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jberryman
GHC
Commits
1b61c2db
Commit
1b61c2db
authored
Jun 13, 2009
by
Duncan Coutts
Browse files
Remove the implementation of gmp primops from the rts
parent
0f10e070
Changes
5
Hide whitespace changes
Inline
Side-by-side
includes/Rts.h
View file @
1b61c2db
...
...
@@ -205,7 +205,6 @@ DLL_IMPORT_RTS extern char *prog_name;
extern
void
stackOverflow
(
void
);
extern
void
__decodeDouble
(
MP_INT
*
man
,
I_
*
_exp
,
StgDouble
dbl
);
extern
void
__decodeDouble_2Int
(
I_
*
man_sign
,
W_
*
man_high
,
W_
*
man_low
,
I_
*
exp
,
StgDouble
dbl
);
extern
void
__decodeFloat_Int
(
I_
*
man
,
I_
*
exp
,
StgFloat
flt
);
...
...
includes/mkDerivedConstants.c
View file @
1b61c2db
...
...
@@ -422,11 +422,5 @@ main(int argc, char *argv[])
struct_field
(
StgAsyncIOResult
,
errCode
);
#endif
struct_size
(
MP_INT
);
struct_field
(
MP_INT
,
_mp_alloc
);
struct_field
(
MP_INT
,
_mp_size
);
struct_field
(
MP_INT
,
_mp_d
);
ctype
(
mp_limb_t
);
return
0
;
}
rts/Linker.c
View file @
1b61c2db
...
...
@@ -537,23 +537,6 @@ typedef struct _RtsSymbolVal {
SymI_HasProto(stg_ap_pppppp_ret)
#endif
/* On Windows, we link libgmp.a statically into libHSrts.dll */
#ifdef mingw32_HOST_OS
#define GMP_SYMS \
SymI_HasProto(__gmpz_cmp) \
SymI_HasProto(__gmpz_cmp_si) \
SymI_HasProto(__gmpz_cmp_ui) \
SymI_HasProto(__gmpz_get_si) \
SymI_HasProto(__gmpz_get_ui)
#else
#define GMP_SYMS \
SymE_HasProto(__gmpz_cmp) \
SymE_HasProto(__gmpz_cmp_si) \
SymE_HasProto(__gmpz_cmp_ui) \
SymE_HasProto(__gmpz_get_si) \
SymE_HasProto(__gmpz_get_ui)
#endif
#define RTS_SYMBOLS \
Maybe_Stable_Names \
SymI_HasProto(StgReturn) \
...
...
@@ -591,13 +574,11 @@ typedef struct _RtsSymbolVal {
SymI_HasProto(OutOfHeapHook) \
SymI_HasProto(StackOverflowHook) \
SymI_HasProto(addDLL) \
GMP_SYMS \
SymI_HasProto(__int_encodeDouble) \
SymI_HasProto(__word_encodeDouble) \
SymI_HasProto(__2Int_encodeDouble) \
SymI_HasProto(__int_encodeFloat) \
SymI_HasProto(__word_encodeFloat) \
SymI_HasProto(andIntegerzh_fast) \
SymI_HasProto(atomicallyzh_fast) \
SymI_HasProto(barf) \
SymI_HasProto(debugBelch) \
...
...
@@ -611,11 +592,7 @@ typedef struct _RtsSymbolVal {
SymI_HasProto(checkzh_fast) \
SymI_HasProto(closure_flags) \
SymI_HasProto(cmp_thread) \
SymI_HasProto(cmpIntegerzh_fast) \
SymI_HasProto(cmpIntegerIntzh_fast) \
SymI_HasProto(complementIntegerzh_fast) \
SymI_HasProto(createAdjustor) \
SymI_HasProto(decodeDoublezh_fast) \
SymI_HasProto(decodeDoublezu2Intzh_fast) \
SymI_HasProto(decodeFloatzuIntzh_fast) \
SymI_HasProto(defaultsHook) \
...
...
