summaryrefslogtreecommitdiff
path: root/runtime
diff options
context:
space:
mode:
Diffstat (limited to 'runtime')
-rw-r--r--runtime/arm/int64.s45
-rw-r--r--runtime/ia32/int64.s57
-rw-r--r--runtime/powerpc/int64.s50
-rw-r--r--runtime/test/test_int64.c19
4 files changed, 0 insertions, 171 deletions
diff --git a/runtime/arm/int64.s b/runtime/arm/int64.s
index 6b03351..58ac024 100644
--- a/runtime/arm/int64.s
+++ b/runtime/arm/int64.s
@@ -77,36 +77,6 @@ __i64_scmp:
.type __i64_scmp, %function
.size __i64_scmp, . - __i64_scmp
-@@@ Opposite
-
- .global __i64_neg
-__i64_neg:
- rsbs r0, r0, #0
- rsc r1, r1, #0
- bx lr
- .type __i64_neg, %function
- .size __i64_neg, . - __i64_neg
-
-@@@ Addition
-
- .global __i64_add
-__i64_add:
- adds r0, r0, r2
- adc r1, r1, r3
- bx lr
- .type __i64_add, %function
- .size __i64_add, . - __i64_add
-
-@@@ Subtraction
-
- .global __i64_sub
-__i64_sub:
- subs r0, r0, r2
- sbc r1, r1, r3
- bx lr
- .type __i64_sub, %function
- .size __i64_sub, . - __i64_sub
-
@ Note on ARM shifts: the shift amount is taken modulo 256.
@ Therefore, unsigned shifts by 32 bits or more produce 0.
@@ -167,21 +137,6 @@ __i64_sar:
.type __i64_sar, %function
.size __i64_sar, . - __i64_sar
-@@@ Multiplication
-
- .global __i64_mul
-__i64_mul:
- push {r4, r5}
- mov r4, r0 @ save first arg in r4,r5
- mov r5, r1
- umull r0, r1, r2, r4 @ 64-bit product of low halves
- mla r1, r2, r5, r1 @ add 32-bit products low half * high half
- mla r1, r3, r4, r1 @ to high half of result
- pop {r4, r5}
- bx lr
- .type __i64_mul, %function
- .size __i64_mul, . - __i64_mul
-
@@@ Auxiliary function for division and modulus. Not exported.
@ On entry: N = (r0, r1) numerator D = (r2, r3) divisor
diff --git a/runtime/ia32/int64.s b/runtime/ia32/int64.s
index 8fd8151..06a3b49 100644
--- a/runtime/ia32/int64.s
+++ b/runtime/ia32/int64.s
@@ -36,63 +36,6 @@
.text
-# Opposite
-
- .globl __i64_neg
- .balign 16
-__i64_neg:
- movl 4(%esp), %eax
- movl 8(%esp), %edx
- negl %eax
- adcl $0, %edx
- negl %edx
- ret
- .type __i64_neg, @function
- .size __i64_neg, . - __i64_neg
-
-# Addition
-
- .globl __i64_add
- .balign 16
-__i64_add:
- movl 4(%esp), %eax
- movl 8(%esp), %edx
- addl 12(%esp), %eax
- adcl 16(%esp), %edx
- ret
- .type __i64_add, @function
- .size __i64_add, . - __i64_add
-
-# Subtraction
-
- .globl __i64_sub
- .balign 16
-__i64_sub:
- movl 4(%esp), %eax
- movl 8(%esp), %edx
- subl 12(%esp), %eax
- sbbl 16(%esp), %edx
- ret
- .type __i64_sub, @function
- .size __i64_sub, . - __i64_sub
-
-# Multiplication
-
- .globl __i64_mul
- .balign 16
-__i64_mul:
