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This patch implements conversions between _Float128 and the 3 Decimal floating types. It does this by extendending the dfp-bit conversions to add a new binary floating point type (KF), and doing the conversions in the same manner as the other binary/decimal conversions. For conversions from _Float128 to Decimal, this patch uses a function (__sprintfkf) instead of the sprintf function to convert long double values to strings. The __sprintfkf function determines if GLIBC 2.32 or newer is used and calls the IEEE 128-bit version of sprintf (__sprintfieee128). If the GLIBC is earlier than 2.32, the code will convert _Float128 to __ibm128 and then use the normal sprintf to convert this value. For conversions from Decimal to _Float128, this patch uses a function (__strtokf) instead of strtold to convert the strings from the Decimal conversion to long double. The __strtokf function determines if GLIBC 2.32 or newer is used, and if it is, calls the IEEE 128-bit version (__strtoieee128). If the GLIBC is earlier than 2.32, the code will call strtold and convert the __ibm128 value to _Float128. These functions will primarily be used if/when the default PowerPC long double type is changed to IEEE 128-bit, but they could also be used if the user explicitly converts _Float128 to/from a Decimal type. libgcc/ 2021-02-22 Michael Meissner <meissner@linux.ibm.com> * config/rs6000/_dd_to_kf.c: New file. * config/rs6000/_kf_to_dd.c: New file. * config/rs6000/_kf_to_sd.c: New file. * config/rs6000/_kf_to_td.c: New file. * config/rs6000/_sd_to_kf.c: New file. * config/rs6000/_sprintfkf.c: New file. * config/rs6000/_sprintfkf.h: New file. * config/rs6000/_strtokf.h: New file. * config/rs6000/_strtokf.c: New file. * config/rs6000/_td_to_kf.c: New file. * config/rs6000/quad-float128.h: Add new declarations. * config/rs6000/t-float128 (fp128_dec_funcs): New macro. (fp128_decstr_funcs): New macro. (ibm128_dec_funcs): New macro. (fp128_ppc_funcs): Add the new conversions. (fp128_dec_objs): Force Decimal <-> __float128 conversions to be compiled with -mabi=ieeelongdouble. (fp128_decstr_objs): Force __float128 <-> string conversions to be compiled with -mabi=ibmlongdouble. (ibm128_dec_objs): Force Decimal <-> __float128 conversions to be compiled with -mabi=ieeelongdouble. (FP128_CFLAGS_DECIMAL): New macro. (IBM128_CFLAGS_DECIMAL): New macro. * dfp-bit.c (DFP_TO_BFP): Add PowerPC _Float128 support. (BFP_TO_DFP): Add PowerPC _Float128 support. * dfp-bit.h (BFP_KIND): Add new binary floating point kind for IEEE 128-bit floating point. (DFP_TO_BFP): Add PowerPC _Float128 support. (BFP_TO_DFP): Add PowerPC _Float128 support. (BFP_SPRINTF): New macro. |
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| .. | ||
| config | ||
| soft-fp | ||
| ChangeLog | ||
| config.host | ||
| config.in | ||
| configure | ||
| configure.ac | ||
| crtstuff.c | ||
| dfp-bit.c | ||
| dfp-bit.h | ||
| divmod.c | ||
| emutls.c | ||
| enable-execute-stack-empty.c | ||
| enable-execute-stack-mprotect.c | ||
| find-symver.awk | ||
| fixed-bit.c | ||
| fixed-bit.h | ||
| fixed-obj.mk | ||
| floatunsidf.c | ||
| floatunsisf.c | ||
| floatunsitf.c | ||
| floatunsixf.c | ||
| fp-bit.c | ||
| fp-bit.h | ||
| gbl-ctors.h | ||
| gcov.h | ||
| gen-fixed.sh | ||
| generic-morestack-thread.c | ||
| generic-morestack.c | ||
| generic-morestack.h | ||
| gstdint.h | ||
| gthr-posix.h | ||
| gthr-single.h | ||
| gthr.h | ||
| libgcc2.c | ||
| libgcc2.h | ||
| libgcc-std.ver.in | ||
| libgcov-driver-system.c | ||
| libgcov-driver.c | ||
| libgcov-interface.c | ||
| libgcov-merge.c | ||
| libgcov-profiler.c | ||
| libgcov-util.c | ||
| libgcov.h | ||
| Makefile.in | ||
| memcmp.c | ||
| memcpy.c | ||
| memmove.c | ||
| memset.c | ||
| mkheader.sh | ||
| mkmap-flat.awk | ||
| mkmap-symver.awk | ||
| offloadstuff.c | ||
| shared-object.mk | ||
| siditi-object.mk | ||
| static-object.mk | ||
| sync.c | ||
| udivhi3.c | ||
| udivmod.c | ||
| udivmodhi4.c | ||
| udivmodsi4.c | ||
| unwind-arm-common.inc | ||
| unwind-c.c | ||
| unwind-compat.c | ||
| unwind-compat.h | ||
| unwind-dw2-fde-compat.c | ||
| unwind-dw2-fde-dip.c | ||
| unwind-dw2-fde.c | ||
| unwind-dw2-fde.h | ||
| unwind-dw2.c | ||
| unwind-dw2.h | ||
| unwind-generic.h | ||
| unwind-pe.h | ||
| unwind-seh.c | ||
| unwind-sjlj.c | ||
| unwind.inc | ||
| vtv_end_preinit.c | ||
| vtv_end.c | ||
| vtv_start_preinit.c | ||
| vtv_start.c | ||