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gnulib2.c
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C/C++ Source or Header
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1993-09-22
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31KB
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1,669 lines
/* WARNING: compile this in 32 bit int mode even for short library */
#include <string.h>
#include <memory.h>
#ifndef _COMPILER_H
#include <compiler.h>
#endif
#ifdef __DEF_ALL__ /* this def'ed when making on the ST */
#define L_adddi3
#define L_subdi3
#define L_muldi3
#define L_divdi3
#define L_moddi3
#define L_udivdi3
#define L_umoddi3
#define L_negdi2
#define L_anddi3
#define L_iordi3
#define L_xordi3
#define L_lshrdi3
#define L_lshldi3
#define L_ashldi3
#define L_ashrdi3
#define L_one_cmpldi2
#define L_bdiv
#define L_cmpdi2
#define L_ucmpdi2
#define L_fixunsdfdi
#define L_fixdfdi
#define L_floatdidf
/* gcc-2.0 stuff */
#if 0 /* NOTE: these are now covered, and should not be generated here */
#define L_lshrsi3
#define L_lshlsi3
#define L_ashrsi3
#define L_ashlsi3
#define L_eqdf2
#define L_nedf2
#define L_gtdf2
#define L_gedf2
#define L_ltdf2
#define L_ledf2
#define L_fixsfsi
#define L_floatsisf
#define L_eqsf2
#define L_nesf2
#define L_gtsf2
#define L_gesf2
#define L_ltsf2
#define L_lesf2
#endif
#define L_fxussfsi
#define L_gccbcmp
#endif /* __DEF_ALL__ */
/* More subroutines needed by GCC output code on some machines. */
/* Compile this one with gcc. */
#if 0
#include "config.h" /* dont drag this in, just define relevant
stuff from xm/tm-atari.h & xm/tm-m68k.h here */
#else
/* #defines that need visibility everywhere. */
#define FALSE 0
#define TRUE 1
/* This describes the machine the compiler is hosted on. */
#define HOST_BITS_PER_CHAR 8
#define HOST_BITS_PER_SHORT 16
#define HOST_BITS_PER_INT 32
#define HOST_BITS_PER_LONG 32
/* Define this if most significant bit is lowest numbered
in instructions that operate on numbered bit-fields.
This is true for 68020 insns such as bfins and bfexts.
We make it true always by avoiding using the single-bit insns
except in special cases with constant bit numbers. */
#define BITS_BIG_ENDIAN
/* Define this if most significant byte of a word is the lowest numbered. */
/* That is true on the 68000. */
#define BYTES_BIG_ENDIAN
/* Define this if most significant word of a multiword number is numbered. */
/* For 68000 we can decide arbitrarily
since there are no machine instructions for them. */
#define WORDS_BIG_ENDIAN
/* number of bits in an addressible storage unit */
#define BITS_PER_UNIT 8
/* Width in bits of a "word", which is the contents of a machine register.
Note that this is not necessarily the width of data type `int';
if using 16-bit ints on a 68000, this would still be 32.
But on a machine with 16-bit registers, this would be 16. */
#define BITS_PER_WORD 32
/* Width of a word, in units (bytes). */
#define UNITS_PER_WORD 4
/* Width in bits of a pointer.
See also the macro `Pmode' defined below. */
#define POINTER_SIZE 32
/* Allocation boundary (in *bits*) for storing pointers in memory. */
#define POINTER_BOUNDARY 16
/* Allocation boundary (in *bits*) for storing arguments in argument list. */
#define PARM_BOUNDARY (TARGET_SHORT ? 16 : 32)
/* Boundary (in *bits*) on which stack pointer should be aligned. */
#define STACK_BOUNDARY 16
/* Allocation boundary (in *bits*) for the code of a function. */
#define FUNCTION_BOUNDARY 16
/* Alignment of field after `int : 0' in a structure. */
#define EMPTY_FIELD_BOUNDARY 16
/* No data type wants to be aligned rounder than this. */
#define BIGGEST_ALIGNMENT 16
/* Define this if move instructions will actually fail to work
when given unaligned data. */
#define STRICT_ALIGNMENT
/* Define number of bits in most basic integer type.