@@ -623,8 +600,6 @@ typedef struct _RtsSymbolVal {
SymI_HasProto(deRefWeakzh_fast) \
SymI_HasProto(deRefStablePtrzh_fast) \
SymI_HasProto(dirty_MUT_VAR) \
SymI_HasProto(divExactIntegerzh_fast) \
SymI_HasProto(divModIntegerzh_fast) \
SymI_HasProto(forkzh_fast) \
SymI_HasProto(forkOnzh_fast) \
SymI_HasProto(forkProcess) \
...
...
@@ -633,9 +608,6 @@ typedef struct _RtsSymbolVal {
SymI_HasProto(freeStablePtr) \
SymI_HasProto(getOrSetTypeableStore) \
SymI_HasProto(getOrSetSignalHandlerStore) \
SymI_HasProto(gcdIntegerzh_fast) \
SymI_HasProto(gcdIntegerIntzh_fast) \
SymI_HasProto(gcdIntzh_fast) \
SymI_HasProto(genSymZh) \
SymI_HasProto(genericRaise) \
SymI_HasProto(getProgArgv) \
...
...
@@ -654,9 +626,6 @@ typedef struct _RtsSymbolVal {
SymI_HasProto(unpackClosurezh_fast) \
SymI_HasProto(getApStackValzh_fast) \
SymI_HasProto(getSparkzh_fast) \
SymI_HasProto(int2Integerzh_fast) \
SymI_HasProto(integer2Intzh_fast) \
SymI_HasProto(integer2Wordzh_fast) \
SymI_HasProto(isCurrentThreadBoundzh_fast) \
SymI_HasProto(isDoubleDenormalized) \
SymI_HasProto(isDoubleInfinite) \
...
...
@@ -673,7 +642,6 @@ typedef struct _RtsSymbolVal {
SymI_HasProto(insertSymbol) \
SymI_HasProto(lookupSymbol) \
SymI_HasProto(makeStablePtrzh_fast) \
SymI_HasProto(minusIntegerzh_fast) \
SymI_HasProto(mkApUpd0zh_fast) \
SymI_HasProto(myThreadIdzh_fast) \
SymI_HasProto(labelThreadzh_fast) \
...
...
@@ -689,20 +657,15 @@ typedef struct _RtsSymbolVal {
SymI_HasProto(newPinnedByteArrayzh_fast) \
SymI_HasProto(newAlignedPinnedByteArrayzh_fast) \
SymI_HasProto(newSpark) \
SymI_HasProto(orIntegerzh_fast) \
SymI_HasProto(performGC) \
SymI_HasProto(performMajorGC) \
SymI_HasProto(plusIntegerzh_fast) \
SymI_HasProto(prog_argc) \
SymI_HasProto(prog_argv) \
SymI_HasProto(putMVarzh_fast) \
SymI_HasProto(quotIntegerzh_fast) \
SymI_HasProto(quotRemIntegerzh_fast) \
SymI_HasProto(raisezh_fast) \
SymI_HasProto(raiseIOzh_fast) \
SymI_HasProto(readTVarzh_fast) \
SymI_HasProto(readTVarIOzh_fast) \
SymI_HasProto(remIntegerzh_fast) \
SymI_HasProto(resetNonBlockingFd) \
SymI_HasProto(resumeThread) \
SymI_HasProto(resolveObjs) \
...
...
@@ -833,7 +796,6 @@ typedef struct _RtsSymbolVal {
SymI_HasProto(suspendThread) \
SymI_HasProto(takeMVarzh_fast) \
SymI_HasProto(threadStatuszh_fast) \
SymI_HasProto(timesIntegerzh_fast) \
SymI_HasProto(tryPutMVarzh_fast) \
SymI_HasProto(tryTakeMVarzh_fast) \
SymI_HasProto(unblockAsyncExceptionszh_fast) \
...
...
@@ -841,9 +803,7 @@ typedef struct _RtsSymbolVal {
SymI_HasProto(unsafeThawArrayzh_fast) \
SymI_HasProto(waitReadzh_fast) \
SymI_HasProto(waitWritezh_fast) \
SymI_HasProto(word2Integerzh_fast) \
SymI_HasProto(writeTVarzh_fast) \
SymI_HasProto(xorIntegerzh_fast) \
SymI_HasProto(yieldzh_fast) \
SymI_NeedsProto(stg_interp_constr_entry) \
SymI_HasProto(alloc_blocks) \
...
