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| author | Jeenu Viswambharan <jeenu.viswambharan@arm.com> | 2017-12-07 08:43:05 +0000 |
|---|---|---|
| committer | Jeenu Viswambharan <jeenu.viswambharan@arm.com> | 2018-05-04 08:33:17 +0100 |
| commit | 30d81c36da441bcd0fbccbc3ac1a7268d2cc5ad2 (patch) | |
| tree | 4834b91958ace9dfd61d7776de15f6bd737ba6a3 /include/lib/utils_def.h | |
| parent | 14c6016ad5ff4ac22861dff03129a646ad02c6dd (diff) | |
| download | platform_external_arm-trusted-firmware-30d81c36da441bcd0fbccbc3ac1a7268d2cc5ad2.tar.gz platform_external_arm-trusted-firmware-30d81c36da441bcd0fbccbc3ac1a7268d2cc5ad2.tar.bz2 platform_external_arm-trusted-firmware-30d81c36da441bcd0fbccbc3ac1a7268d2cc5ad2.zip | |
RAS: Add helpers to access Standard Error Records
The ARMv8 RAS Extensions introduced Standard Error Records which are a
set of standard registers through which:
- Platform can configure RAS node policy; e.g., notification
mechanism;
- RAS nodes can record and expose error information for error handling
agents.
Standard Error Records can either be accessed via. memory-mapped
or System registers. This patch adds helper functions to access
registers and fields within an error record.
Change-Id: I6594ba799f4a1789d7b1e45b3e17fd40e7e0ba5c
Signed-off-by: Jeenu Viswambharan <jeenu.viswambharan@arm.com>
Diffstat (limited to 'include/lib/utils_def.h')
| -rw-r--r-- | include/lib/utils_def.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/lib/utils_def.h b/include/lib/utils_def.h index 8abc73c09..31b129454 100644 --- a/include/lib/utils_def.h +++ b/include/lib/utils_def.h @@ -68,6 +68,13 @@ (((ptr) > UINTPTR_MAX - (inc)) ? 1 : 0) /* + * Evaluates to 1 if (u32 + inc) overflows, 0 otherwise. + * Both arguments must be 32-bit unsigned integers (i.e. effectively uint32_t). + */ +#define check_u32_overflow(u32, inc) \ + ((u32) > (UINT32_MAX - (inc)) ? 1 : 0) + +/* * For those constants to be shared between C and other sources, apply a 'u' * or 'ull' suffix to the argument only in C, to avoid undefined or unintended * behaviour. |