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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-06-12 03:50:40 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-06-12 03:50:40 +0000
commitfc53809803cd2bc2434e312b19a18fa36776da12 (patch)
treeb4b43bd6538f51965ce32856e9c053d0f90919c8 /src/fundamental/macro-fundamental.h
parentAdding upstream version 255.5. (diff)
downloadsystemd-fc53809803cd2bc2434e312b19a18fa36776da12.tar.xz
systemd-fc53809803cd2bc2434e312b19a18fa36776da12.zip
Adding upstream version 256.upstream/256
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/fundamental/macro-fundamental.h')
-rw-r--r--src/fundamental/macro-fundamental.h30
1 files changed, 29 insertions, 1 deletions
diff --git a/src/fundamental/macro-fundamental.h b/src/fundamental/macro-fundamental.h
index 797330d..5ccbda5 100644
--- a/src/fundamental/macro-fundamental.h
+++ b/src/fundamental/macro-fundamental.h
@@ -158,6 +158,10 @@
__atomic_exchange_n(&(o), true, __ATOMIC_SEQ_CST); \
})
+#define U64_KB UINT64_C(1024)
+#define U64_MB (UINT64_C(1024) * U64_KB)
+#define U64_GB (UINT64_C(1024) * U64_MB)
+
#undef MAX
#define MAX(a, b) __MAX(UNIQ, (a), UNIQ, (b))
#define __MAX(aq, a, bq, b) \
@@ -245,6 +249,30 @@
CONST_ISPOWEROF2(_x); \
}))
+#define ADD_SAFE(ret, a, b) (!__builtin_add_overflow(a, b, ret))
+#define INC_SAFE(a, b) __INC_SAFE(UNIQ, a, b)
+#define __INC_SAFE(q, a, b) \
+ ({ \
+ const typeof(a) UNIQ_T(A, q) = (a); \
+ ADD_SAFE(UNIQ_T(A, q), *UNIQ_T(A, q), b); \
+ })
+
+#define SUB_SAFE(ret, a, b) (!__builtin_sub_overflow(a, b, ret))
+#define DEC_SAFE(a, b) __DEC_SAFE(UNIQ, a, b)
+#define __DEC_SAFE(q, a, b) \
+ ({ \
+ const typeof(a) UNIQ_T(A, q) = (a); \
+ SUB_SAFE(UNIQ_T(A, q), *UNIQ_T(A, q), b); \
+ })
+
+#define MUL_SAFE(ret, a, b) (!__builtin_mul_overflow(a, b, ret))
+#define MUL_ASSIGN_SAFE(a, b) __MUL_ASSIGN_SAFE(UNIQ, a, b)
+#define __MUL_ASSIGN_SAFE(q, a, b) \
+ ({ \
+ const typeof(a) UNIQ_T(A, q) = (a); \
+ MUL_SAFE(UNIQ_T(A, q), *UNIQ_T(A, q), b); \
+ })
+
#define LESS_BY(a, b) __LESS_BY(UNIQ, (a), UNIQ, (b))
#define __LESS_BY(aq, a, bq, b) \
({ \
@@ -294,7 +322,7 @@
const typeof(y) UNIQ_T(A, q) = (y); \
const typeof(x) UNIQ_T(B, q) = DIV_ROUND_UP((x), UNIQ_T(A, q)); \
typeof(x) UNIQ_T(C, q); \
- __builtin_mul_overflow(UNIQ_T(B, q), UNIQ_T(A, q), &UNIQ_T(C, q)) ? (typeof(x)) -1 : UNIQ_T(C, q); \
+ MUL_SAFE(&UNIQ_T(C, q), UNIQ_T(B, q), UNIQ_T(A, q)) ? UNIQ_T(C, q) : (typeof(x)) -1; \
})
#define ROUND_UP(x, y) __ROUND_UP(UNIQ, (x), (y))