(If undefined, default is BITS_PER_WORD). */
#ifdef __MSHORT__
#define INT_TYPE_SIZE 16
#else
#define INT_TYPE_SIZE 32
#endif
#endif
#ifndef minix
#include <stddef.h>
#else
typedef unsigned long size_t;
#include "lib.h"
#endif
#ifndef SItype
#define SItype long int
#endif
/* long long ints are pairs of long ints in the order determined by
WORDS_BIG_ENDIAN. */
#ifdef WORDS_BIG_ENDIAN
struct longlong {long high, low;};
#else
struct longlong {long low, high;};
#endif
/* We need this union to unpack/pack longlongs, since we don't have
any arithmetic yet. Incoming long long parameters are stored
into the `ll' field, and the unpacked result is read from the struct
longlong. */
typedef union
{
struct longlong s;
long long ll;
SItype i[2];
unsigned SItype ui[2];
} long_long;
/* Internally, long long ints are strings of unsigned shorts in the
order determined by BYTES_BIG_ENDIAN. */
#define B 0x10000
#define low16 (B - 1)
#ifdef BYTES_BIG_ENDIAN
/* Note that HIGH and LOW do not describe the order
of words in a long long. They describe the order of words
in vectors ordered according to the byte order. */
#define HIGH 0
#define LOW 1
#define big_end(n) 0
#define little_end(n) ((n) - 1)
#define next_msd(i) ((i) - 1)
#define next_lsd(i) ((i) + 1)
#define is_not_msd(i,n) ((i) >= 0)
#define is_not_lsd(i,n) ((i) < (n))
#else
#define LOW 0
#define HIGH 1
#define big_end(n) ((n) - 1)
#define little_end(n) 0
#define next_msd(i) ((i) + 1)
#define next_lsd(i) ((i) - 1)
#define is_not_msd(i,n) ((i) < (n))
#define is_not_lsd(i,n) ((i) >= 0)
#endif
/* These algorithms are all straight out of Knuth, vol. 2, sec. 4.3.1. */
__EXTERN long long __adddi3 __PROTO((long long u, long long v));
__EXTERN long long __anddi3 __PROTO((long long u, long long v));
__EXTERN long long __iordi3 __PROTO((long long u, long long v));
__EXTERN long long __xordi3 __PROTO((long long u, long long v));
__EXTERN long long __one_cmpldi2 __PROTO((long long u));
__EXTERN long long __lshldi3 __PROTO((long long u, long int b1));
__EXTERN long long __lshrdi3 __PROTO((long long u, long int b1));
__EXTERN long long __ashldi3 __PROTO((long long u, long int b1));
__EXTERN long long __ashrdi3 __PROTO((long long u, long int b1));
__EXTERN long long __subdi3 __PROTO((long long u, long long v));
__EXTERN long long __muldi3 __PROTO((long long u, long long v));
__EXTERN long long __divdi3 __PROTO((long long u, long long v));
__EXTERN long long __moddi3 __PROTO((long long u, long long v));
__EXTERN long long __udivdi3 __PROTO((long long u, long long v));
__EXTERN long long __umoddi3 __PROTO((long long u, long long v));
__EXTERN long long __negdi2 __PROTO((long long u));
__EXTERN void __bdiv __PROTO((unsigned short *a, unsigned short *b, unsigned short *q, unsigned short *r, size_t m, size_t n));
__EXTERN SItype __cmpdi2 __PROTO((long long a, long long b));
__EXTERN SItype __ucmpdi2 __PROTO((long long a, long long b));
__EXTERN long long __fixunsdfdi __PROTO((double a));
__EXTERN long long __fixdfdi __PROTO((double a));
__EXTERN double __floatdidf __PROTO((long long u));
__EXTERN int __builtin_saveregs __PROTO((void));
__EXTERN unsigned SItype __fixunssfsi __PROTO((float a));
#ifdef L_adddi3
static int badd __PROTO((unsigned short *a, unsigned short *b, unsigned short *c, size_t n));
long long
__adddi3 (u, v)
long long u, v;
{
long a[2], b[2], c[2];
long_long w;
long_long uu, vv;
uu.ll = u;
vv.ll = v;
a[HIGH] = uu.s.high;
a[LOW] = uu.s.low;
b[HIGH] = vv.s.high;
b[LOW] = vv.s.low;
badd ((unsigned short *)a, (unsigned short *)b, (unsigned short *)c, sizeof c);
