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ARM: Make hard-float tobit conversions match JIT backend behavior.

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Reported by Peter Cawley. #1253
This commit is contained in:
Mike Pall 2024-08-20 19:00:47 +02:00
parent ab39082fdd
commit 32a683d226
1 changed files with 12 additions and 1 deletions
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13
src/vm_arm.dasc
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@ -1863,9 +1863,19 @@ static void build_subroutines(BuildCtx *ctx)
|
|//-- Bit library --------------------------------------------------------
|
|// FP number to bit conversion for soft-float. Clobbers r0-r3.
|->vm_tobit_fb:
| bhi ->fff_fallback
|.if FPU
|// FP number to bit conversion for hard-float. Clobbers r0, d0-d1.
| vldr d1, >9
| vmov d0, CARG1, CARG2
| vadd.f64 d0, d0, d1
| vmov CARG1, s0
| bx lr
|9:
| .long 0, 0x43380000 // (double)(2^52 + 2^51).
|.else
|// FP number to bit conversion for soft-float. Clobbers r0-r3.
|->vm_tobit:
| lsl RB, CARG2, #1
| adds RB, RB, #0x00200000
@ -1890,6 +1900,7 @@ static void build_subroutines(BuildCtx *ctx)
| orr CARG1, CARG4, CARG1, lsl RB
| rsblt CARG1, CARG1, #0
| bx lr
|.endif
|
|.macro .ffunc_bit, name
| .ffunc_1 bit_..name