...
@@ -862,13 +822,6 @@ typedef struct _RtsSymbolVal {
SymI_HasProto(traceCcszh_fast) \
RTS_USER_SIGNALS_SYMBOLS
#ifdef SUPPORT_LONG_LONGS
#define RTS_LONG_LONG_SYMS \
SymI_HasProto(int64ToIntegerzh_fast) \
SymI_HasProto(word64ToIntegerzh_fast)
#else
#define RTS_LONG_LONG_SYMS
/* nothing */
#endif
// 64-bit support functions in libgcc.a
#if defined(__GNUC__) && SIZEOF_VOID_P <= 4
...
...
@@ -916,7 +869,6 @@ typedef struct _RtsSymbolVal {
#define SymI_HasProto_redirect(vvv,xxx)
/**/
RTS_SYMBOLS
RTS_RET_SYMBOLS
RTS_LONG_LONG_SYMS
RTS_POSIX_ONLY_SYMBOLS
RTS_MINGW_ONLY_SYMBOLS
RTS_CYGWIN_ONLY_SYMBOLS
...
...
@@ -952,7 +904,6 @@ RTS_LIBFFI_SYMBOLS
static
RtsSymbolVal
rtsSyms
[]
=
{
RTS_SYMBOLS
RTS_RET_SYMBOLS
RTS_LONG_LONG_SYMS
RTS_POSIX_ONLY_SYMBOLS
RTS_MINGW_ONLY_SYMBOLS
RTS_CYGWIN_ONLY_SYMBOLS
...
...
rts/PrimOps.cmm
View file @
1b61c2db
...
...
@@ -28,24 +28,6 @@
#include
"
Cmm.h
"
#if
def
__PIC__
#if
ndef
mingw32_HOST_OS
import
__gmpz_init
;
import
__gmpz_add
;
import
__gmpz_sub
;
import
__gmpz_mul
;
import
__gmpz_gcd
;
import
__gmpn_gcd_1
;
import
__gmpn_cmp
;
import
__gmpz_tdiv_q
;
import
__gmpz_tdiv_r
;
import
__gmpz_tdiv_qr
;
import
__gmpz_fdiv_qr
;
import
__gmpz_divexact
;
import
__gmpz_and
;
import
__gmpz_xor
;
import
__gmpz_ior
;
import
__gmpz_com
;
#endif
import
pthread_mutex_lock
;
import
pthread_mutex_unlock
;
#endif
...
...
@@ -470,470 +452,9 @@ deRefWeakzh_fast
}
/* -----------------------------------------------------------------------------
Arbitrary-precision Integer operations.
There are some assumptions in this code that mp_limb_t == W_. This is
the case for all the platforms that GHC supports, currently.
Floating point operations.
-------------------------------------------------------------------------- */
int2Integerzh_fast
{
/* arguments: R1 = Int# */
W_
val
,
s
,
p
;
/* to avoid aliasing */
val
=
R1
;
ALLOC_PRIM
(
SIZEOF_StgArrWords
+
WDS
(
1
),
NO_PTRS
,
int2Integerzh_fast
);
p
=
Hp
-
SIZEOF_StgArrWords
;
SET_HDR
(
p
,
stg_ARR_WORDS_info
,
W_
[
CCCS
]);
StgArrWords_words
(
p
)
=
1
;
/* mpz_set_si is inlined here, makes things simpler */
if
(
%lt
(
val
,
0
))
{
s
=
-1
;
Hp
(
0
)
=
-
val
;
}
else
{
if
(
%gt
(
val
,
0
))
{
s
=
1
;
Hp
(
0
)
=
val
;
}
else
{
s
=
0
;
}
}
/* returns (# size :: Int#,
data :: ByteArray#
#)
*/
RET_NP
(
s
,
p
);
}
word2Integerzh_fast
{
/* arguments: R1 = Word# */
W_
val
,
s
,
p
;
/* to avoid aliasing */
val
=
R1
;
ALLOC_PRIM
(
SIZEOF_StgArrWords
+
WDS
(
1
),
NO_PTRS
,
word2Integerzh_fast
);
p
=
Hp
-
SIZEOF_StgArrWords
;
SET_HDR
(
p
,
stg_ARR_WORDS_info
,
W_
[
CCCS
]);
StgArrWords_words
(
p
)
=
1
;
if
(
val
!=
0
)
{
s
=
1
;
W_
[
Hp
]
=
val
;
}
else
{
s
=
0
;
}
/* returns (# size :: Int#,
data :: ByteArray# #)
*/
RET_NP
(
s
,
p
);
}
/*
* 'long long' primops for converting to/from Integers.
