Zack Buhman
3209054b8f
Some SH4 floating point instructions have ambiguous encodings that
depend on the state of FPSCR bits. Exhaustively, these are:
FMOV XDm,DRn (sz 1)
FMOV FRm,FRn (sz 0)
FMOV DRm,@(R0,Rn) (sz 1)
FMOV.S FRm,@(R0,Rn) (sz 0)
FCMP/EQ DRm,DRn (pr 1)
FCMP/EQ FRm,FRn (pr 0)
FMOV @Rm+,XDn (sz 1)
FMOV.S @Rm+,FRn (sz 0)
FMOV XDm,@(R0,Rn) (sz 1)
FMOV.S FRm,@(R0,Rn) (sz 0)
FMUL DRm,DRn (pr 1)
FMUL FRm,FRn (pr 0)
FMOV.S @Rm+,FRn (sz 0)
FMOV @Rm+,DRn (sz 1)
FLOAT FPUL,DRn (pr 1)
FLOAT FPUL,FRn (pr 0)
FNEG DRn (pr 1)
FNEG FRn (pr 0)
FTRC DRm,FPUL (pr 1)
FTRC FRm,FPUL (pr 0)
FMOV.S @(R0,Rm),FRn (sz 0)
FMOV @(R0,Rm),DRn (sz 1)
FMOV.S @Rm,FRn (sz 0)
FMOV @Rm,DRn (sz 1)
FMOV XDm,XDn (sz 1)
FMOV FRm,FRn (sz 0)
FABS FRn (pr 0)
FABS DRn (pr 1)
FMOV.S FRm,@Rn (sz 0)
FMOV DRm,@Rn (sz 1)
FSUB DRm,DRn (pr 1)
FSUB FRm,FRn (pr 0)
FDIV DRm,DRn (pr 1)
FDIV FRm,FRn (pr 0)
FCMP/GT DRm,DRn (pr 1)
FCMP/GT FRm,FRn (pr 0)
FMOV DRm,DRn (sz 1)
FMOV FRm,FRn (sz 0)
FMOV.S FRm,@-Rn (sz 0)
FMOV DRm,@-Rn (sz 1)
FADD DRm,DRn (pr 1)
FADD FRm,FRn (pr 0)
FMOV.S FRm,@Rn (sz 0)
FMOV XDm,@Rn (sz 1)
FMOV.S @(R0,Rm),FRn (sz 0)
FMOV @(R0,Rm),XDn (sz 1)
FMOV DRm,XDn (sz 1)
FMOV FRm,FRn (sz 0)
FMOV XDm,@-Rn (sz 1)
FMOV.S FRm,@-Rn (sz 0)
FSQRT DRn (pr 1)
FSQRT FRn (pr 0)
FMOV.S @Rm,FRn (sz 0)
FMOV @Rm,XDn (sz 1)
This commit automatically calculates which FPU instructions require
FPSCR-discrimination, and automatically inserts the appropriate
conditional logic in the instruction decoder.
48 lines
811 B
Makefile
48 lines
811 B
Makefile
DEBUG = -g -gdwarf-4
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AFLAGS += --fatal-warnings
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CFLAGS += -falign-functions=4 -ffunction-sections -fdata-sections -fshort-enums
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CFLAGS += -Wall -Werror -Wfatal-errors -Wno-dangling-else
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CFLAGS += -std=c2x
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DEPFLAGS = -MMD -MP
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SOFTFLOAT ?= ../../SoftFloat-3e
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SOFTFLOAT_A ?= $(SOFTFLOAT)/build/Linux-x86_64-GCC/softfloat.a
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SOFTFLOAT_I ?= $(SOFTFLOAT)/source/include
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CFLAGS += -I$(SOFTFLOAT_I)
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CC = $(TARGET)gcc
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OBJS = \
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decode_execute.o \
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decode_print.o \
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exception.o \
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execute.o \
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impl.o \
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main.o \
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ram.o \
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$(SOFTFLOAT_A)
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all: main
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%.o: %.c
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$(CC) $(CARCH) $(CFLAGS) $(OPT) $(DEBUG) $(DEPFLAGS) -MF ${<}.d -c $< -o $@
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main: $(OBJS)
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$(CC) $^ -o $@
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-include $(shell find -type f -name '*.d')
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.SUFFIXES:
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.INTERMEDIATE:
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.SECONDARY:
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.PHONY: all clean
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%: RCS/%,v
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%: RCS/%
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%: %,v
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%: s.%
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%: SCCS/s.%
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