diff options
Diffstat (limited to 'libgloss/mips/cfe_prestart.S')
| -rw-r--r-- | libgloss/mips/cfe_prestart.S | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/libgloss/mips/cfe_prestart.S b/libgloss/mips/cfe_prestart.S index 4a1db5392..8548c1e47 100644 --- a/libgloss/mips/cfe_prestart.S +++ b/libgloss/mips/cfe_prestart.S @@ -64,3 +64,23 @@ _prestart: jr v0 nop .end _prestart + + +/* Avoid worst-case execution hazards. This is targetted at the SB-1 + pipe, and is much worse than it needs to be (not even counting + the subroutine call and return). */ + .globl hardware_hazard_hook + .ent hardware_hazard_hook +hardware_hazard_hook: + .set push + .set mips32 + .set noreorder + ssnop + ssnop + ssnop + bnel $0, $0, .+4 + ssnop + j ra + nop + .set pop + .end hardware_hazard_hook |