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65c83606fb
Retro68/gcc/libgcc/config/cr16/lib1funcs.S
Wolfgang Thaller 65c83606fb Update gcc to 7.2.0, binutils to 2.29, newlib to 2.5.0
2017-10-07 02:16:47 +02:00

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/* Libgcc Target specific implementation.
Copyright (C) 2012-2017 Free Software Foundation, Inc.
Contributed by KPIT Cummins Infosystems Limited.
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation; either version 3, or (at your option) any later
version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
Under Section 7 of GPL version 3, you are granted additional
permissions described in the GCC Runtime Library Exception, version
3.1, as published by the Free Software Foundation.
You should have received a copy of the GNU General Public License and
a copy of the GCC Runtime Library Exception along with this program;
see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
<http://www.gnu.org/licenses/>. */
#ifdef L_mulsi3
.text
.align 4
.globl ___mulsi3
___mulsi3:
movw r4,r0
movw r2,r1
/* Extended multiplication between the 2 lower words */
muluw r1,(r1,r0)
/* Multiply the lower word of each parameter */
mulw r2,r5
/* With the higher word of the other */
mulw r3,r4
/* Add products to the higher part of the final result */
addw r4,r1
addw r5,r1
jump (ra)
#endif
#ifdef L_divdi3
.text
.align 4
.globl ___divdi3
___divdi3:
push $4, r7, ra
/* Param #1 Long Long low bit first */
loadd 12(sp), (r1, r0)
loadd 16(sp), (r3, r2)
/* Param #2 Long Long low bit first */
loadd 20(sp), (r5, r4)
loadd 24(sp), (r7, r6)
/* Set neg to 0 */
movw $0, r10
subd $16, (sp)
/* Compare if param1 is greater than 0 */
cmpw $0, r3
ble L4
/* Invert param1 and neg */
movd $-1, (r9, r8) /* Temp set to FFFFFFFF */
xord (r9, r8), (r1, r0) /* Xor low bits of param 1 with temp */
xord (r9, r8), (r3, r2) /* Xor high bits of param 1 with temp */
addd $1, (r1, r0) /* Add 1 to low bits of param 1 */
xorw $1, r10 /* Invert neg */
bcc L4 /* If no carry occurred go to L4 */
addd $1, (r3, r2) /* Add 1 to high bits of param 1 */
L4: stord (r1, r0), 0(sp)
stord (r3, r2), 4(sp)
/* Compare if param2 is greater than 0 */
cmpw $0, r7
ble L5
/* Invert param2 and neg */
movd $-1, (r9, r8) /* Temp set to FFFFFFFF */
xord (r9, r8), (r5, r4) /* Xor low bits of param 2 with temp */
xord (r9, r8), (r7, r6) /* Xor high bits of param 2 with temp */
addd $1, (r5, r4) /* Add 1 to low bits of param 2 */
xorw $1, r10 /* Invert neg */
bcc L5 /* If no carry occurred go to L5 */
addd $1, (r7, r6) /* Add 1 to high bits of param 2 */
L5: stord (r5, r4), 8(sp)
stord (r7, r6), 12(sp)
movw $0, r2
/* Call udivmoddi3 */
#ifdef __PIC__
loadd ___udivmoddi3@cGOT(r12), (r1,r0)
jal (r1,r0)
#else
bal (ra), ___udivmoddi3
#endif
/* If (neg) */
addd $16, (sp)
cmpw $0, r10 /* Compare 0 with neg */
