зеркало из https://github.com/mozilla/libprio.git
314 строки
6.9 KiB
ArmAsm
314 строки
6.9 KiB
ArmAsm
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/ This Source Code Form is subject to the terms of the Mozilla Public
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/ License, v. 2.0. If a copy of the MPL was not distributed with this
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/ file, You can obtain one at http://mozilla.org/MPL/2.0/.
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.text
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/ ebp - 36: caller's esi
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/ ebp - 32: caller's edi
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/ ebp - 28:
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/ ebp - 24:
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/ ebp - 20:
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/ ebp - 16:
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/ ebp - 12:
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/ ebp - 8:
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/ ebp - 4:
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/ ebp + 0: caller's ebp
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/ ebp + 4: return address
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/ ebp + 8: a argument
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/ ebp + 12: a_len argument
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/ ebp + 16: b argument
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/ ebp + 20: c argument
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/ registers:
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/ eax:
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/ ebx: carry
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/ ecx: a_len
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/ edx:
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/ esi: a ptr
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/ edi: c ptr
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.globl s_mpv_mul_d
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.type s_mpv_mul_d,@function
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s_mpv_mul_d:
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push %ebp
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mov %esp,%ebp
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sub $28,%esp
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push %edi
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push %esi
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push %ebx
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movl $0,%ebx / carry = 0
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mov 12(%ebp),%ecx / ecx = a_len
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mov 20(%ebp),%edi
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cmp $0,%ecx
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je L2 / jmp if a_len == 0
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mov 8(%ebp),%esi / esi = a
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cld
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L1:
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lodsl / eax = [ds:esi]; esi += 4
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mov 16(%ebp),%edx / edx = b
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mull %edx / edx:eax = Phi:Plo = a_i * b
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add %ebx,%eax / add carry (%ebx) to edx:eax
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adc $0,%edx
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mov %edx,%ebx / high half of product becomes next carry
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stosl / [es:edi] = ax; edi += 4;
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dec %ecx / --a_len
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jnz L1 / jmp if a_len != 0
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L2:
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mov %ebx,0(%edi) / *c = carry
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pop %ebx
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pop %esi
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pop %edi
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leave
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ret
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nop
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/ ebp - 36: caller's esi
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/ ebp - 32: caller's edi
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/ ebp - 28:
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/ ebp - 24:
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/ ebp - 20:
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/ ebp - 16:
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/ ebp - 12:
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/ ebp - 8:
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/ ebp - 4:
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/ ebp + 0: caller's ebp
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/ ebp + 4: return address
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/ ebp + 8: a argument
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/ ebp + 12: a_len argument
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/ ebp + 16: b argument
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/ ebp + 20: c argument
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/ registers:
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/ eax:
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/ ebx: carry
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/ ecx: a_len
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/ edx:
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/ esi: a ptr
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/ edi: c ptr
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.globl s_mpv_mul_d_add
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.type s_mpv_mul_d_add,@function
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s_mpv_mul_d_add:
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push %ebp
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mov %esp,%ebp
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sub $28,%esp
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push %edi
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push %esi
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push %ebx
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movl $0,%ebx / carry = 0
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mov 12(%ebp),%ecx / ecx = a_len
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mov 20(%ebp),%edi
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cmp $0,%ecx
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je L4 / jmp if a_len == 0
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mov 8(%ebp),%esi / esi = a
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cld
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L3:
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lodsl / eax = [ds:esi]; esi += 4
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mov 16(%ebp),%edx / edx = b
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mull %edx / edx:eax = Phi:Plo = a_i * b
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add %ebx,%eax / add carry (%ebx) to edx:eax
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adc $0,%edx
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mov 0(%edi),%ebx / add in current word from *c
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add %ebx,%eax
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adc $0,%edx
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mov %edx,%ebx / high half of product becomes next carry
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stosl / [es:edi] = ax; edi += 4;
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dec %ecx / --a_len
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jnz L3 / jmp if a_len != 0
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L4:
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mov %ebx,0(%edi) / *c = carry
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pop %ebx
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pop %esi
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pop %edi
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leave
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ret
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nop
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/ ebp - 36: caller's esi
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/ ebp - 32: caller's edi
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/ ebp - 28:
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/ ebp - 24:
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/ ebp - 20:
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/ ebp - 16:
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/ ebp - 12:
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/ ebp - 8:
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/ ebp - 4:
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/ ebp + 0: caller's ebp
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/ ebp + 4: return address
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/ ebp + 8: a argument
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/ ebp + 12: a_len argument
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/ ebp + 16: b argument
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/ ebp + 20: c argument
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/ registers:
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/ eax:
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/ ebx: carry
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/ ecx: a_len
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/ edx:
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/ esi: a ptr
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/ edi: c ptr
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.globl s_mpv_mul_d_add_prop
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.type s_mpv_mul_d_add_prop,@function
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s_mpv_mul_d_add_prop:
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push %ebp
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mov %esp,%ebp
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sub $28,%esp
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push %edi
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push %esi
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push %ebx
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movl $0,%ebx / carry = 0
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mov 12(%ebp),%ecx / ecx = a_len
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mov 20(%ebp),%edi
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cmp $0,%ecx
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je L6 / jmp if a_len == 0
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cld
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mov 8(%ebp),%esi / esi = a
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L5:
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lodsl / eax = [ds:esi]; esi += 4
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mov 16(%ebp),%edx / edx = b
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mull %edx / edx:eax = Phi:Plo = a_i * b
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add %ebx,%eax / add carry (%ebx) to edx:eax
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adc $0,%edx
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mov 0(%edi),%ebx / add in current word from *c
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add %ebx,%eax
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adc $0,%edx
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mov %edx,%ebx / high half of product becomes next carry
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stosl / [es:edi] = ax; edi += 4;
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dec %ecx / --a_len
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jnz L5 / jmp if a_len != 0
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L6:
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cmp $0,%ebx / is carry zero?