w.s.high = c[HIGH];
w.s.low = c[LOW];
return w.ll;
}
static int
badd (a, b, c, n)
unsigned short *a, *b, *c;
size_t n;
{
unsigned long acc;
int i;
n /= sizeof *c;
acc = 0;
for (i = little_end (n); is_not_msd (i, n); i = next_msd (i))
{
/* Widen before adding to avoid loss of high bits. */
acc += (unsigned long) a[i] + b[i];
c[i] = acc & low16;
acc = acc >> 16;
}
return acc;
}
#endif
#ifdef L_anddi3
long long
__anddi3 (u, v)
long long u, v;
{
long_long w;
long_long uu, vv;
uu.ll = u;
vv.ll = v;
w.s.high = uu.s.high & vv.s.high;
w.s.low = uu.s.low & vv.s.low;
return w.ll;
}
#endif
#ifdef L_iordi3
long long
__iordi3 (u, v)
long long u, v;
{
long_long w;
long_long uu, vv;
uu.ll = u;
vv.ll = v;
w.s.high = uu.s.high | vv.s.high;
w.s.low = uu.s.low | vv.s.low;
return w.ll;
}
#endif
#ifdef L_xordi3
long long
__xordi3 (u, v)
long long u, v;
{
long_long w;
long_long uu, vv;
uu.ll = u;
vv.ll = v;
w.s.high = uu.s.high ^ vv.s.high;
w.s.low = uu.s.low ^ vv.s.low;
return w.ll;
}
#endif
#ifdef L_one_cmpldi2
long long
__one_cmpldi2 (u)
long long u;
{
long_long w;
long_long uu;
uu.ll = u;
w.s.high = ~uu.s.high;
w.s.low = ~uu.s.low;
return w.ll;
}
#endif
#ifdef L_lshldi3
long long
__lshldi3 (u, b1)
long long u;
long int b1;
{
long_long w;
unsigned long carries;
int bm;
long_long uu;
int b = b1;
if (b == 0)
return u;
uu.ll = u;
bm = (sizeof (int) * BITS_PER_UNIT) - b;
if (bm <= 0)
{
w.s.low = 0;
w.s.high = (unsigned long)uu.s.low << -bm;
}
else
{
carries = (unsigned long)uu.s.low >> bm;
w.s.low = (unsigned long)uu.s.low << b;
w.s.high = ((unsigned long)uu.s.high << b) | carries;
}
return w.ll;
}
#endif
#ifdef L_lshrdi3
long long
__lshrdi3 (u, b1)
long long u;
long int b1;
{
long_long w;
unsigned long carries;
int bm;
long_long uu;
int b = b1;
if (b == 0)
return u;
uu.ll = u;
bm = (sizeof (int) * BITS_PER_UNIT) - b;
if (bm <= 0)
{
w.s.high = 0;
w.s.low = (unsigned long)uu.s.high >> -bm;
}
else
{
carries = (unsigned long)uu.s.high << bm;
w.s.high = (unsigned long)uu.s.high >> b;
w.s.low = ((unsigned long)uu.s.low >> b) | carries;
}
return w.ll;
}
#endif
#ifdef L_ashldi3
long long
__ashldi3 (u, b1)
long long u;
long int b1;
{
long_long w;
unsigned long carries;
int bm;
long_long uu;
int b = b1;
if (b == 0)
return u;
uu.ll = u;
bm = (sizeof (int) * BITS_PER_UNIT) - b;
if (bm <= 0)
{
w.s.low = 0;
w.s.high = (unsigned long)uu.s.low << -bm;
}
else
{
carries = (unsigned long)uu.s.low >> bm;
w.s.low = (unsigned long)uu.s.low << b;
w.s.high = ((unsigned long)uu.s.high << b) | carries;
}
return w.ll;
}
#endif
#ifdef L_ashrdi3
long long
__ashrdi3 (u, b1)
long long u;
long int b1;
{
long_long w;
unsigned long carries;
int bm;
long_long uu;
int b = b1;
if (b == 0)
return u;
uu.ll = u;
bm = (sizeof (int) * BITS_PER_UNIT) - b;
if (bm <= 0)
{
w.s.high = uu.s.high >> 31; /* just to make w.s.high 1..1 or 0..0 */
w.s.low = uu.s.high >> -bm;
}
else
{
carries = (unsigned long)uu.s.high << bm;
w.s.high = uu.s.high >> b;
w.s.low = ((unsigned long)uu.s.low >> b) | carries;
}
return w.ll;
}
#endif
#ifdef L_subdi3
static int bsub __PROTO((unsigned short *a, unsigned short *b, unsigned short *c, size_t n));
long long
__subdi3 (u, v)
long long u, v;
{
long a[2], b[2], c[2];
long_long w;
long_long uu, vv;
uu.ll = u;
vv.ll = v;
a[HIGH] = uu.s.high;
a[LOW] = uu.s.low;
b[HIGH] = vv.s.high;
b[LOW] = vv.s.low;
bsub ((unsigned short *)a, (unsigned short *)b, (unsigned short *)c, sizeof c);
w.s.high = c[HIGH];
w.s.low = c[LOW];
return w.ll;
}
static int
bsub (a, b, c, n)
unsigned short *a, *b, *c;