*/
#if
def
SUPPORT_LONG_LONGS
int64ToIntegerzh_fast
{
/* arguments: L1 = Int64# */
L_
val
;
W_
hi
,
lo
,
s
,
neg
,
words_needed
,
p
;
val
=
L1
;
neg
=
0
;
hi
=
TO_W_
(
val
>>
32
);
lo
=
TO_W_
(
val
);
if
(
hi
==
0
||
(
hi
==
0
xFFFFFFFF
&&
lo
!=
0
)
)
{
// minimum is one word
words_needed
=
1
;
}
else
{
words_needed
=
2
;
}
ALLOC_PRIM
(
SIZEOF_StgArrWords
+
WDS
(
words_needed
),
NO_PTRS
,
int64ToIntegerzh_fast
);
p
=
Hp
-
SIZEOF_StgArrWords
-
WDS
(
words_needed
)
+
WDS
(
1
);
SET_HDR
(
p
,
stg_ARR_WORDS_info
,
W_
[
CCCS
]);
StgArrWords_words
(
p
)
=
words_needed
;
if
(
%lt
(
hi
,
0
)
)
{
neg
=
1
;
lo
=
-
lo
;
if
(
lo
==
0
)
{
hi
=
-
hi
;
}
else
{
hi
=
-
hi
-
1
;
}
}
if
(
words_needed
==
2
)
{
s
=
2
;
Hp
(
-1
)
=
lo
;
Hp
(
0
)
=
hi
;
}
else
{
if
(
lo
!=
0
)
{
s
=
1
;
Hp
(
0
)
=
lo
;
}
else
/* val==0 */
{
s
=
0
;
}
}
if
(
neg
!=
0
)
{
s
=
-
s
;
}
/* returns (# size :: Int#,
data :: ByteArray# #)
*/
RET_NP
(
s
,
p
);
}
word64ToIntegerzh_fast
{
/* arguments: L1 = Word64# */
L_
val
;
W_
hi
,
lo
,
s
,
words_needed
,
p
;
val
=
L1
;
hi
=
TO_W_
(
val
>>
32
);
lo
=
TO_W_
(
val
);
if
(
hi
!=
0
)
{
words_needed
=
2
;
}
else
{
words_needed
=
1
;
}
ALLOC_PRIM
(
SIZEOF_StgArrWords
+
WDS
(
words_needed
),
NO_PTRS
,
word64ToIntegerzh_fast
);
p
=
Hp
-
SIZEOF_StgArrWords
-
WDS
(
words_needed
)
+
WDS
(
1
);
SET_HDR
(
p
,
stg_ARR_WORDS_info
,
W_
[
CCCS
]);
StgArrWords_words
(
p
)
=
words_needed
;
if
(
hi
!=
0
)
{
s
=
2
;
Hp
(
-1
)
=
lo
;
Hp
(
0
)
=
hi
;
}
else
{
if
(
lo
!=
0
)
{
s
=
1
;
Hp
(
0
)
=
lo
;
}
else
/* val==0 */
{
s
=
0
;
}
}
/* returns (# size :: Int#,
data :: ByteArray# #)
*/
RET_NP
(
s
,
p
);
}
#endif
/* SUPPORT_LONG_LONGS */
#define
GMP_TAKE2_RET1
(
name
,
mp_fun
)
\
name
\
{
\
CInt
s1
,
s2
;
\
W_
d1
,
d2
;
\
W_
mp_tmp1
;
\
W_
mp_tmp2
;
\
W_
mp_result1
;
\
W_
mp_result2
;
\
\
/* call doYouWantToGC() */
\
MAYBE_GC
(
R2_PTR
&
R4_PTR
,
name
);
\
\
STK_CHK_GEN
(
4
*
SIZEOF_MP_INT
,
R2_PTR
&
R4_PTR
,