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jz L8
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mov 0(%edi),%eax / add in current word from *c
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add %ebx,%eax
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stosl / [es:edi] = ax; edi += 4;
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jnc L8
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L7:
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mov 0(%edi),%eax / add in current word from *c
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adc $0,%eax
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stosl / [es:edi] = ax; edi += 4;
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jc L7
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L8:
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pop %ebx
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pop %esi
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pop %edi
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leave
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ret
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nop
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/ ebp - 20: caller's esi
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/ ebp - 16: caller's edi
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/ ebp - 12:
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/ ebp - 8: carry
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/ ebp - 4: a_len local
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/ ebp + 0: caller's ebp
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/ ebp + 4: return address
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/ ebp + 8: pa argument
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/ ebp + 12: a_len argument
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/ ebp + 16: ps argument
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/ ebp + 20:
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/ registers:
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/ eax:
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/ ebx: carry
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/ ecx: a_len
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/ edx:
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/ esi: a ptr
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/ edi: c ptr
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.globl s_mpv_sqr_add_prop
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.type s_mpv_sqr_add_prop,@function
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s_mpv_sqr_add_prop:
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push %ebp
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mov %esp,%ebp
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sub $12,%esp
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push %edi
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push %esi
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push %ebx
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movl $0,%ebx / carry = 0
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mov 12(%ebp),%ecx / a_len
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mov 16(%ebp),%edi / edi = ps
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cmp $0,%ecx
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je L11 / jump if a_len == 0
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cld
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mov 8(%ebp),%esi / esi = pa
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L10:
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lodsl / %eax = [ds:si]; si += 4;
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mull %eax
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add %ebx,%eax / add "carry"
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adc $0,%edx
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mov 0(%edi),%ebx
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add %ebx,%eax / add low word from result
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mov 4(%edi),%ebx
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stosl / [es:di] = %eax; di += 4;
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adc %ebx,%edx / add high word from result
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movl $0,%ebx
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mov %edx,%eax
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adc $0,%ebx
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stosl / [es:di] = %eax; di += 4;
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dec %ecx / --a_len
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jnz L10 / jmp if a_len != 0
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L11:
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cmp $0,%ebx / is carry zero?
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jz L14
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mov 0(%edi),%eax / add in current word from *c
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add %ebx,%eax
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stosl / [es:edi] = ax; edi += 4;
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jnc L14
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L12:
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mov 0(%edi),%eax / add in current word from *c
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adc $0,%eax
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stosl / [es:edi] = ax; edi += 4;
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jc L12
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L14:
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pop %ebx
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pop %esi
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pop %edi
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leave
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ret
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nop
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/
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/ Divide 64-bit (Nhi,Nlo) by 32-bit divisor, which must be normalized
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/ so its high bit is 1. This code is from NSPR.
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/
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/ mp_err s_mpv_div_2dx1d(mp_digit Nhi, mp_digit Nlo, mp_digit divisor,
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/ mp_digit *qp, mp_digit *rp)
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/ esp + 0: Caller's ebx
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/ esp + 4: return address
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/ esp + 8: Nhi argument
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/ esp + 12: Nlo argument
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/ esp + 16: divisor argument
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/ esp + 20: qp argument
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/ esp + 24: rp argument
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/ registers:
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/ eax:
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/ ebx: carry
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/ ecx: a_len
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/ edx:
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/ esi: a ptr
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/ edi: c ptr
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/
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.globl s_mpv_div_2dx1d
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.type s_mpv_div_2dx1d,@function
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s_mpv_div_2dx1d:
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push %ebx
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mov 8(%esp),%edx
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mov 12(%esp),%eax
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mov 16(%esp),%ebx
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div %ebx
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mov 20(%esp),%ebx
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mov %eax,0(%ebx)
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mov 24(%esp),%ebx
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mov %edx,0(%ebx)
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xor %eax,%eax / return zero
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pop %ebx
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ret
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nop
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