beq Lexit__
/* Neg = -Neg */
xord (r9, r8), (r1, r0) /* Xor low bits of ures with temp */
xord (r9, r8), (r3, r2) /* Xor high bits of ures with temp */
addd $1, (r1, r0) /* Add 1 to low bits of ures */
bcc Lexit__
addd $1, (r3, r2) /* Add 1 to high bit of ures */
Lexit__:
# ifdef __ID_SHARED_LIB__
pop $2, r12
# endif
popret $4, r7, ra
#endif
#ifdef L_lshrdi3
.text
.align 4
.globl ___lshrdi3
___lshrdi3:
push $3, r7
/* Load parameters from stack in this order */
movw r2, r6 /* Number of shifts */
loadd 6(sp), (r1, r0) /* Low bits */
loadd 10(sp), (r3, r2)/* High bits */
xorw $-1, r6 /* Invert number of shifts */
addw $1, r6 /* Add 1 by number of shifts */
movw r6, r7 /* Copy number of shifts */
tbit $15, r6 /* Test if number is negative */
bfs L2 /* If negative jump to L2 */
movd (r1, r0), (r9, r8) /* Copy low bits */
subw $32, r7 /* Calc how many bits will overflow */
/* Shift the temp low bit to the right to see the overflowing bits */
lshd r7, (r9, r8)
cmpw $32, r6 /* If number of shifts is higher than 31 */
blt L1 /* Shift by moving */
lshd r6, (r3, r2) /* Shift high bits */
lshd r6, (r1, r0) /* Shift low bits */
addd (r9, r8), (r3, r2) /* Add overflow to the high bits */
popret $3, r7 /* Return */
L1: movd $0, (r1, r0) /* Reset low bit */
movd (r9, r8), (r3, r2) /* Add the overflow from the low bit */
popret $3, r7 /* Return */
L2: movd (r3, r2), (r9, r8) /* Copy high bits */
addw $32, r7 /* Calc how many bits will overflow */
/* Shift the temp low bit to the left to see the overflowing bits */
lshd r7, (r9, r8)
cmpw $-32, r6 /* If number of shifts is lower than -31 */
bgt L3 /* Shift by moving */
lshd r6, (r1, r0) /* Shift low bits */
lshd r6, (r3, r2) /* Shift high bits */
addd (r9, r8), (r1, r0) /* Add overflow to the low bits */
popret $3, r7 /* Return */
L3: movd $0, (r3, r2) /* Reset the high bit */
movd (r9, r8), (r1, r0) /* Add the overflow from the high bit */
popret $3, r7 /* Return */
#endif
#ifdef L_moddi3
.text
.align 4
.globl ___moddi3
___moddi3:
push $4, r7, ra
/* Param #1 Long Long low bit first */
loadd 12(sp), (r1, r0)
loadd 16(sp), (r3, r2)
/* Param #2 Long Long low bit first */
loadd 20(sp), (r5, r4)
loadd 24(sp), (r7, r6)
subd $18, (sp)
/* Set neg to 0 */
storw $0, 16(sp)
movd $-1, (r9, r8) /* Temp set to FFFFFFFF */
/* Compare if param1 is greater than 0 */
cmpw $0, r3
ble L4
/* Invert param1 and neg */
xord (r9, r8), (r1, r0) /* Xor low bits of param 1 with temp */
xord (r9, r8), (r3, r2) /* Xor high bits of param 1 with temp */
addd $1, (r1, r0) /* Add 1 to low bits of param 1 */
storw $1, 16(sp)
bcc L4 /* If no carry occurred go to L4 */
addd $1, (r3, r2) /* Add 1 to high bits of param 1 */
L4: stord (r1, r0), 0(sp)
stord (r3, r2), 4(sp)
/* Compare if param2 is greater than 0 */
cmpw $0, r7
ble L5
/* Invert param2 and neg */
