arch.7: correct claim about ILP32 alignment

Only i386 lays out structures with weak (4-byte) alightment.  It may be
that access works when weakly aligned, but from an ABI perspective, it's
all about struct layout.

Reviewed by:	kib, emaste
Sponsored by:	Innovate UK
Differential Revision:	https://reviews.freebsd.org/D52818

This commit is contained in:

Brooks Davis

2025-10-02 10:25:53 +01:00

parent 0a551f8a7d

commit f7b6ea699b

1 changed files with 3 additions and 3 deletions

share/man/man7/arch.7

+3 -3

View File

@@ -183,9 +183,9 @@ On all supported architectures:
 Integers are represented in two's complement.
 Alignment of integer and pointer types is natural, that is,
 the address of the variable must be congruent to zero modulo the type size.
 Most ILP32 ABIs, except
 .Dv arm ,
 require only 4-byte alignment for 64-bit integers.
 The sole exception is that
 .Dv i386
 requires only 4-byte alignment for 64-bit integers.
 .Pp
 Machine-dependent type sizes:
 .Bl -column -offset indent "Architecture" "void *" "long double" "time_t"