CODEWITHSUNDEEP
fpulibgcc
user3674043
user3674043

Reputation: 1

Libgcc Soft floating point functions

I want to find source code implementation of these functions based on soft floating point

__aeabi_dcmpeq

__aeabi_dcmplt

__aeabi_dmul

Basically, I want to to use soft floating point implementation of libgcc as my processor based on Cortex-M4 does not have FPU. Instead of using built in library libgcc.a using -lgcc switch, I want to use the source code implementation of floating point arithmetic functions in my application and want to use only those functions that are required for my application instead of adding whole of the library. So please can any one help where these functions are lying. I see these functions are there in "ieee754-df.S" such as "aeabi_dcmpeq". Are these functions meant for Soft floating point and generic for all ARM targets? but it seems me this is not the case.

Upvotes: 0

Views: 1131

Answers (1)

osgx
osgx

Reputation: 94445

The functions are defined in libgcc in https://gcc.gnu.org/git/gitweb.cgi?p=gcc.git;a=blob;f=libgcc/config/arm/ieee754-df.S

There is softfloat implementation in NetBSD (NetBSD/src/lib/libc/softfloat/):

http://cvsweb.netbsd.org/bsdweb.cgi/src/lib/libc/arch/arm/softfloat/

http://cvsweb.netbsd.org/bsdweb.cgi/~checkout~/src/lib/libc/arch/arm/softfloat/__aeabi_dcmplt.c

Upvotes: 0

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