xord (r9, r8), (r5, r4) /* Xor low bits of param 2 with temp */
xord (r9, r8), (r7, r6) /* Xor high bits of param 2 with temp */
addd $1, (r5, r4) /* Add 1 to low bits of param 2 */
bcc L5 /* If no carry occurred go to L5 */
addd $1, (r7, r6) /* Add 1 to high bits of param 2 */
L5: stord (r5, r4), 8(sp)
stord (r7, r6), 12(sp)
movw $1, r2
/* Call udivmoddi3 */
#ifdef __PIC__
loadd ___udivmoddi3@cGOT(r12), (r1,r0)
jal (r1,r0)
#else
bal (ra), ___udivmoddi3
#endif
/* If (neg) */
loadw 16(sp), r10 /* Load neg from stack */
addd $18, (sp)
cmpw $0, r10 /* Compare 0 with neg */
beq Lexit__
/* Neg = -Neg */
xord (r9, r8), (r1, r0) /* Xor low bits of ures with temp */
xord (r9, r8), (r3, r2) /* Xor high bits of ures with temp */
addd $1, (r1, r0) /* Add 1 to low bits of ures */
bcc Lexit__
addd $1, (r3, r2) /* Add 1 to high bit of ures */
Lexit__:
# ifdef __ID_SHARED_LIB__
pop $2, r12
# endif
popret $4, r7, ra
#endif
#ifdef L_muldi3
.text
.align 4
.globl ___muldi3
___muldi3:
push $2, r13
push $7, r7
/* Param #1 Long Long low bit first */
loadd 18(sp), (r1, r0)
loadd 22(sp), (r3, r2)
/* Param #2 Long Long low bit first */
loadd 26(sp), (r5, r4)
loadd 30(sp), (r7, r6)
/* Clear r13, r12 */
movd $0, (r12)
movd $0, (r13)
/* Set neg */
movw $0, r10
/* Compare if param1 is greater than 0 */
cmpw $0, r3
ble L1
/* Invert param1 and neg */
movd $-1, (r9, r8) /* Temp set to FFFFFFFF */
xord (r9, r8), (r1, r0) /* Xor low bits of param 1 with temp */
xord (r9, r8), (r3, r2) /* Xor high bits of param 1 with temp */
addd $1, (r1, r0) /* Add 1 to low bits of param 1 */
xorw $1, r10 /* Invert neg */
bcc L1 /* If no carry occurred go to L1 */
addd $1, (r3, r2) /* Add 1 to high bits of param 1 */
L1: /* Compare if param2 is greater than 0 */
cmpw $0, r7
ble L2
/* Invert param2 and neg */
movd $-1, (r9, r8) /* Temp set to FFFFFFFF */
xord (r9, r8), (r5, r4) /* Xor low bits of param 2 with temp */
xord (r9, r8), (r7, r6) /* Xor high bits of param 2 with temp */
addd $1, (r5, r4) /* Add 1 to low bits of param 2 */
xorw $1, r10 /* Invert neg */
bcc L2 /* If no carry occurred go to L2 */
addd $1, (r7, r6) /* Add 1 to high bits of param 2 */
L2: storw r10, 18(sp) /* Store neg to stack so we can use r10 */
/* B*D */
/* Bl*Dl */
macuw r0, r4, (r12) /* Multiply r0 and r4 and add to r12 */
/* Bh*Dl */
movd $0, (r9, r8) /* Clear r9, r8 */
macuw r1, r4, (r9, r8) /* Multiply Bh*Dl and add result to (r9, r8) */
movw r9, r10 /* Shift left: r9 to r10 */
lshd $16, (r9, r8) /* Shift left: r8 to r9 */
movw $0, r11 /* Clear r11 */
addd (r9, r8), (r12) /* Add (r9, r8) to r12 */
bcc L3 /* If no carry occurred go to L3 */
addd $1, (r13) /* If carry occurred add 1 to r13 */
L3: addd (r11, r10), (r13) /* Add (r11, r10) to r13 */
/* Bl*Dh */
movd $0, (r9, r8) /* Clear (r9, r8) */
macuw r0, r5, (r9, r8) /* Multiply r0 and r5 and stor in (r9, r8) */
