diff options
Diffstat (limited to 'tools/lib32/README')
| -rw-r--r-- | tools/lib32/README | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/tools/lib32/README b/tools/lib32/README new file mode 100644 index 0000000..d430cc2 --- /dev/null +++ b/tools/lib32/README @@ -0,0 +1,15 @@ +# $FreeBSD$ + +This script is a stopgap for building tuned 32 bit (but i386 ABI compatable) +libraries for amd64 systems. We *know* we have things like CMOV, SSE2 etc +so take advantage of it. + +At some point libc would be configured to use the fast syscall/sysret +instructions (instead of int 0x80) since we have a known minimum feature +set and don't have to do runtime tests for it. + +libpthread could use the amd64 sysarch syscalls for setting %fs/%gs +since we don't have USER_LDT. This would be a heck of a lot easier than +trying to run a real i386-built libc/libpthread. + +Again, this hack is a stopgap until something is integrated into world. |
