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-rw-r--r--security/nss/lib/freebl/mpi/mpi_i86pc.s313
1 files changed, 313 insertions, 0 deletions
diff --git a/security/nss/lib/freebl/mpi/mpi_i86pc.s b/security/nss/lib/freebl/mpi/mpi_i86pc.s
new file mode 100644
index 000000000..f80039659
--- /dev/null
+++ b/security/nss/lib/freebl/mpi/mpi_i86pc.s
@@ -0,0 +1,313 @@
+/
+/ This Source Code Form is subject to the terms of the Mozilla Public
+/ License, v. 2.0. If a copy of the MPL was not distributed with this
+/ file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+.text
+
+ / ebp - 36: caller's esi
+ / ebp - 32: caller's edi
+ / ebp - 28:
+ / ebp - 24:
+ / ebp - 20:
+ / ebp - 16:
+ / ebp - 12:
+ / ebp - 8:
+ / ebp - 4:
+ / ebp + 0: caller's ebp
+ / ebp + 4: return address
+ / ebp + 8: a argument
+ / ebp + 12: a_len argument
+ / ebp + 16: b argument
+ / ebp + 20: c argument
+ / registers:
+ / eax:
+ / ebx: carry
+ / ecx: a_len
+ / edx:
+ / esi: a ptr
+ / edi: c ptr
+.globl s_mpv_mul_d
+.type s_mpv_mul_d,@function
+s_mpv_mul_d:
+ push %ebp
+ mov %esp,%ebp
+ sub $28,%esp
+ push %edi
+ push %esi
+ push %ebx
+ movl $0,%ebx / carry = 0
+ mov 12(%ebp),%ecx / ecx = a_len
+ mov 20(%ebp),%edi
+ cmp $0,%ecx
+ je L2 / jmp if a_len == 0
+ mov 8(%ebp),%esi / esi = a
+ cld
+L1:
+ lodsl / eax = [ds:esi]; esi += 4
+ mov 16(%ebp),%edx / edx = b
+ mull %edx / edx:eax = Phi:Plo = a_i * b
+
+ add %ebx,%eax / add carry (%ebx) to edx:eax
+ adc $0,%edx
+ mov %edx,%ebx / high half of product becomes next carry
+
+ stosl / [es:edi] = ax; edi += 4;
+ dec %ecx / --a_len
+ jnz L1 / jmp if a_len != 0
+L2:
+ mov %ebx,0(%edi) / *c = carry
+ pop %ebx
+ pop %esi
+ pop %edi
+ leave
+ ret
+ nop
+
+ / ebp - 36: caller's esi
+ / ebp - 32: caller's edi
+ / ebp - 28:
+ / ebp - 24:
+ / ebp - 20:
+ / ebp - 16:
+ / ebp - 12:
+ / ebp - 8:
+ / ebp - 4:
+ / ebp + 0: caller's ebp
+ / ebp + 4: return address
+ / ebp + 8: a argument
+ / ebp + 12: a_len argument
+ / ebp + 16: b argument
+ / ebp + 20: c argument
+ / registers:
+ / eax:
+ / ebx: carry
+ / ecx: a_len
+ / edx:
+ / esi: a ptr
+ / edi: c ptr
+.globl s_mpv_mul_d_add
+.type s_mpv_mul_d_add,@function
+s_mpv_mul_d_add:
+ push %ebp
+ mov %esp,%ebp
+ sub $28,%esp
+ push %edi
+ push %esi
+ push %ebx
+ movl $0,%ebx / carry = 0
+ mov 12(%ebp),%ecx / ecx = a_len
+ mov 20(%ebp),%edi
+ cmp $0,%ecx
+ je L4 / jmp if a_len == 0
+ mov 8(%ebp),%esi / esi = a
+ cld
+L3:
+ lodsl / eax = [ds:esi]; esi += 4
+ mov 16(%ebp),%edx / edx = b
+ mull %edx / edx:eax = Phi:Plo = a_i * b
+
+ add %ebx,%eax / add carry (%ebx) to edx:eax
+ adc $0,%edx
+ mov 0(%edi),%ebx / add in current word from *c
+ add %ebx,%eax
+ adc $0,%edx
+ mov %edx,%ebx / high half of product becomes next carry
+
+ stosl / [es:edi] = ax; edi += 4;
+ dec %ecx / --a_len
+ jnz L3 / jmp if a_len != 0
+L4:
+ mov %ebx,0(%edi) / *c = carry
+ pop %ebx
+ pop %esi
+ pop %edi
+ leave
+ ret
+ nop
+
+ / ebp - 36: caller's esi
+ / ebp - 32: caller's edi
+ / ebp - 28:
+ / ebp - 24:
+ / ebp - 20:
+ / ebp - 16:
+ / ebp - 12:
+ / ebp - 8:
+ / ebp - 4:
+ / ebp + 0: caller's ebp
+ / ebp + 4: return address
+ / ebp + 8: a argument
+ / ebp + 12: a_len argument
+ / ebp + 16: b argument
+ / ebp + 20: c argument
+ / registers:
+ / eax:
+ / ebx: carry
+ / ecx: a_len
+ / edx:
+ / esi: a ptr
+ / edi: c ptr
+.globl s_mpv_mul_d_add_prop
+.type s_mpv_mul_d_add_prop,@function
+s_mpv_mul_d_add_prop:
+ push %ebp
+ mov %esp,%ebp
+ sub $28,%esp
+ push %edi
+ push %esi
+ push %ebx
+ movl $0,%ebx / carry = 0
+ mov 12(%ebp),%ecx / ecx = a_len
+ mov 20(%ebp),%edi
+ cmp $0,%ecx
+ je L6 / jmp if a_len == 0
+ cld
+ mov 8(%ebp),%esi / esi = a
+L5:
+ lodsl / eax = [ds:esi]; esi += 4
+ mov 16(%ebp),%edx / edx = b
+ mull %edx / edx:eax = Phi:Plo = a_i * b
+
+ add %ebx,%eax / add carry (%ebx) to edx:eax
+ adc $0,%edx
+ mov 0(%edi),%ebx / add in current word from *c
+ add %ebx,%eax
+ adc $0,%edx
+ mov %edx,%ebx / high half of product becomes next carry
+
+ stosl / [es:edi] = ax; edi += 4;
+ dec %ecx / --a_len
+ jnz L5 / jmp if a_len != 0
+L6:
+ cmp $0,%ebx / is carry zero?