- movl 4(%esp), %eax
- mull 12(%esp) # edx:eax = xlo * ylo
- movl 4(%esp), %ecx
- imull 16(%esp), %ecx # ecx = xlo * yhi
- addl %ecx, %edx
- movl 12(%esp), %ecx # ecx = xhi * ylo
- imull 8(%esp), %ecx
- addl %ecx, %edx
- ret
- .type __i64_mul, @function
- .size __i64_mul, . - __i64_mul
-
# Division and remainder
# Auxiliary function, not exported.
diff --git a/runtime/powerpc/int64.s b/runtime/powerpc/int64.s
index 34b65b5..247e3cd 100644
--- a/runtime/powerpc/int64.s
+++ b/runtime/powerpc/int64.s
@@ -45,56 +45,6 @@
.text
-### Opposite
-
- .balign 16
- .globl __i64_neg
-__i64_neg:
- subfic r4, r4, 0 # RL = -XL and set borrow iff XL != 0
- subfze r3, r3 # RH = -XH - borrow
- blr
- .type __i64_neg, @function
- .size __i64_neg, .-__i64_neg
-
-### Addition
-
- .balign 16
- .globl __i64_add
-__i64_add:
- addc r4, r4, r6 # RL = XL + YL and set carry if overflow
- adde r3, r3, r5 # RH = XH + YH + carry
- blr
- .type __i64_add, @function
- .size __i64_add, .-__i64_add
-
-### Subtraction
-
- .balign 16
- .globl __i64_sub
-__i64_sub:
- subfc r4, r6, r4 # RL = XL - YL and set borrow if underflow
- subfe r3, r5, r3 # RH = XH - YH - borrow
- blr
- .type __i64_sub, @function
- .size __i64_sub, .-__i64_sub
-
-### Multiplication
-
- .balign 16
- .globl __i64_mul
-__i64_mul:
- # Form intermediate products
- mulhwu r7, r4, r6 # r7 = high half of XL * YL
- mullw r8, r3, r6 # r8 = low half of XH * YL
- mullw r9, r4, r5 # r9 = low half of XL * YH
- mullw r4, r4, r6 # r4 = low half of XL * YL = low half of result
- # Reconstruct high half of result
- add r3, r7, r8
- add r3, r3, r9
- blr
- .type __i64_mul, @function
- .size __i64_mul, .-__i64_mul
-
### Helper function for division and modulus. Not exported.
# Input: numerator N in (r3,r4), divisor D in (r5,r6)
# Output: quotient Q in (r7,r8), remainder R in (r3,r4)
diff --git a/runtime/test/test_int64.c b/runtime/test/test_int64.c
index 11adce3..49e732a 100644
--- a/runtime/test/test_int64.c
+++ b/runtime/test/test_int64.c
@@ -41,10 +41,6 @@
typedef unsigned long long u64;
typedef signed long long s64;
-extern s64 __i64_neg(s64 x);
-extern s64 __i64_add(s64 x, s64 y);
-extern s64 __i64_sub(s64 x, s64 y);
-extern s64 __i64_mul(s64 x, s64 y);
extern u64 __i64_udiv(u64 x, u64 y);
extern u64 __i64_umod(u64 x, u64 y);
extern s64 __i64_sdiv(s64 x, s64 y);
@@ -78,21 +74,6 @@ static void test1(u64 x, u64 y)
int i;
double f, g;
- z = __i64_neg(x);
- if (z != -x)
- error++, printf("- %016llx = %016llx, expected %016llx\n", x, z, -x);
- z = __i64_add(x, y);
- if (z != x + y)
- error++, printf("%016llx + %016llx = %016llx, expected %016llx\n", x, y, z, x + y);
-
- z = __i64_sub(x, y);
- if (z != x - y)
- error++, printf("%016llx - %016llx = %016llx, expected %016llx\n", x, y, z, x - y);
-
- z = __i64_mul(x, y);
- if (z != x * y)
- error++, printf("%016llx * %016llx = %016llx, expected %016llx\n", x, y, z, x * y);
-
if (y != 0) {
z = __i64_udiv(x, y);