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2020-06-26softfloat: merge floatx80_mod and floatx80_remJoseph Myers1-1/+0
The m68k-specific softfloat code includes a function floatx80_mod that is extremely similar to floatx80_rem, but computing the remainder based on truncating the quotient toward zero rather than rounding it to nearest integer. This is also useful for emulating the x87 fprem and fprem1 instructions. Change the floatx80_rem implementation into floatx80_modrem that can perform either operation, with both floatx80_rem and floatx80_mod as thin wrappers available for all targets. There does not appear to be any use for the _mod operation for other floating-point formats in QEMU (the only other architectures using _rem at all are linux-user/arm/nwfpe, for FPA emulation, and openrisc, for instructions that have been removed in the latest version of the architecture), so no change is made to the code for other formats. Signed-off-by: Joseph Myers <joseph@codesourcery.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <alpine.DEB.2.21.2006081654280.23637@digraph.polyomino.org.uk> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-06-26m68k comments break patch submission due to being incorrectly formattedLucien Murray-Pitts1-1/+2
Altering all comments in target/m68k to match Qemu coding styles so that future patches wont fail due to style breaches. Signed-off-by: Lucien Murray-Pitts <lucienmp.qemu@gmail.com> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20190606234125.GA4830@localhost.localdomain> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2018-03-13target/m68k: implement fcoshLaurent Vivier1-0/+1
Using a local m68k floatx80_cosh() [copied from previous: Written by Andreas Grabher for Previous, NeXT Computer Emulator.] Signed-off-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20180312202728.23790-12-laurent@vivier.eu>
2018-03-13target/m68k: implement fsinhLaurent Vivier1-0/+1
Using a local m68k floatx80_sinh() [copied from previous: Written by Andreas Grabher for Previous, NeXT Computer Emulator.] Signed-off-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20180312202728.23790-11-laurent@vivier.eu>
2018-03-13target/m68k: implement ftanhLaurent Vivier1-0/+2
Using local m68k floatx80_tanh() and floatx80_etoxm1() [copied from previous: Written by Andreas Grabher for Previous, NeXT Computer Emulator.] Signed-off-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20180312202728.23790-10-laurent@vivier.eu>
2018-03-13target/m68k: implement fatanhLaurent Vivier1-0/+1
Using a local m68k floatx80_atanh() [copied from previous: Written by Andreas Grabher for Previous, NeXT Computer Emulator.] Signed-off-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20180312202728.23790-9-laurent@vivier.eu>
2018-03-13target/m68k: implement facosLaurent Vivier1-0/+1
Using a local m68k floatx80_acos() [copied from previous: Written by Andreas Grabher for Previous, NeXT Computer Emulator.] Signed-off-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20180312202728.23790-8-laurent@vivier.eu>
2018-03-13target/m68k: implement fasinLaurent Vivier1-0/+1
Using a local m68k floatx80_asin() [copied from previous: Written by Andreas Grabher for Previous, NeXT Computer Emulator.] Signed-off-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20180312202728.23790-7-laurent@vivier.eu>
2018-03-13target/m68k: implement fatanLaurent Vivier1-0/+1
Using a local m68k floatx80_atan() [copied from previous: Written by Andreas Grabher for Previous, NeXT Computer Emulator.] Signed-off-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20180312202728.23790-6-laurent@vivier.eu>
2018-03-13target/m68k: implement fcosLaurent Vivier1-0/+1
Using a local m68k floatx80_cos() [copied from previous: Written by Andreas Grabher for Previous, NeXT Computer Emulator.] Signed-off-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20180312202728.23790-4-laurent@vivier.eu>
2018-03-13target/m68k: implement fsinLaurent Vivier1-0/+1
Using a local m68k floatx80_sin() [copied from previous: Written by Andreas Grabher for Previous, NeXT Computer Emulator.] Signed-off-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20180312202728.23790-3-laurent@vivier.eu>
2018-03-13target/m68k: implement ftanLaurent Vivier1-0/+1
Using a local m68k floatx80_tan() [copied from previous: Written by Andreas Grabher for Previous, NeXT Computer Emulator.] Signed-off-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20180312202728.23790-2-laurent@vivier.eu>
2018-03-09target/m68k: implement ftentoxLaurent Vivier1-0/+1
Using a local m68k floatx80_tentox() [copied from previous: Written by Andreas Grabher for Previous, NeXT Computer Emulator.] Signed-off-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20180305203910.10391-9-laurent@vivier.eu>
2018-03-09target/m68k: implement ftwotoxLaurent Vivier1-0/+1
Using a local m68k floatx80_twotox() [copied from previous: Written by Andreas Grabher for Previous, NeXT Computer Emulator.] Signed-off-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20180305203910.10391-8-laurent@vivier.eu>
2018-03-09target/m68k: implement fetoxLaurent Vivier1-0/+1
Using a local m68k floatx80_etox() [copied from previous: Written by Andreas Grabher for Previous, NeXT Computer Emulator.] Signed-off-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20180305203910.10391-7-laurent@vivier.eu>
2018-03-09target/m68k: implement flog2Laurent Vivier1-0/+1
Using a local m68k floatx80_log2() [copied from previous: Written by Andreas Grabher for Previous, NeXT Computer Emulator.] Signed-off-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20180305203910.10391-6-laurent@vivier.eu>
2018-03-09target/m68k: implement flog10Laurent Vivier1-0/+1
Using a local m68k floatx80_log10() [copied from previous: Written by Andreas Grabher for Previous, NeXT Computer Emulator.] Signed-off-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20180305203910.10391-5-laurent@vivier.eu>
2018-03-09target/m68k: implement flognLaurent Vivier1-0/+1
Using a local m68k floatx80_logn() [copied from previous: Written by Andreas Grabher for Previous, NeXT Computer Emulator.] Signed-off-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20180305203910.10391-4-laurent@vivier.eu>
2018-03-09target/m68k: implement flognp1Laurent Vivier1-0/+1
Using a local m68k floatx80_lognp1() [copied from previous: Written by Andreas Grabher for Previous, NeXT Computer Emulator.] Signed-off-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20180305203910.10391-3-laurent@vivier.eu>
2018-03-09target/m68k: define floatx80_move()Laurent Vivier1-0/+1
This functions is needed by upcoming m68k softfloat functions. Source code copied for WinUAE (tag 3500) (The WinUAE file has been copied from QEMU and has the QEMU licensing notice) Signed-off-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20180305203910.10391-2-laurent@vivier.eu>
2018-03-04target/m68k: add fscale, fgetman and fgetexpLaurent Vivier1-0/+3
Using local m68k floatx80_getman(), floatx80_getexp(), floatx80_scale() [copied from previous: Written by Andreas Grabher for Previous, NeXT Computer Emulator.] Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20180224201802.911-5-laurent@vivier.eu>
2018-03-04target/m68k: add fmod/fremLaurent Vivier1-0/+26
Using a local m68k floatx80_mod() [copied from previous: Written by Andreas Grabher for Previous, NeXT Computer Emulator.] The quotient byte of the FPSR is updated with the result of the operation. Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20180224201802.911-3-laurent@vivier.eu>
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