+ jz L8
+ mov 0(%edi),%eax / add in current word from *c
+ add %ebx,%eax
+ stosl / [es:edi] = ax; edi += 4;
+ jnc L8
+L7:
+ mov 0(%edi),%eax / add in current word from *c
+ adc $0,%eax
+ stosl / [es:edi] = ax; edi += 4;
+ jc L7
+L8:
+ pop %ebx
+ pop %esi
+ pop %edi
+ leave
+ ret
+ nop
+
+ / ebp - 20: caller's esi
+ / ebp - 16: caller's edi
+ / ebp - 12:
+ / ebp - 8: carry
+ / ebp - 4: a_len local
+ / ebp + 0: caller's ebp
+ / ebp + 4: return address
+ / ebp + 8: pa argument
+ / ebp + 12: a_len argument
+ / ebp + 16: ps argument
+ / ebp + 20:
+ / registers:
+ / eax:
+ / ebx: carry
+ / ecx: a_len
+ / edx:
+ / esi: a ptr
+ / edi: c ptr
+
+.globl s_mpv_sqr_add_prop
+.type s_mpv_sqr_add_prop,@function
+s_mpv_sqr_add_prop:
+ push %ebp
+ mov %esp,%ebp
+ sub $12,%esp
+ push %edi
+ push %esi
+ push %ebx
+ movl $0,%ebx / carry = 0
+ mov 12(%ebp),%ecx / a_len
+ mov 16(%ebp),%edi / edi = ps
+ cmp $0,%ecx
+ je L11 / jump if a_len == 0
+ cld
+ mov 8(%ebp),%esi / esi = pa
+L10:
+ lodsl / %eax = [ds:si]; si += 4;
+ mull %eax
+
+ add %ebx,%eax / add "carry"
+ adc $0,%edx
+ mov 0(%edi),%ebx
+ add %ebx,%eax / add low word from result
+ mov 4(%edi),%ebx
+ stosl / [es:di] = %eax; di += 4;
+ adc %ebx,%edx / add high word from result
+ movl $0,%ebx
+ mov %edx,%eax
+ adc $0,%ebx
+ stosl / [es:di] = %eax; di += 4;
+ dec %ecx / --a_len
+ jnz L10 / jmp if a_len != 0
+L11:
+ cmp $0,%ebx / is carry zero?
+ jz L14
+ mov 0(%edi),%eax / add in current word from *c
+ add %ebx,%eax
+ stosl / [es:edi] = ax; edi += 4;
+ jnc L14
+L12:
+ mov 0(%edi),%eax / add in current word from *c
+ adc $0,%eax
+ stosl / [es:edi] = ax; edi += 4;
+ jc L12
+L14:
+ pop %ebx
+ pop %esi
+ pop %edi
+ leave
+ ret
+ nop
+
+ /
+ / Divide 64-bit (Nhi,Nlo) by 32-bit divisor, which must be normalized
+ / so its high bit is 1. This code is from NSPR.
+ /
+ / mp_err s_mpv_div_2dx1d(mp_digit Nhi, mp_digit Nlo, mp_digit divisor,
+ / mp_digit *qp, mp_digit *rp)
+
+ / esp + 0: Caller's ebx
+ / esp + 4: return address
+ / esp + 8: Nhi argument
+ / esp + 12: Nlo argument
+ / esp + 16: divisor argument
+ / esp + 20: qp argument
+ / esp + 24: rp argument
+ / registers:
+ / eax:
+ / ebx: carry
+ / ecx: a_len
+ / edx:
+ / esi: a ptr
+ / edi: c ptr
+ /
+
+.globl s_mpv_div_2dx1d
+.type s_mpv_div_2dx1d,@function
+s_mpv_div_2dx1d:
+ push %ebx
+ mov 8(%esp),%edx
+ mov 12(%esp),%eax
+ mov 16(%esp),%ebx
+ div %ebx
+ mov 20(%esp),%ebx
+ mov %eax,0(%ebx)
+ mov 24(%esp),%ebx
+ mov %edx,0(%ebx)
+ xor %eax,%eax / return zero
+ pop %ebx
+ ret
+ nop
+
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