name
);
\
\
s1
=
W_TO_INT
(
R1
);
\
d1
=
R2
;
\
s2
=
W_TO_INT
(
R3
);
\
d2
=
R4
;
\
\
mp_tmp1
=
Sp
-
1
*
SIZEOF_MP_INT
;
\
mp_tmp2
=
Sp
-
2
*
SIZEOF_MP_INT
;
\
mp_result1
=
Sp
-
3
*
SIZEOF_MP_INT
;
\
mp_result2
=
Sp
-
4
*
SIZEOF_MP_INT
;
\
MP_INT__mp_alloc
(
mp_tmp1
)
=
W_TO_INT
(
StgArrWords_words
(
d1
));
\
MP_INT__mp_size
(
mp_tmp1
)
=
(
s1
);
\
MP_INT__mp_d
(
mp_tmp1
)
=
BYTE_ARR_CTS
(
d1
);
\
MP_INT__mp_alloc
(
mp_tmp2
)
=
W_TO_INT
(
StgArrWords_words
(
d2
));
\
MP_INT__mp_size
(
mp_tmp2
)
=
(
s2
);
\
MP_INT__mp_d
(
mp_tmp2
)
=
BYTE_ARR_CTS
(
d2
);
\
\
foreign
"
C
"
__gmpz_init
(
mp_result1
"
ptr
"
)
[];
\
\
/* Perform the operation */
\
foreign
"
C
"
mp_fun
(
mp_result1
"
ptr
"
,
mp_tmp1
"
ptr
"
,
mp_tmp2
"
ptr
"
)
[];
\
\
RET_NP
(
TO_W_
(
MP_INT__mp_size
(
mp_result1
)),
\
MP_INT__mp_d
(
mp_result1
)
-
SIZEOF_StgArrWords
);
\
}
#define
GMP_TAKE1_RET1
(
name
,
mp_fun
)
\
name
\
{
\
CInt
s1
;
\
W_
d1
;
\
W_
mp_tmp1
;
\
W_
mp_result1
;
\
\
/* call doYouWantToGC() */
\
MAYBE_GC
(
R2_PTR
,
name
);
\
\
STK_CHK_GEN
(
2
*
SIZEOF_MP_INT
,
R2_PTR
,
name
);
\
\
d1
=
R2
;
\
s1
=
W_TO_INT
(
R1
);
\
\
mp_tmp1
=
Sp
-
1
*
SIZEOF_MP_INT
;
\
mp_result1
=
Sp
-
2
*
SIZEOF_MP_INT
;
\
MP_INT__mp_alloc
(
mp_tmp1
)
=
W_TO_INT
(
StgArrWords_words
(
d1
));
\
MP_INT__mp_size
(
mp_tmp1
)
=
(
s1
);
\
MP_INT__mp_d
(
mp_tmp1
)
=
BYTE_ARR_CTS
(
d1
);
\
\
foreign
"
C
"
__gmpz_init
(
mp_result1
"
ptr
"
)
[];
\
\
/* Perform the operation */
\
foreign
"
C
"
mp_fun
(
mp_result1
"
ptr
"
,
mp_tmp1
"
ptr
"
)
[];
\
\
RET_NP
(
TO_W_
(
MP_INT__mp_size
(
mp_result1
)),
\
MP_INT__mp_d
(
mp_result1
)
-
SIZEOF_StgArrWords
);
\
}
#define
GMP_TAKE2_RET2
(
name
,
mp_fun
)
\
name
\
{
\
CInt
s1
,
s2
;
\
W_
d1
,
d2
;
\
W_
mp_tmp1
;
\
W_
mp_tmp2
;
\
W_
mp_result1
;
\
W_
mp_result2
;
\
\
/* call doYouWantToGC() */
\
MAYBE_GC
(
R2_PTR
&
R4_PTR
,
name
);
\
\
STK_CHK_GEN
(
4
*
SIZEOF_MP_INT
,
R2_PTR
&
R4_PTR
,
name
);
\
\
s1
=
W_TO_INT
(
R1
);
