mirror of https://github.com/acidanthera/audk.git
304 lines
8.0 KiB
ArmAsm
304 lines
8.0 KiB
ArmAsm
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#------------------------------------------------------------------------------
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#
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# Copyright (c) 2006, Intel Corporation
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# All rights reserved. This program and the accompanying materials
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# are licensed and made available under the terms and conditions of the BSD License
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# which accompanies this distribution. The full text of the license may be found at
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# http://opensource.org/licenses/bsd-license.php
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#
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# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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#
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# Module Name:
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#
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# Ia32math.S
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#
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# Abstract:
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#
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# Generic math routines for EBC interpreter running on IA32 processor
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#
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#------------------------------------------------------------------------------
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.global _LeftShiftU64
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_LeftShiftU64:
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push %ebp
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mov %esp,%ebp
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push %ecx
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cmpl $0x0,0x14(%ebp)
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jne _LeftShiftU64+0x12
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mov 0x10(%ebp),%ecx
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cmp $0x3f,%ecx
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jbe _LeftShiftU64+0x18
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xor %eax,%eax
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xor %edx,%edx
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jmp _LeftShiftU64+0x2c
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mov 0x8(%ebp),%eax
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mov 0xc(%ebp),%edx
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shld %cl,%eax,%edx
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shl %cl,%eax
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cmp $0x20,%ecx
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jb _LeftShiftU64+0x2c
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mov %eax,%edx
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xor %eax,%eax
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pop %ecx
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leave
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ret
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.global _RightShiftU64
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_RightShiftU64:
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push %ebp
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mov %esp,%ebp
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push %ecx
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cmpl $0x0,0x14(%ebp)
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jne _RightShiftU64+0x12
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mov 0x10(%ebp),%ecx
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cmp $0x3f,%ecx
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jbe _RightShiftU64+0x18
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xor %eax,%eax
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xor %edx,%edx
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jmp _RightShiftU64+0x2c
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mov 0x8(%ebp),%eax
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mov 0xc(%ebp),%edx
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shrd %cl,%edx,%eax
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shr %cl,%edx
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cmp $0x20,%ecx
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jb _RightShiftU64+0x2c
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mov %edx,%eax
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xor %edx,%edx
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pop %ecx
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leave
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ret
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.global _ARightShift64
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_ARightShift64:
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push %ebp
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mov %esp,%ebp
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push %ecx
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cmpl $0x0,0x14(%ebp)
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jne _ARightShift64+0x12
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mov 0x10(%ebp),%ecx
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cmp $0x3f,%ecx
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jbe _ARightShift64+0x27
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btl $0x1f,0xc(%ebp)
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jae _ARightShift64+0x21
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or $0xffffffff,%eax
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or $0xffffffff,%edx
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jmp _ARightShift64+0x3c
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xor %eax,%eax
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xor %edx,%edx
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jmp _ARightShift64+0x3c
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mov 0x8(%ebp),%eax
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mov 0xc(%ebp),%edx
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shrd %cl,%edx,%eax
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sar %cl,%edx
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cmp $0x20,%ecx
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jb _ARightShift64+0x3c
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mov %edx,%eax
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sar $0x1f,%edx
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pop %ecx
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leave
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ret
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.global _MulU64x64
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_MulU64x64:
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push %ebp
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mov %esp,%ebp
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push %ebx
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push %ecx
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mov 0x18(%ebp),%ebx
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mov 0x8(%ebp),%eax
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mull 0x10(%ebp)
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push %eax
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mov %edx,%ecx
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mov 0xc(%ebp),%eax
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mull 0x10(%ebp)
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add %eax,%ecx
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adc $0x0,%edx
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mov %edx,(%ebx)
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mov 0x8(%ebp),%eax
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mull 0x14(%ebp)
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add %eax,%ecx
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push %ecx
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adc $0x0,%edx
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mov %edx,%ecx
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mov 0xc(%ebp),%eax
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mull 0x14(%ebp)
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add %eax,%ecx
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adc $0x0,%edx
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add %ecx,(%ebx)
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adc $0x0,%edx
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mov %edx,0x4(%ebx)
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pop %edx
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pop %eax
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pop %ecx
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pop %ebx
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leave
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ret
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.global _MulS64x64
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_MulS64x64:
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push %ebp
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mov %esp,%ebp
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push %ebx
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push %ecx
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mov 0x18(%ebp),%ebx
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xor %ecx,%ecx
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mov 0xc(%ebp),%edx
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bt $0x1f,%edx
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jae _MulS64x64+0x2a
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mov 0x8(%ebp),%eax
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not %edx
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not %eax
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add $0x1,%eax
