(volatile void *base, int fn, int reg) { - return *(uint16_t *)(AMB_ADDR((uint64_t)base, fn, reg)); + return *(uint16_t *)(AMB_ADDR((intptr_t)base, fn, reg)); } static void amb_printreg16(volatile void *base, int fn, int reg, @@ -57,7 +57,7 @@ static void amb_printreg16(volatile void *base, int fn, int reg, static uint8_t amb_read_config8(volatile void *base, int fn, int reg) { - return *(uint8_t *)(AMB_ADDR((uint64_t)base, fn, reg)); + return *(uint8_t *)(AMB_ADDR((intptr_t)base, fn, reg)); } static void amb_printreg8(volatile void *base, int fn, int reg, |