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ArmPkg/ArmSoftfloatLib: add missing entry points for RVCT

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The RVCT compiler may emit calls to the various __aeabi_c?cmp??
functions, which return their results via the CPU condition flags
C and Z. According to ARM doc IHI 0043D 'Run-time ABI for the ARM
architecture':

    The 3-way comparison functions c*cmple, c*cmpeq and c*rcmple return
    their results in the CPSR Z and C flags. C is clear only if the operands
    are ordered and the first operand is less than the second. Z is set only
    when the operands are ordered and equal.

Add implementations for the double and float variants of the above.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Leif Lindholm <leif.lindholm@linaro.org>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@19327 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Ard Biesheuvel
2015-12-17 16:29:23 +00:00
committed by abiesheuvel
parent 44d1d2a828
commit 0b5d7b6e2e
4 changed files with 94 additions and 1 deletions
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2
ArmPkg/Library/ArmSoftFloatLib/softfloat-for-gcc.h
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@@ -196,7 +196,7 @@
#define float128_gt __gttf2
#endif
#ifdef __ARM_EABI__
#if defined (__ARM_EABI__) || defined (__CC_ARM)
#ifdef __ARM_PCS_VFP
#include <arm/aeabi.h>
#endif