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adc $0x0,%edx
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mov %eax,0x8(%ebp)
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mov %edx,0xc(%ebp)
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btc $0x0,%ecx
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mov 0x14(%ebp),%edx
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bt $0x1f,%edx
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jae _MulS64x64+0x4a
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mov 0x10(%ebp),%eax
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not %edx
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not %eax
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add $0x1,%eax
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adc $0x0,%edx
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mov %eax,0x10(%ebp)
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mov %edx,0x14(%ebp)
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btc $0x0,%ecx
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pushl 0x18(%ebp)
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pushl 0x14(%ebp)
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pushl 0x10(%ebp)
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pushl 0xc(%ebp)
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pushl 0x8(%ebp)
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call _MulU64x64
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add $0x14,%esp
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bt $0x0,%ecx
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jae _MulS64x64+0x7d
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not %eax
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not %edx
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notl (%ebx)
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notl 0x4(%ebx)
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add $0x1,%eax
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adc $0x0,%edx
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adcl $0x0,(%ebx)
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adcl $0x0,0x4(%ebx)
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pop %ecx
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pop %ebx
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leave
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ret
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.global _DivU64x64
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_DivU64x64:
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push %ebp
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mov %esp,%ebp
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push %ecx
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mov 0x1c(%ebp),%eax
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movl $0x0,(%eax)
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cmpl $0x0,0x10(%ebp)
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jne _DivU64x64+0x3e
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cmpl $0x0,0x14(%ebp)
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jne _DivU64x64+0x3e
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movl $0x1,(%eax)
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cmpl $0x0,0x18(%ebp)
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je _DivU64x64+0x35
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mov 0x18(%ebp),%eax
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movl $0x0,(%eax)
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movl $0x80000000,0x4(%eax)
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xor %eax,%eax
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mov $0x80000000,%edx
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jmp _DivU64x64+0x7e
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xor %edx,%edx
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xor %eax,%eax
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mov $0x40,%ecx
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shll 0x8(%ebp)
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rcll 0xc(%ebp)
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rcl %eax
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rcl %edx
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cmp 0x14(%ebp),%edx
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ja _DivU64x64+0x5d
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jb _DivU64x64+0x68
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cmp 0x10(%ebp),%eax
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jb _DivU64x64+0x68
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btsl $0x0,0x8(%ebp)
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sub 0x10(%ebp),%eax
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sbb 0x14(%ebp),%edx
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loop _DivU64x64+0x47
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cmpl $0x0,0x18(%ebp)
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je _DivU64x64+0x78
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mov 0x18(%ebp),%ecx
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mov %eax,(%ecx)
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mov %edx,0x4(%ecx)
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mov 0x8(%ebp),%eax
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mov 0xc(%ebp),%edx
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pop %ecx
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leave
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ret
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.global _DivS64x64
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_DivS64x64:
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push %ebp
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mov %esp,%ebp
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push %ecx
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mov 0x1c(%ebp),%eax
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movl $0x0,(%eax)
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cmpl $0x0,0x10(%ebp)
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jne _DivS64x64+0x41
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cmpl $0x0,0x14(%ebp)
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jne _DivS64x64+0x41
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movl $0x1,(%eax)
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cmpl $0x0,0x18(%ebp)
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je _DivS64x64+0x35
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mov 0x18(%ebp),%eax
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movl $0x0,(%eax)
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movl $0x80000000,0x4(%eax)
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xor %eax,%eax
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mov $0x80000000,%edx
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jmp _DivS64x64+0xc6
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xor %ecx,%ecx
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mov 0xc(%ebp),%edx
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bt $0x1f,%edx
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jae _DivS64x64+0x67
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mov 0x8(%ebp),%eax
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not %edx
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not %eax
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add $0x1,%eax
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adc $0x0,%edx
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mov %eax,0x8(%ebp)
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mov %edx,0xc(%ebp)
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btc $0x0,%ecx
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btc $0x1,%ecx
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mov 0x14(%ebp),%edx
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bt $0x1f,%edx
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jae _DivS64x64+0x87
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mov 0x10(%ebp),%eax
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not %edx
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not %eax
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add $0x1,%eax
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adc $0x0,%edx
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mov %eax,0x10(%ebp)
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mov %edx,0x14(%ebp)
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btc $0x0,%ecx
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pushl 0x1c(%ebp)
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pushl 0x18(%ebp)
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pushl 0x14(%ebp)
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pushl 0x10(%ebp)
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pushl 0xc(%ebp)
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pushl 0x8(%ebp)
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call _DivU64x64
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add $0x18,%esp
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bt $0x0,%ecx
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jae _DivS64x64+0xb1
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not %eax
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not %edx
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add $0x1,%eax
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adc $0x0,%edx
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bt $0x1,%ecx
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jae _DivS64x64+0xc6
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mov 0x18(%ebp),%ecx
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notl (%ecx)
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notl 0x4(%ecx)
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addl $0x1,(%ecx)
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adcl $0x0,0x4(%ecx)
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pop %ecx
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leave
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ret
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