\
d1
=
R2
;
\
s2
=
W_TO_INT
(
R3
);
\
d2
=
R4
;
\
\
mp_tmp1
=
Sp
-
1
*
SIZEOF_MP_INT
;
\
mp_tmp2
=
Sp
-
2
*
SIZEOF_MP_INT
;
\
mp_result1
=
Sp
-
3
*
SIZEOF_MP_INT
;
\
mp_result2
=
Sp
-
4
*
SIZEOF_MP_INT
;
\
MP_INT__mp_alloc
(
mp_tmp1
)
=
W_TO_INT
(
StgArrWords_words
(
d1
));
\
MP_INT__mp_size
(
mp_tmp1
)
=
(
s1
);
\
MP_INT__mp_d
(
mp_tmp1
)
=
BYTE_ARR_CTS
(
d1
);
\
MP_INT__mp_alloc
(
mp_tmp2
)
=
W_TO_INT
(
StgArrWords_words
(
d2
));
\
MP_INT__mp_size
(
mp_tmp2
)
=
(
s2
);
\
MP_INT__mp_d
(
mp_tmp2
)
=
BYTE_ARR_CTS
(
d2
);
\
\
foreign
"
C
"
__gmpz_init
(
mp_result1
"
ptr
"
)
[];
\
foreign
"
C
"
__gmpz_init
(
mp_result2
"
ptr
"
)
[];
\
\
/* Perform the operation */
\
foreign
"
C
"
mp_fun
(
mp_result1
"
ptr
"
,
mp_result2
"
ptr
"
,
mp_tmp1
"
ptr
"
,
mp_tmp2
"
ptr
"
)
[];
\
\
RET_NPNP
(
TO_W_
(
MP_INT__mp_size
(
mp_result1
)),
\
MP_INT__mp_d
(
mp_result1
)
-
SIZEOF_StgArrWords
,
\
TO_W_
(
MP_INT__mp_size
(
mp_result2
)),
\
MP_INT__mp_d
(
mp_result2
)
-
SIZEOF_StgArrWords
);
\
}
GMP_TAKE2_RET1
(
plusIntegerzh_fast
,
__gmpz_add
)
GMP_TAKE2_RET1
(
minusIntegerzh_fast
,
__gmpz_sub
)
GMP_TAKE2_RET1
(
timesIntegerzh_fast
,
__gmpz_mul
)
GMP_TAKE2_RET1
(
gcdIntegerzh_fast
,
__gmpz_gcd
)
GMP_TAKE2_RET1
(
quotIntegerzh_fast
,
__gmpz_tdiv_q
)
GMP_TAKE2_RET1
(
remIntegerzh_fast
,
__gmpz_tdiv_r
)
GMP_TAKE2_RET1
(
divExactIntegerzh_fast
,
__gmpz_divexact
)
GMP_TAKE2_RET1
(
andIntegerzh_fast
,
__gmpz_and
)
GMP_TAKE2_RET1
(
orIntegerzh_fast
,
__gmpz_ior
)
GMP_TAKE2_RET1
(
xorIntegerzh_fast
,
__gmpz_xor
)
GMP_TAKE1_RET1
(
complementIntegerzh_fast
,
__gmpz_com
)
GMP_TAKE2_RET2
(
quotRemIntegerzh_fast
,
__gmpz_tdiv_qr
)
GMP_TAKE2_RET2
(
divModIntegerzh_fast
,
__gmpz_fdiv_qr
)
gcdIntzh_fast
{
/* R1 = the first Int#; R2 = the second Int# */
W_
r
;
W_
mp_tmp_w
;
STK_CHK_GEN
(
1
*
SIZEOF_MP_INT
,
NO_PTRS
,
gcdIntzh_fast
);
mp_tmp_w
=
Sp
-
1
*
SIZEOF_MP_INT
;
W_
[
mp_tmp_w
]
=
R1
;
(
r
)
=
foreign
"
C
"
__gmpn_gcd_1
(
