125 lines
2.4 KiB
ArmAsm
125 lines
2.4 KiB
ArmAsm
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/**
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* This file has no copyright assigned and is placed in the Public Domain.
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* This file is part of the mingw-w64 runtime package.
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* No warranty is given; refer to the file DISCLAIMER.PD within this package.
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*/
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#include <_mingw_mac.h>
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.file "ceil.S"
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.text
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.align 4
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.globl __MINGW_USYMBOL(ceil)
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.def __MINGW_USYMBOL(ceil); .scl 2; .type 32; .endef
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#ifdef __x86_64__
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.seh_proc __MINGW_USYMBOL(ceil)
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#endif
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__MINGW_USYMBOL(ceil):
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#if defined(_AMD64_) || defined(__x86_64__)
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.seh_endprologue
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movd %xmm0, %rax
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movq %rax, %rcx
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sarq $52, %rcx
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andl $2047, %ecx
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subl $1023, %ecx
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cmpl $51, %ecx
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jg .is_intnaninf
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/* Is x zero? */
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testq %rax, %rax
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je .ret_org
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/* Is x signed? */
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testl %ecx, %ecx
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js .signed_val
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/* Is x integral? */
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movabsq $4503599627370495, %rdx
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sarq %cl, %rdx
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testq %rax, %rdx
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je .ret_org
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addsd .huge(%rip), %xmm0
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ucomisd .zero(%rip), %xmm0
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jbe .doret
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testq %rax, %rax
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jle .l1
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/* inexact ... */
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movabsq $4503599627370496, %r8
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shrq %cl, %r8
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addq %r8, %rax
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.l1:
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notq %rdx
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andq %rdx, %rax
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.doret:
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movd %rax, %xmm0
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ret
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.p2align 4,,10
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.signed_val:
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addsd .huge(%rip), %xmm0
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ucomisd .zero(%rip), %xmm0
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jbe .doret2
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testq %rax, %rax
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movabsq $4607182418800017408, %rdx
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movabsq $-9223372036854775808, %rax
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cmovns %rdx, %rax
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.p2align 4,,10
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.doret2:
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movd %rax, %xmm0
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ret
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.p2align 4,,10
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.is_intnaninf:
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/* Is Nan or Inf? */
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cmpl $1024, %ecx
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je .ret_naninf
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.p2align 4,,10
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.ret_org:
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/* return x. */
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rep
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ret
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.p2align 4,,10
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.ret_naninf:
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/* return x + x; */
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addsd %xmm0, %xmm0
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ret
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.seh_endproc
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/* local data. */
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.section .rdata,"dr"
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.align 8
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.huge:
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.long -2013235812
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.long 2117592124
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.align 8
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.zero:
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.long 0
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.long 0
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#elif defined(_ARM_) || defined(__arm__)
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vmrs r1, fpscr
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bic r0, r1, #0x00c00000
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orr r0, r0, #0x00400000 /* Round towards Plus Infinity */
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vmsr fpscr, r0
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vcvtr.s32.f64 s0, d0
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vcvt.f64.s32 d0, s0
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vmsr fpscr, r1
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bx lr
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#elif defined(_X86_) || defined(__i386__)
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fldl 4(%esp)
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subl $8,%esp
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fstcw 4(%esp) /* store fpu control word */
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/* We use here %edx although only the low 1 bits are defined.
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But none of the operations should care and they are faster
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than the 16 bit operations. */
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movl $0x0800,%edx /* round towards +oo */
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orl 4(%esp),%edx
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andl $0xfbff,%edx
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movl %edx,(%esp)
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fldcw (%esp) /* load modified control word */
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frndint /* round */
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fldcw 4(%esp) /* restore original control word */
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addl $8,%esp
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ret
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#endif
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