size_t n;
{
signed long acc;
int i;
n /= sizeof *c;
acc = 0;
for (i = little_end (n); is_not_msd (i, n); i = next_msd (i))
{
/* Widen before subtracting to avoid loss of high bits. */
acc += (long) a[i] - b[i];
c[i] = acc & low16;
acc = acc >> 16;
}
return acc;
}
#endif
#ifdef L_muldi3
static void bmul __PROTO((unsigned short *a, unsigned short *b, unsigned short *c, size_t m, size_t n));
long long
__muldi3 (u, v)
long long u, v;
{
long a[2], b[2], c[2][2];
long_long w;
long_long uu, vv;
uu.ll = u;
vv.ll = v;
a[HIGH] = uu.s.high;
a[LOW] = uu.s.low;
b[HIGH] = vv.s.high;
b[LOW] = vv.s.low;
bmul ((unsigned short *)a, (unsigned short *)b, (unsigned short *)c, sizeof a, sizeof b);
w.s.high = c[LOW][HIGH];
w.s.low = c[LOW][LOW];
return w.ll;
}
static void
bmul (a, b, c, m, n)
unsigned short *a, *b, *c;
size_t m, n;
{
int i, j;
unsigned long acc;
(void)bzero (c, m + n);
m /= sizeof *a;
n /= sizeof *b;
for (j = little_end (n); is_not_msd (j, n); j = next_msd (j))
{
unsigned short *c1 = c + j + little_end (2);
acc = 0;
for (i = little_end (m); is_not_msd (i, m); i = next_msd (i))
{
/* Widen before arithmetic to avoid loss of high bits. */
acc += (unsigned long) a[i] * b[j] + c1[i];
c1[i] = acc & low16;
acc = acc >> 16;
}
c1[i] = acc;
}
}
#endif
#ifdef L_divdi3
long long
__divdi3 (u, v)
long long u, v;
{
if (u < 0)
if (v < 0)
return (unsigned long long) -u / (unsigned long long) -v;
else
return - ((unsigned long long) -u / (unsigned long long) v);
else
if (v < 0)
return - ((unsigned long long) u / (unsigned long long) -v);
else
return (unsigned long long) u / (unsigned long long) v;
}
#endif
#ifdef L_moddi3
long long
__moddi3 (u, v)
long long u, v;
{
if (u < 0)
if (v < 0)
return - ((unsigned long long) -u % (unsigned long long) -v);
else
return - ((unsigned long long) -u % (unsigned long long) v);
else
if (v < 0)
return (unsigned long long) u % (unsigned long long) -v;
else
return (unsigned long long) u % (unsigned long long) v;
}
#endif
#ifdef L_udivdi3
long long
__udivdi3 (u, v)
long long u, v;
{
unsigned long a[2][2], b[2], q[2], r[2];
long_long w;
long_long uu, vv;
uu.ll = u;
vv.ll = v;
a[HIGH][HIGH] = 0;
a[HIGH][LOW] = 0;
a[LOW][HIGH] = uu.s.high;
a[LOW][LOW] = uu.s.low;
b[HIGH] = vv.s.high;
b[LOW] = vv.s.low;
__bdiv ((unsigned short *)a, (unsigned short *)b, (unsigned short *)q,
(unsigned short *)r, sizeof a, sizeof b);
w.s.high = q[HIGH];
w.s.low = q[LOW];
return w.ll;
}
#endif
#ifdef L_umoddi3
long long
__umoddi3 (u, v)
long long u, v;
{
unsigned long a[2][2], b[2], q[2], r[2];
long_long w;
long_long uu, vv;
uu.ll = u;
vv.ll = v;
a[HIGH][HIGH] = 0;
a[HIGH][LOW] = 0;
a[LOW][HIGH] = uu.s.high;
a[LOW][LOW] = uu.s.low;
b[HIGH] = vv.s.high;
b[LOW] = vv.s.low;
__bdiv ((unsigned short *)a, (unsigned short *)b, (unsigned short *)q,
(unsigned short *)r, sizeof a, sizeof b);
w.s.high = r[HIGH];
w.s.low = r[LOW];
return w.ll;
}
#endif
#ifdef L_negdi2
static int bneg __PROTO((unsigned short *a, unsigned short *b, size_t n));
long long
__negdi2 (u)
long long u;
{
unsigned long a[2], b[2];
long_long w;
long_long uu;
uu.ll = u;
a[HIGH] = uu.s.high;
a[LOW] = uu.s.low;
bneg ((unsigned short *)a, (unsigned short *)b, sizeof b);
w.s.high = b[HIGH];
w.s.low = b[LOW];
return w.ll;
}
static int
bneg (a, b, n)
unsigned short *a, *b;
size_t n;
{
signed long acc;
int i;
n /= sizeof (short);
acc = 0;
for (i = little_end (n); is_not_msd (i, n); i = next_msd (i))
{
acc -= a[i];
b[i] = acc & low16;
acc = acc >> 16;
}
return acc;
}
#endif
/* Divide a by b, producing quotient q and remainder r.
