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[ARM] 3473/1: Use numbers 0-15 for the VFP double registers

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Patch from Catalin Marinas

This patch changes the double registers numbering to 0-15 from even 0-30,
in preparation for future VFP extensions. It also fixes the VFP_REG_ZERO
bug (value 16 actually represents the 8th double register with the original
numbering).

The original mcrr/mrrc on CP10 were generating FMRRS/FMSRR instead of
FMRRD/FMDRR. The patch changes to CP11 for the correct instructions.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Catalin Marinas 2006-04-10 21:32:46 +01:00 committed by Russell King
parent bb54a335ae
commit 1356c1948d
3 changed files with 11 additions and 17 deletions
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20
arch/arm/vfp/vfpdouble.c
View File

@ -1127,9 +1127,9 @@ u32 vfp_double_cpdo(u32 inst, u32 fpscr)
{
u32 op = inst & FOP_MASK;
u32 exceptions = 0;
unsigned int dd = vfp_get_sd(inst);
unsigned int dn = vfp_get_sn(inst);
unsigned int dm = vfp_get_sm(inst);
unsigned int dd = vfp_get_dd(inst);
unsigned int dn = vfp_get_dn(inst);
unsigned int dm = vfp_get_dm(inst);
unsigned int vecitr, veclen, vecstride;
u32 (*fop)(int, int, s32, u32);
@ -1146,7 +1146,7 @@ u32 vfp_double_cpdo(u32 inst, u32 fpscr)
pr_debug("VFP: vecstride=%u veclen=%u\n", vecstride,
(veclen >> FPSCR_LENGTH_BIT) + 1);
fop = (op == FOP_EXT) ? fop_extfns[dn] : fop_fns[FOP_TO_IDX(op)];
fop = (op == FOP_EXT) ? fop_extfns[FEXT_TO_IDX(inst)] : fop_fns[FOP_TO_IDX(op)];
if (!fop)
goto invalid;
@ -1154,17 +1154,13 @@ u32 vfp_double_cpdo(u32 inst, u32 fpscr)
u32 except;
if (op == FOP_EXT)
pr_debug("VFP: itr%d (d%u.%u) = op[%u] (d%u.%u)\n",
pr_debug("VFP: itr%d (d%u) = op[%u] (d%u)\n",
vecitr >> FPSCR_LENGTH_BIT,
dd >> 1, dd & 1, dn,
dm >> 1, dm & 1);
dd, dn, dm);
else
pr_debug("VFP: itr%d (d%u.%u) = (d%u.%u) op[%u] (d%u.%u)\n",
pr_debug("VFP: itr%d (d%u) = (d%u) op[%u] (d%u)\n",
vecitr >> FPSCR_LENGTH_BIT,
dd >> 1, dd & 1,
dn >> 1, dn & 1,
FOP_TO_IDX(op),
dm >> 1, dm & 1);
dd, dn, FOP_TO_IDX(op), dm);
except = fop(dd, dn, dm, fpscr);
pr_debug("VFP: itr%d: exceptions=%08x\n",

6
arch/arm/vfp/vfphw.S
View File

@ -189,11 +189,10 @@ vfp_put_float:
.globl vfp_get_double
vfp_get_double:
mov r0, r0, lsr #1
add pc, pc, r0, lsl #3
mov r0, r0
.irp dr,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15
mrrc p10, 1, r0, r1, c\dr @ fmrrd r0, r1, d\dr
mrrc p11, 1, r0, r1, c\dr @ fmrrd r0, r1, d\dr
mov pc, lr
.endr
@ -204,10 +203,9 @@ vfp_get_double:
.globl vfp_put_double
vfp_put_double:
mov r0, r0, lsr #1
add pc, pc, r0, lsl #3
mov r0, r0
.irp dr,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15
mcrr p10, 1, r1, r2, c\dr @ fmrrd r1, r2, d\dr
mcrr p11, 1, r1, r2, c\dr @ fmdrr r1, r2, d\dr
mov pc, lr
.endr

2
arch/arm/vfp/vfpsingle.c
View File

@ -1193,7 +1193,7 @@ u32 vfp_single_cpdo(u32 inst, u32 fpscr)
pr_debug("VFP: vecstride=%u veclen=%u\n", vecstride,
(veclen >> FPSCR_LENGTH_BIT) + 1);
fop = (op == FOP_EXT) ? fop_extfns[sn] : fop_fns[FOP_TO_IDX(op)];
fop = (op == FOP_EXT) ? fop_extfns[FEXT_TO_IDX(inst)] : fop_fns[FOP_TO_IDX(op)];
if (!fop)
goto invalid;