movw r9, r10 /* Shift left: r9 to r10 */
lshd $16, (r9, r8) /* Shift left: r8 to r9 */
addd (r9, r8), (r12) /* Add (r9, r8) to r12 */
bcc L4 /* If no carry occurred go to L4 */
addd $1, (r13) /* If carry occurred add 1 to r13 */
L4: addd (r11, r10), (r13) /* Add (r11, r10) to r13 */
/* Bh*Dh */
movd $0, (r9, r8) /* Clear (r9, r8) */
macuw r1, r5, (r9, r8) /* Multiply r1 and r5 and add to r13 */
addd (r9, r8), (r13) /* Add (r9, r8) to result */
/* A*D */
/* Al*Dl */
movd $0, (r11, r10) /* Clear (r11, r10) */
macuw r2, r4, (r11, r10)/* Multiply r2 and r4 and add to (r11, r10) */
addd (r13), (r11, r10) /* Copy r13 to (r11, r10) */
/* Al*Dh */
movd $0, (r9, r8) /* Clear (r9, r8) */
macuw r2, r5, (r9, r8) /* Multiply r2 and r5 and add to (r9, r8) */
addw r8, r11 /* Add r8 to r11 */
/* Ah*Dl */
muluw r3, (r5, r4) /* Multiply r3 and r4 and stor in (r5, r4) */
addw r4, r11 /* Add r4 to r11 */
/* B*C */
/* Bl*Cl */
movd $0, (r9, r8) /* Clear (r9, r8) */
macuw r0, r6, (r9, r8) /* Multiply r0 and r6 and add to (r9, r8) */
addd (r9, r8), (r11, r10)/* Add (r9, r8) to result */
/* Bl*Ch */
movd $0, (r9, r8) /* Clear (r9, r8) */
macuw r0, r7, (r9, r8) /* Multiply r0 and r7 and add to (r9, r8) */
addw r8, r11 /* Add r8 to r11 */
loadw 18(sp), r8 /* Load neg from stack */
/* Bh*Cl */
muluw r1, (r7, r6) /* Multiply r1 and r6 and stor in (r7, r6) */
addw r6, r11 /* Add r6 to r11 */
E1: movd (r11, r10), (r3, r2)
movd (r12), (r1, r0)
/* If (neg) */
cmpw $0, r8 /* Compare 0 with neg */
beq Lexit__
/* Neg = -Neg */
movd $-1, (r9, r8) /* Temp set to FFFFFFFF */
xord (r9, r8), (r1, r0) /* Xor low bits of result with temp */
xord (r9, r8), (r3, r2) /* Xor high bits of result with temp */
addd $1, (r1, r0) /* Add 1 to low bits of result */
bcc Lexit__
addd $1, (r3, r2) /* Add 1 to high bit of result */
Lexit__:
pop $7, r7
popret $2, r13
#endif
#ifdef L_negdi2
.text
.align 4
.globl ___negdi2
___negdi2:
/* Load parameter from the registers in this order */
loadd 0(sp), (r1, r0)
loadd 4(sp), (r3, r2)
movd $-1, (r6, r5) /* Set temp to FFFFFFFF */
xord (r6, r5), (r1, r0) /* Xor low bits with temp */
xord (r6, r5), (r3, r2) /* Xor high bits with temp */
addd $1, (r1, r0) /* Add one */
jcc (ra)
addd $1, (r3, r2) /* Add the carry to the high bits */
jump (ra)
#endif
#ifdef L_udivdi3
.text
.align 4
.globl ___udivdi3
___udivdi3:
movw $0, r2
br ___udivmoddi3
#endif
#ifdef L_udivmoddi3
.text
.align 4
.globl ___udivmoddi3
___udivmoddi3:
push $2, r13
push $7, r7
/* Param #1 Long Long low bit first */
loadd 18(sp), (r1, r0)
storw r2, 18(sp) /* Store modulo on stack */
loadd 22(sp), (r3, r2)
/* Param #2 Long Long low bit first */
loadd 26(sp), (r5, r4)
loadd 30(sp), (r7, r6)
/* Set ures to 0 */
movd $0, (r13)
movd $0, (r12)
cmpd (r12), (r5, r4)
beq LE
L5: movd $1, (r9, r8) /* Store 1 in low bits from bit */
movd $0, (r11, r10) /* Store 0 in high bits from bit */