sizeof a is m
sizeof b is n
sizeof q is m - n
sizeof r is n
The quotient must fit in m - n bytes, i.e., the most significant
n digits of a must be less than b, and m must be greater than n. */
/* The name of this used to be __div_internal,
but that is too long for SYSV. */
#ifdef L_bdiv
static int bshift __PROTO((unsigned short *u, int k, unsigned short *w, unsigned int carry_in, int n));
void
__bdiv (a, b, q, r, m, n)
unsigned short *a, *b, *q, *r;
size_t m, n;
{
void abort(void);
unsigned long qhat, rhat;
unsigned long acc;
unsigned short *u = (unsigned short *) alloca (m);
unsigned short *v = (unsigned short *) alloca (n);
unsigned short *u0, *u1, *u2;
unsigned short *v0;
int d, qn;
int i, j;
m /= sizeof *a;
n /= sizeof *b;
qn = m - n;
/* Remove leading zero digits from divisor, and the same number of
digits (which must be zero) from dividend. */
while (b[big_end (n)] == 0)
{
r[big_end (n)] = 0;
a += little_end (2);
b += little_end (2);
r += little_end (2);
m--;
n--;
/* Check for zero divisor. */
if (n == 0)
abort ();
}
/* If divisor is a single digit, do short division. */
if (n == 1)
{
acc = a[big_end (m)];
a += little_end (2);
for (j = big_end (qn); is_not_lsd (j, qn); j = next_lsd (j))
{
acc = (acc << 16) | a[j];
q[j] = acc / *b;
acc = acc % *b;
}
*r = acc;
return;
}
/* No such luck, must do long division. Shift divisor and dividend
left until the high bit of the divisor is 1. */
for (d = 0; d < 16; d++)
if (b[big_end (n)] & (1 << (16 - 1 - d)))
break;
bshift (a, d, u, 0, m);
bshift (b, d, v, 0, n);
/* Get pointers to the high dividend and divisor digits. */
u0 = u + big_end (m) - big_end (qn);
u1 = next_lsd (u0);
u2 = next_lsd (u1);
u += little_end (2);
v0 = v + big_end (n);
/* Main loop: find a quotient digit, multiply it by the divisor,
and subtract that from the dividend, shifted over the right amount. */
for (j = big_end (qn); is_not_lsd (j, qn); j = next_lsd (j))
{
/* Quotient digit initial guess: high 2 dividend digits over high
divisor digit. */
if (u0[j] == *v0)
{
qhat = B - 1;
rhat = (unsigned long) *v0 + u1[j];
}
else
{
unsigned long numerator = ((unsigned long) u0[j] << 16) | u1[j];
qhat = numerator / *v0;
rhat = numerator % *v0;
}
/* Now get the quotient right for high 3 dividend digits over
high 2 divisor digits. */
while (rhat < B && qhat * *next_lsd (v0) > ((rhat << 16) | u2[j]))
{
qhat -= 1;
rhat += *v0;
}
/* Multiply quotient by divisor, subtract from dividend. */
acc = 0;
for (i = little_end (n); is_not_msd (i, n); i = next_msd (i))
{
acc += (unsigned long) (u + j)[i] - v[i] * qhat;
(u + j)[i] = acc & low16;
if (acc < B)
acc = 0;
else
acc = (acc >> 16) | -B;
}
q[j] = qhat;
/* Quotient may have been too high by 1. If dividend went negative,
decrement the quotient by 1 and add the divisor back. */
if ((signed long) (acc + u0[j]) < 0)
{
q[j] -= 1;
acc = 0;
for (i = little_end (n); is_not_msd (i, n); i = next_msd (i))
{
acc += (unsigned long) (u + j)[i] + v[i];
(u + j)[i] = acc & low16;
acc = acc >> 16;
}
}
}
/* Now the remainder is what's left of the dividend, shifted right
by the amount of the normalizing left shift at the top. */
r[big_end (n)] = bshift (u + 1 + little_end (j - 1),
16 - d,
r + little_end (2),
u[little_end (m - 1)] >> d,
n - 1);
}
/* Left shift U by K giving W; fill the introduced low-order bits with
CARRY_IN. Length of U and W is N. Return carry out. K must be
in 0 .. 16. */
static int
bshift (u, k, w, carry_in, n)
unsigned short *u, *w;
unsigned int carry_in;
int k, n;
{
unsigned long acc;
int i;
if (k == 0)
{
bcopy (u, w, n * sizeof *u);
return 0;
}
acc = carry_in;
for (i = little_end (n); is_not_msd (i, n); i = next_msd (i))
{
acc |= (unsigned long) u[i] << k;
w[i] = acc & low16;
acc = acc >> 16;
}
return acc;
}
#endif
#ifdef L_cmpdi2
SItype
__cmpdi2 (a, b)
long long a, b;
{
long_long au, bu;
au.ll = a, bu.ll = b;
if (au.s.high < bu.s.high)
return 0;
else if (au.s.high > bu.s.high)
return 2;
if ((unsigned) au.s.low < (unsigned) bu.s.low)
return 0;
else if ((unsigned) au.s.low > (unsigned) bu.s.low)
return 2;
return 1;
}
#endif
#ifdef L_ucmpdi2
SItype
__ucmpdi2 (a, b)
long long a, b;
{
long_long au, bu;
au.ll = a, bu.ll = b;
if ((unsigned) au.s.high < (unsigned) bu.s.high)
return 0;
else if ((unsigned) au.s.high > (unsigned) bu.s.high)
return 2;
if ((unsigned) au.s.low < (unsigned) bu.s.low)
return 0;
else if ((unsigned) au.s.low > (unsigned) bu.s.low)
return 2;
return 1;
}
#endif
#ifdef L_fixunsdfdi
#define HIGH_WORD_COEFF (((long long) 1) << BITS_PER_WORD)
long long
__fixunsdfdi (a)
double a;
{
double b;
unsigned long long v;
if (a < 0)
return 0;
/* Compute high word of result, as a flonum. */
b = (a / HIGH_WORD_COEFF);
/* Convert that to fixed (but not to long long!),
and shift it into the high word. */
v = (unsigned long int) b;
v <<= BITS_PER_WORD;
/* Remove high part from the double, leaving the low part as flonum. */
a -= (double)v;
/* Convert that to fixed (but not to long long!) and add it in.