mp_tmp_w
"
ptr
"
,
1
,
R2
)
[];
R1
=
r
;
/* Result parked in R1, return via info-pointer at TOS */
jump
%ENTRY_CODE
(
Sp
(
0
));
}
gcdIntegerIntzh_fast
{
/* R1 = s1; R2 = d1; R3 = the int */
W_
s1
;
(
s1
)
=
foreign
"
C
"
__gmpn_gcd_1
(
BYTE_ARR_CTS
(
R2
)
"
ptr
"
,
R1
,
R3
)
[];
R1
=
s1
;
/* Result parked in R1, return via info-pointer at TOS */
jump
%ENTRY_CODE
(
Sp
(
0
));
}
cmpIntegerIntzh_fast
{
/* R1 = s1; R2 = d1; R3 = the int */
W_
usize
,
vsize
,
v_digit
,
u_digit
;
usize
=
R1
;
vsize
=
0
;
v_digit
=
R3
;
// paraphrased from __gmpz_cmp_si() in the GMP sources
if
(
%gt
(
v_digit
,
0
))
{
vsize
=
1
;
}
else
{
if
(
%lt
(
v_digit
,
0
))
{
vsize
=
-1
;
v_digit
=
-
v_digit
;
}
}
if
(
usize
!=
vsize
)
{
R1
=
usize
-
vsize
;
jump
%ENTRY_CODE
(
Sp
(
0
));
}
if
(
usize
==
0
)
{
R1
=
0
;
jump
%ENTRY_CODE
(
Sp
(
0
));
}
u_digit
=
W_
[
BYTE_ARR_CTS
(
R2
)];
if
(
u_digit
==
v_digit
)
{
R1
=
0
;
jump
%ENTRY_CODE
(
Sp
(
0
));
}
if
(
%gtu
(
u_digit
,
v_digit
))
{
// NB. unsigned: these are mp_limb_t's
R1
=
usize
;
}
else
{
R1
=
-
usize
;
}
jump
%ENTRY_CODE
(
Sp
(
0
));
}
cmpIntegerzh_fast
{
/* R1 = s1; R2 = d1; R3 = s2; R4 = d2 */
W_
usize
,
vsize
,
size
,
up
,
vp
;
CInt
cmp
;
// paraphrased from __gmpz_cmp() in the GMP sources
usize
=
R1
;
vsize
=
R3
;
if
(
usize
!=
vsize
)
{
R1
=
usize
-
vsize
;
jump
%ENTRY_CODE
(
Sp
(
0
));
}
if
(
usize
==
0
)
{
R1
=
0
;
jump
%ENTRY_CODE
(
Sp
(
0
));
}
if
(
%lt
(
usize
,
0
))
{
// NB. not <, which is unsigned
size
=
-
usize
;
}
else
{
size
=
usize
;
}
up
=
BYTE_ARR_CTS
(
R2
);
vp
=
BYTE_ARR_CTS
(
R4
);
(
cmp
)
=
foreign
"
C
"
__gmpn_cmp
(
up
"
ptr
"
,
vp
"
ptr
"
,
size
)
[];
if
(
cmp
==
0
::
CInt
)
{
R1
=
0
;
jump
%ENTRY_CODE
(
Sp
(
0
));
}
if
(
%lt
(
cmp
,
0
::
CInt
)
==
%lt
(
usize
,
0
))
{
R1
=
1
;
}
else
{
R1
=
(
-1
);
}
/* Result parked in R1, return via info-pointer at TOS */
jump
%ENTRY_CODE
(
Sp
(
0
));
}
integer2Intzh_fast
{
/* R1 = s; R2 = d */
W_
r
,
s
;