Paul Mackerras fdd98d88d4 FPU: Fix zero result detection in fmadd-family instructions ...

With the multiply-add instructions, it is possible to get into state
FMADD_6 with R containing a value >= 8.0.  If the value is exactly
8.0, the logic will incorrectly conclude that the result is zero
because it only tests bits up to UNIT_BIT + 2.  Fix this by testing
up to UNIT_BIT + 3, and add a test case to the FPU test that triggers
this situation.

Signed-off-by: Paul Mackerras <paulus@ozlabs.org>

2026-01-14 09:06:50 +11:00

..

fpu.c

FPU: Fix zero result detection in fmadd-family instructions

2026-01-14 09:06:50 +11:00

head.S

tests/fpu: Add tests for basic FPSCR function and interrupt generation

2020-09-03 17:44:20 +10:00

Makefile

tests: Add a test for FP loads and stores

2020-09-03 15:15:45 +10:00

powerpc.lds

tests: Add a test for FP loads and stores

2020-09-03 15:15:45 +10:00