Sometimes A comes out negative. This is significant, since
A has more bits than a long int does. */
if (a < 0)
v -= (unsigned long int) (- a);
else
v += (unsigned long int) a;
return v;
}
#endif
#ifdef L_fixdfdi
long long
__fixdfdi (a)
double a;
{
long long __fixunsdfdi (double a);
if (a < 0)
return - __fixunsdfdi (-a);
return __fixunsdfdi (a);
}
#endif
#ifdef L_floatdidf
#define HIGH_HALFWORD_COEFF (((long long) 1) << (BITS_PER_WORD / 2))
#define HIGH_WORD_COEFF (((long long) 1) << BITS_PER_WORD)
double
__floatdidf (u)
long long u;
{
double d;
int negate = 0;
if (u < 0) /* was : if (d < 0) */
u = -u, negate = 1;
d = (unsigned int) (u >> BITS_PER_WORD);
d *= HIGH_HALFWORD_COEFF;
d *= HIGH_HALFWORD_COEFF;
d += (unsigned int) (u & (HIGH_WORD_COEFF - 1));
return (negate ? -d : d);
}
#endif
#ifdef L_varargs
#ifdef sparc
asm (".global ___builtin_saveregs");
asm ("___builtin_saveregs:");
asm ("st %i0,[%fp+68]");
asm ("st %i1,[%fp+72]");
asm ("st %i2,[%fp+76]");
asm ("st %i3,[%fp+80]");
asm ("st %i4,[%fp+84]");
asm ("retl");
asm ("st %i5,[%fp+88]");
#else /* not sparc */
#if defined(MIPSEL) | defined(R3000) | defined(R2000) | defined(mips)
asm (" .ent __builtin_saveregs");
asm (" .globl __builtin_saveregs");
asm ("__builtin_saveregs:");
asm (" sw $4,0($30)");
asm (" sw $5,4($30)");
asm (" sw $6,8($30)");
asm (" sw $7,12($30)");
asm (" j $31");
asm (" .end __builtin_saveregs");
#else /* not mips */
__builtin_saveregs ()
{
abort ();
}
#endif /* not mips */
#endif /* not sparc */
#endif
/* stuff for gcc-2.0, note that you cannot compile the corresponding
C code from libgcc1.c for these functions with gcc-2.0!
This stuff should eventually be hand optimized as we have done
with the other stuff,
*/
#if 0 /* these were the decls used to compile the asm below */
#ifndef SItype
#define SItype long int
#endif
#ifndef FLOAT_VALUE_TYPE
#define FLOAT_VALUE_TYPE long int
#endif
#ifndef INTIFY
#define INTIFY(FLOATVAL) (intify.f = (FLOATVAL), intify.i)
#endif
#ifndef FLOATIFY
#define FLOATIFY(INTVAL) ((INTVAL).f)
#endif
#ifndef FLOAT_ARG_TYPE
#define FLOAT_ARG_TYPE union flt_or_int
#endif
union flt_or_value { FLOAT_VALUE_TYPE i; float f; };
union flt_or_int { long int i; float f; };
#endif
#if 0 /* NOTE: all these come from elsewhere now */
#ifdef L_lshrsi3
#if 0
SItype
__lshrsi3 (a, b)
unsigned SItype a, b;
{
return a >> b;
}
#endif
asm(" .text
.even
.globl ___lshrsi3
___lshrsi3:
movel sp@(4),d0
movel sp@(8),d1
lsrl d1,d0
rts
");
#endif
#ifdef L_lshlsi3
#if 0
SItype
__lshlsi3 (a, b)
unsigned SItype a, b;
{
return a << b;
}
#endif
asm(" .text
.even
.globl ___lshlsi3
___lshlsi3:
movel sp@(4),d0
movel sp@(8),d1
lsll d1,d0
rts
");
#endif
#ifdef L_ashrsi3
#if 0
SItype
__ashrsi3 (a, b)
SItype a, b;
{
return a >> b;
}
#endif
asm(" .text
.even
.globl ___ashrsi3
___ashrsi3:
movel sp@(4),d0
movel sp@(8),d1
asrl d1,d0
rts
");
#endif
#ifdef L_ashlsi3
#if 0
SItype
__ashlsi3 (a, b)
SItype a, b;
{
return a << b;
}
#endif
asm(" .text
.even
.globl ___ashlsi3
___ashlsi3:
movel sp@(4),d0
movel sp@(8),d1
asll d1,d0
rts
");
#endif
#ifdef L_eqdf2
#if 0