L6: /* While (den < num && (!den & (1LL<<63))) */
/* Compare high bits from param 1 and param 2 */
cmpd (r7, r6), (r3, r2)
bhi L10 /* If param 2 is greater go to L10 */
bne L8 /* If param 1 is greater go to L8 */
cmpd (r5, r4), (r1, r0) /* Compare low bits from param 1 and param 2 */
/* If param 2 is greater or the same go to L1 */
bhs L10
L8: /* Check if most significant bit of param 2 is set */
tbit $15, r7
bfs L10 /* If PSR is set go to L10 */
/* Shift bit */
lshd $1, (r11, r10) /* Shift left: high bits of bit */
/* Check if most significant bit of bit is set */
tbit $15, r9
lshd $1, (r9, r8) /* Shift left: low bits of bit */
bfs L28 /* If PSR is set go to L28 */
L9: /* Shift b */
lshd $1, (r7, r6) /* Shift left: high bits of param 2 */
/* Check if most significant bit of param 2 is set */
tbit $15, r5
lshd $1, (r5, r4) /* Shift left: low bits of param 2 */
bfc L6 /* If PSR is set go to L6 */
addw $1, r6 /* Add 1 to the highest bits of b */
br L6 /* Go to L6 */
L10: /* While (bit) */
cmpd $0, (r11, r10)
bne L11
cmpd $0, (r9, r8)
beq E1
L11: /* If (num >= den) */
cmpd (r3, r2), (r7, r6) /* Compare high bits of param 1 and param 2 */
blo L15 /* If param 1 lower than param 2 go to L15 */
bne L12 /* If not equal go to L12 */
cmpd (r1, r0), (r5, r4) /* Compare low bits of param 1 and param 2 */
blo L15 /* If param 1 lower than param 2 go to L15 */
L12: /* Ures |= bit */
ord (r11, r10), (r13)
ord (r9, r8), (r12)
/* Num -= den */
subd (r7, r6), (r3, r2) /* Subtract highest 32 bits from each other */
subd (r5, r4), (r1, r0) /* Subtract lowest 32 bits from each other */
bcc L15 /* If no carry occurred go to L15 */
subd $1, (r3, r2) /* Subtract the carry */
L15: /* Shift bit to the right */
lshd $-1, (r9, r8) /* Shift right: low bits of bit */
/* Check if least significant bit of high bits is set */
tbit $0, r10
lshd $-1, (r11, r10) /* Shift right: high bits of bit */
bfs L18 /* If PSR is set go to L18 */
L17: /* Shift param#2 to the right */
lshd $-1, (r5, r4) /* Shift right: low bits of param 2 */
/* Check if least significant bit of high bits is set */
tbit $0, r6
lshd $-1, (r7, r6) /* Shift right: high bits of param 2 */
bfc L10 /* If PSR is not set go to L10 */
/* Or with 0x8000 to set most significant bit */
orw $32768, r5
br L10 /* Go to L10 */
L18: /* Or with 0x8000 to set most significant bit */
orw $32768, r9
br L17
L28: /* Left shift bit */
addw $1, r10 /* Add 1 to highest bits of bit */
br L9 /* Go to L9 */
LE: cmpd (r12), (r7, r6)
bne L5
excp dvz
br Lexit__
E1: loadw 18(sp), r4
cmpw $0, r4
bne Lexit__
/* Return result */
movd (r12), (r1, r0)
movd (r13), (r3, r2)
Lexit__:
pop $7, r7
popret $2, r13
#endif
#ifdef L_umoddi3
.text
.align 4
.globl ___umoddi3
___umoddi3:
movw $1, r2
br ___udivmoddi3
#endif
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