| Do_func performs the unimplemented operation. The operation
| to be performed is determined from the lower 7 bits of the
| extension word (except in the case of fmovecr and fsincos).
-| The opcode and tag bits form an index into a jump table in
-| tbldo.sa. Cases of zero, infinity and NaN are handled in
+| The opcode and tag bits form an index into a jump table in
+| tbldo.sa. Cases of zero, infinity and NaN are handled in
| do_func by forcing the default result. Normalized and
| denormalized (there are no unnormalized numbers at this
-| point) are passed onto the emulation code.
+| point) are passed onto the emulation code.
|
| CMDREG1B and STAG are extracted from the fsave frame
| and combined to form the table index. The function called
| Copyright (C) Motorola, Inc. 1990
| All Rights Reserved
|
-| THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE OF MOTOROLA
-| The copyright notice above does not evidence any
+| THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE OF MOTOROLA
+| The copyright notice above does not evidence any
| actual or intended publication of such source code.
DO_FUNC: |idnt 2,1 | Motorola 040 Floating Point Software Package
|xref t_dz2
|xref t_operr
|xref t_inx2
- |xref t_resdnrm
+ |xref t_resdnrm
|xref dst_nan
|xref src_nan
|xref nrm_set
| directly.
|
bfextu CMDREG1B(%a6){#0:#6},%d0 |get opclass and src fields
- cmpil #0x17,%d0 |if op class and size fields are $17,
+ cmpil #0x17,%d0 |if op class and size fields are $17,
| ;it is FMOVECR; if not, continue
bnes not_fmovecr
jmp smovcr |fmovecr; jmp directly to emulation
not_fmovecr:
movew CMDREG1B(%a6),%d0
andl #0x7F,%d0
- cmpil #0x38,%d0 |if the extension is >= $38,
+ cmpil #0x38,%d0 |if the extension is >= $38,
bge serror |it is illegal
bfextu STAG(%a6){#0:#3},%d1
lsll #3,%d0 |make room for STAG
bsr ld_mzero |if neg, load neg zero, return here
bra t_inx2 |now, set the inx for the next inst
|
-| Load a signed zero to fp0; do not set inex2/ainex
+| Load a signed zero to fp0; do not set inex2/ainex
|
.global szero
szero:
bne ld_mzero |if neg, load neg zero
bra ld_pzero |load positive zero
|
-| Load a signed infinity to fp0; do not set inex2/ainex
+| Load a signed infinity to fp0; do not set inex2/ainex
|
.global sinf
sinf:
bne ld_minf |if negative branch
bra ld_pinf
|
-| Load a signed one to fp0; do not set inex2/ainex
+| Load a signed one to fp0; do not set inex2/ainex
|
.global sone
sone:
bne ld_mone
bra ld_pone
|
-| Load a signed pi/2 to fp0; do not set inex2/ainex
+| Load a signed pi/2 to fp0; do not set inex2/ainex
|
.global spi_2
spi_2:
bne t_operr
bra ld_pinf
|
-| FLOGNP1
+| FLOGNP1
|
.global sslognp1
sslognp1:
fmovemx (%a0),%fp0-%fp0
fcmpb #-1,%fp0
- fbgt slognp1
+ fbgt slognp1
fbeq t_dz2 |if = -1, divide by zero exception
fmovel #0,%FPSR |clr N flag
bra t_operr |take care of operands < -1
|
.global sslogn
sslogn:
- btstb #sign_bit,LOCAL_EX(%a0)
+ btstb #sign_bit,LOCAL_EX(%a0)
bne t_operr |take care of operands < 0
cmpiw #0x3fff,LOCAL_EX(%a0) |test for 1.0 input
bne slogn
.global sslognd
sslognd:
- btstb #sign_bit,LOCAL_EX(%a0)
+ btstb #sign_bit,LOCAL_EX(%a0)
beq slognd
bra t_operr |take care of operands < 0
.global sslog10d
sslog10d:
- btstb #sign_bit,LOCAL_EX(%a0)
+ btstb #sign_bit,LOCAL_EX(%a0)
beq slog10d
bra t_operr |take care of operands < 0
.global sslog2d
sslog2d:
- btstb #sign_bit,LOCAL_EX(%a0)
+ btstb #sign_bit,LOCAL_EX(%a0)
beq slog2d
bra t_operr |take care of operands < 0
btstl #7,%d0 |test if + or -
beq ld_pzero |if pos then load +0
bra ld_mzero |else neg load -0
-
+
smod_fpn:
moveb ETEMP(%a6),%d1 |get sign of src op
moveb FPTEMP(%a6),%d0 |get sign of dst op
fmovel USER_FPCR(%a6),%fpcr |use user's rmode and precision
fmovex FPTEMP(%a6),%fp0 |return dest to fp0
rts
-
+
|
| FREM
|
lea premt,%a1
movel (%a1,%d1.w*4),%a1
jmp (%a1)
-
+
srem_snan:
bra src_nan
srem_dnan:
btstl #7,%d0 |test if + or -
beq ld_pzero |if pos then load +0
bra ld_mzero |else neg load -0
-
+
srem_fpn:
moveb ETEMP(%a6),%d1 |get sign of src op
moveb FPTEMP(%a6),%d0 |get sign of dst op
.long scl_inf | 10,00 inf,norm = +-inf
.long scl_inf | 10,01 inf,zero = +-inf
.long scl_opr | 10,10 inf,inf = nan with operr
- .long scl_snan | 10,11 inf,nan = nan
- .long scl_dnan | 11,00 nan,norm = nan
- .long scl_dnan | 11,01 nan,zero = nan
- .long scl_dnan | 11,10 nan,inf = nan
+ .long scl_snan | 10,11 inf,nan = nan
+ .long scl_dnan | 11,00 nan,norm = nan
+ .long scl_dnan | 11,01 nan,zero = nan
+ .long scl_dnan | 11,10 nan,inf = nan
.long scl_dnan | 11,11 nan,nan = nan
.global pscale
sincosp:
fmovex PZERO,%fp0
sincoscom:
- fmovemx PONE,%fp1-%fp1 |do not allow FPSR to be affected
+ fmovemx PONE,%fp1-%fp1 |do not allow FPSR to be affected
bra sto_cos |store cosine result
.global ssincosi
bsr sto_cos
bra src_nan
|
-| This code forces default values for the zero, inf, and nan cases
+| This code forces default values for the zero, inf, and nan cases
| in the transcendentals code. The CC bits must be set in the
| stacked FPSR to be correctly reported.
|
git://git.onelab.eu / linux-2.6.git / blobdiff