SItype
__eqdf2 (a, b)
double a, b;
{
/* Value == 0 iff a == b. */
return !(a == b);
}
#endif
asm(" .text
.even
.globl ___eqdf2
___eqdf2:
moveml #0x3000,sp@-
movel sp@(12),d1
movel sp@(16),d2
movel sp@(24),sp@-
movel sp@(24),sp@-
movel d2,sp@-
movel d1,sp@-
jbsr ___cmpdf2
addw #16,sp
tstl d0
sne d0
moveq #1,d3
andl d3,d0
moveml sp@+,#0xc
rts
");
#endif
#ifdef L_nedf2
#if 0
SItype
__nedf2 (a, b)
double a, b;
{
/* Value != 0 iff a != b. */
return a != b;
}
#endif
asm(" .text
.even
.globl ___nedf2
___nedf2:
moveml #0x3000,sp@-
movel sp@(12),d1
movel sp@(16),d2
movel sp@(24),sp@-
movel sp@(24),sp@-
movel d2,sp@-
movel d1,sp@-
jbsr ___cmpdf2
addw #16,sp
tstl d0
sne d0
moveq #1,d3
andl d3,d0
moveml sp@+,#0xc
rts
");
#endif
#ifdef L_gtdf2
#if 0
SItype
__gtdf2 (a, b)
double a, b;
{
/* Value > 0 iff a > b. */
return a > b;
}
#endif
asm(" .text
.even
.globl ___gtdf2
___gtdf2:
moveml #0x3000,sp@-
movel sp@(12),d1
movel sp@(16),d2
movel sp@(24),sp@-
movel sp@(24),sp@-
movel d2,sp@-
movel d1,sp@-
jbsr ___cmpdf2
addw #16,sp
tstl d0
sgt d0
moveq #1,d3
andl d3,d0
moveml sp@+,#0xc
rts
");
#endif
#ifdef L_gedf2
#if 0
SItype
__gedf2 (a, b)
double a, b;
{
/* Value >= 0 iff a >= b. */
return (a >= b) - 1;
}
#endif
asm(" .text
.even
.globl ___gedf2
___gedf2:
moveml #0x3000,sp@-
movel sp@(12),d1
movel sp@(16),d2
movel sp@(24),sp@-
movel sp@(24),sp@-
movel d2,sp@-
movel d1,sp@-
jbsr ___cmpdf2
addw #16,sp
tstl d0
sge d0
moveq #1,d3
andl d3,d0
subql #1,d0
moveml sp@+,#0xc
rts
");
#endif
#ifdef L_ltdf2
#if 0
SItype
__ltdf2 (a, b)
double a, b;
{
/* Value < 0 iff a < b. */
return -(a < b);
}
#endif
asm(" .text
.even
.globl ___ltdf2
___ltdf2:
moveml #0x3000,sp@-
movel sp@(12),d1
movel sp@(16),d2
movel sp@(24),sp@-
movel sp@(24),sp@-
movel d2,sp@-
movel d1,sp@-
jbsr ___cmpdf2
addw #16,sp
tstl d0
slt d0
moveq #1,d3
andl d3,d0
negl d0
moveml sp@+,#0xc
rts
");
#endif
#ifdef L_ledf2
#if 0
SItype
__ledf2 (a, b)
double a, b;
{
/* Value <= 0 iff a <= b. */
return 1 - (a <= b);
}
#endif
asm(" .text
.even
.globl ___ledf2
___ledf2:
movel d2,sp@-
movel sp@(8),d0
movel sp@(12),d1
moveq #1,d2
movel sp@(20),sp@-
movel sp@(20),sp@-
movel d1,sp@-
movel d0,sp@-
jbsr ___cmpdf2
addw #16,sp
tstl d0
jgt L11
moveq #0,d2
L11:
movel d2,d0
movel sp@+,d2
rts
");
#endif
#ifdef L_fixsfsi
#if 0
SItype
__fixsfsi (a)
FLOAT_ARG_TYPE a;
{
union flt_or_value intify;
#define perform_fixsfsi(a) return (SItype) a
perform_fixsfsi (FLOATIFY (a));
}
#endif
asm(" .text
.even
.globl ___fixsfsi
___fixsfsi:
movel sp@(4),sp@-
jbsr ___extendsfdf2
addqw #4,sp
movel d1,sp@-
movel d0,sp@-
jbsr ___fixdfsi
addqw #8,sp
rts
");
#endif
#ifdef L_floatsisf
#if 0
FLOAT_VALUE_TYPE
__floatsisf (a)
SItype a;
{
union flt_or_value intify;
#define perform_floatsisf(a) return INTIFY ((float) a)
perform_floatsisf (a);
}
#endif
asm(" .text
.even
.globl ___floatsisf
___floatsisf:
movel sp@(4),sp@-
jbsr ___floatsidf
addqw #4,sp
movel d1,sp@-
movel d0,sp@-
jbsr ___truncdfsf2
addqw #8,sp
rts
");
#endif
#ifdef L_eqsf2
#if 0
SItype
__eqsf2 (a, b)
FLOAT_ARG_TYPE a, b;
{
union flt_or_int intify;
/* Value == 0 iff a == b. */
