From 7d73a35805a61a40f49d0840741434ab9548d638 Mon Sep 17 00:00:00 2001 From: Kevin O'Connor Date: Mon, 4 Mar 2019 23:24:43 -0500 Subject: command: Support evaluating C expressions in DECL_CONSTANT() Signed-off-by: Kevin O'Connor --- src/ctr.h | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'src/ctr.h') diff --git a/src/ctr.h b/src/ctr.h index 3396644c..959cef45 100644 --- a/src/ctr.h +++ b/src/ctr.h @@ -14,4 +14,17 @@ static char __PASTE(_DECLS_, __LINE__)[] __attribute__((used)) \ __section(".compile_time_request") = (REQUEST) +#define CTR_INT(V, S) ((((uint32_t)(V) >> S) & 0x3f) + 48) + +// Declare a compile time request with an integer expression +#define DECL_CTR_INT(REQUEST, VALUE) \ + static struct { char _r[sizeof(REQUEST)]; char _v[8]; } \ + __PASTE(_DECLI_, __LINE__) __attribute__((used)) \ + __section(".compile_time_request") = { \ + REQUEST " ", { \ + (VALUE) < 0 ? '-' : '+', \ + CTR_INT((VALUE),0), CTR_INT((VALUE),6), \ + CTR_INT((VALUE),12), CTR_INT((VALUE),18), \ + CTR_INT((VALUE),24), CTR_INT((VALUE),30), 0 } } + #endif // ctr.h -- cgit v1.2.3-70-g09d2