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authorRussell King <rmk@dyn-67.arm.linux.org.uk>2008-01-10 17:07:08 +0000
committerRussell King <rmk+kernel@arm.linux.org.uk>2008-01-10 17:07:08 +0000
commit90e6b048365950416419c031f2f2d9a8afb5b70c (patch)
tree9be821f3d0abf5d9773bb1d4f57f013be445fdac /arch/arm/vfp/vfpdouble.c
parent198a6d5a6189501e2b8abf4e3149ccb337866f65 (diff)
[ARM] vfp: fix fuitod/fsitod instructions
These two instructions exceptionally take a single precision register as their operand. This means we can't use vfp_get_dm() to read the register number - we need to use vfp_get_sm() instead. Add a flag to indicate this exception to the general rule. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/vfp/vfpdouble.c')
-rw-r--r--arch/arm/vfp/vfpdouble.c14
1 files changed, 11 insertions, 3 deletions
diff --git a/arch/arm/vfp/vfpdouble.c b/arch/arm/vfp/vfpdouble.c
index 190a09ad18e..6cac43bd1d8 100644
--- a/arch/arm/vfp/vfpdouble.c
+++ b/arch/arm/vfp/vfpdouble.c
@@ -668,8 +668,8 @@ static struct op fops_ext[32] = {
[FEXT_TO_IDX(FEXT_FCMPZ)] = { vfp_double_fcmpz, OP_SCALAR },
[FEXT_TO_IDX(FEXT_FCMPEZ)] = { vfp_double_fcmpez, OP_SCALAR },
[FEXT_TO_IDX(FEXT_FCVT)] = { vfp_double_fcvts, OP_SCALAR|OP_SD },
- [FEXT_TO_IDX(FEXT_FUITO)] = { vfp_double_fuito, OP_SCALAR },
- [FEXT_TO_IDX(FEXT_FSITO)] = { vfp_double_fsito, OP_SCALAR },
+ [FEXT_TO_IDX(FEXT_FUITO)] = { vfp_double_fuito, OP_SCALAR|OP_SM },
+ [FEXT_TO_IDX(FEXT_FSITO)] = { vfp_double_fsito, OP_SCALAR|OP_SM },
[FEXT_TO_IDX(FEXT_FTOUI)] = { vfp_double_ftoui, OP_SCALAR|OP_SD },
[FEXT_TO_IDX(FEXT_FTOUIZ)] = { vfp_double_ftouiz, OP_SCALAR|OP_SD },
[FEXT_TO_IDX(FEXT_FTOSI)] = { vfp_double_ftosi, OP_SCALAR|OP_SD },
@@ -1128,7 +1128,7 @@ u32 vfp_double_cpdo(u32 inst, u32 fpscr)
u32 exceptions = 0;
unsigned int dest;
unsigned int dn = vfp_get_dn(inst);
- unsigned int dm = vfp_get_dm(inst);
+ unsigned int dm;
unsigned int vecitr, veclen, vecstride;
struct op *fop;
@@ -1146,6 +1146,14 @@ u32 vfp_double_cpdo(u32 inst, u32 fpscr)
dest = vfp_get_dd(inst);
/*
+ * f[us]ito takes a sN operand, not a dN operand.
+ */
+ if (fop->flags & OP_SM)
+ dm = vfp_get_sm(inst);
+ else
+ dm = vfp_get_dm(inst);
+
+ /*
* If destination bank is zero, vector length is always '1'.
* ARM DDI0100F C5.1.3, C5.3.2.
*/