#define perform_eqsf2(a, b) return !(a == b)
perform_eqsf2 (FLOATIFY (a), FLOATIFY (b));
}
#endif
asm(" .text
.even
.globl ___eqsf2
___eqsf2:
movel d2,sp@-
movel sp@(8),d1
movel sp@(12),sp@-
movel d1,sp@-
jbsr ___cmpsf2
addqw #8,sp
tstl d0
sne d0
moveq #1,d2
andl d2,d0
movel sp@+,d2
rts
");
#endif
#ifdef L_nesf2
#if 0
SItype
__nesf2 (a, b)
FLOAT_ARG_TYPE a, b;
{
union flt_or_int intify;
/* Value != 0 iff a != b. */
#define perform_nesf2(a, b) return a != b
perform_nesf2 (FLOATIFY (a), FLOATIFY (b));
}
#endif
asm(" .text
.even
.globl ___nesf2
___nesf2:
movel d2,sp@-
movel sp@(8),d1
movel sp@(12),sp@-
movel d1,sp@-
jbsr ___cmpsf2
addqw #8,sp
tstl d0
sne d0
moveq #1,d2
andl d2,d0
movel sp@+,d2
rts
");
#endif
#ifdef L_gtsf2
#if 0
SItype
__gtsf2 (a, b)
FLOAT_ARG_TYPE a, b;
{
union flt_or_int intify;
/* Value > 0 iff a > b. */
#define perform_gtsf2(a, b) return a > b
perform_gtsf2 (FLOATIFY (a), FLOATIFY (b));
}
#endif
asm(" .text
.even
.globl ___gtsf2
___gtsf2:
movel d2,sp@-
movel sp@(8),d1
movel sp@(12),sp@-
movel d1,sp@-
jbsr ___cmpsf2
addqw #8,sp
tstl d0
sgt d0
moveq #1,d2
andl d2,d0
movel sp@+,d2
rts
");
#endif
#ifdef L_gesf2
#if 0
SItype
__gesf2 (a, b)
FLOAT_ARG_TYPE a, b;
{
union flt_or_int intify;
/* Value >= 0 iff a >= b. */
#define perform_gesf2(a, b) return (a >= b) - 1
perform_gesf2 (FLOATIFY (a), FLOATIFY (b));
}
#endif
asm(" .text
.even
.globl ___gesf2
___gesf2:
movel d2,sp@-
movel sp@(8),d1
movel sp@(12),sp@-
movel d1,sp@-
jbsr ___cmpsf2
addqw #8,sp
tstl d0
sge d0
moveq #1,d2
andl d2,d0
subql #1,d0
movel sp@+,d2
rts
");
#endif
#ifdef L_ltsf2
#if 0
SItype
__ltsf2 (a, b)
FLOAT_ARG_TYPE a, b;
{
union flt_or_int intify;
/* Value < 0 iff a < b. */
#define perform_ltsf2(a, b) return -(a < b)
perform_ltsf2 (FLOATIFY (a), FLOATIFY (b));
}
#endif
asm(" .text
.even
.globl ___ltsf2
___ltsf2:
movel d2,sp@-
movel sp@(8),d1
movel sp@(12),sp@-
movel d1,sp@-
jbsr ___cmpsf2
addqw #8,sp
tstl d0
slt d0
moveq #1,d2
andl d2,d0
negl d0
movel sp@+,d2
rts
");
#endif
#ifdef L_lesf2
#if 0
SItype
__lesf2 (a, b)
FLOAT_ARG_TYPE a, b;
{
union flt_or_int intify;
/* Value <= 0 iff a <= b. */
#define perform_lesf2(a, b) return 1 - (a <= b); /* note bug fix from libgcc1.c */
perform_lesf2 (FLOATIFY (a), FLOATIFY (b));
}
#endif
asm(" .text
.even
.globl ___lesf2
___lesf2:
movel d2,sp@-
movel sp@(8),d0
moveq #1,d2
movel sp@(12),sp@-
movel d0,sp@-
jbsr ___cmpsf2
addqw #8,sp
tstl d0
jgt L20
moveq #0,d2
L20:
movel d2,d0
movel sp@+,d2
rts
");
#endif
#endif /* # if 0 to ensure that the above functions are not compiled */
#ifdef L_fxussfsi
#include <limits.h>
unsigned SItype
__fixunssfsi (float a)
{
if (a >= ((float) LONG_MAX)+1)
return (SItype) (a + LONG_MIN) - LONG_MIN;
return (SItype) a;
}
#endif
#ifdef L_gccbcmp
/* Like bcmp except the sign is meaningful.
Reult is negative if S1 is less than S2,
positive if S1 is greater, 0 if S1 and S2 are equal. */
int
__gcc_bcmp (s1, s2, size)
unsigned char *s1, *s2;
size_t size;
{
while (size > 0)
{
unsigned char c1 = *s1++, c2 = *s2++;
if (c1 != c2)
return c1 - c2;
size--;
}
return 0;
}
#endif