36d3793c94
In the pre-decompression code, use the appropriate largest possible rep movs and rep stos to move code and clear bss, respectively. For reverse copy, do note that the initial values are supposed to be the address of the first (highest) copy datum, not one byte beyond the end of the buffer. rep strings are not necessarily the fastest way to perform these operations on all current processors, but are likely to be in the future, and perhaps more importantly, we want to encourage the architecturally right thing to do here. This also fixes a couple of trivial inefficiencies on 64 bits. [ Impact: trivial performance enhancement, increase code similarity ] Signed-off-by: H. Peter Anvin <hpa@zytor.com> |
||
|---|---|---|
| .. | ||
| .gitignore | ||
| Makefile | ||
| head_32.S | ||
| head_64.S | ||
| misc.c | ||
| relocs.c | ||
| vmlinux.lds.S | ||
| vmlinux.scr | ||