forked from Imagelibrary/binutils-gdb
d0a7ca87ab
When building the erc32 simulator I get a few warnings like this:
/tmp/build/sim/../../src/sim/erc32/exec.c:1377:21: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
1377 | sregs->fs[rd] = *((float32 *) & ddata[0]);
| ~^~~~~~~~~~~~~~~~~~~~~~~
The type of '& ddata[0]' will be 'uint32_t *', which is what triggers
the warning.
This commit makes use of memcpy when performing the type-punning,
which resolves the above warnings.
With this change, I now see no warnings when compiling exec.c, which
means that the line in Makefile.in that disables -Werror can be
removed.
There should be no change in behaviour after this commit.
52 lines
1.8 KiB
Makefile
52 lines
1.8 KiB
Makefile
# Makefile template for Configure for the erc32sim library.
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# Copyright (C) 1993-2022 Free Software Foundation, Inc.
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# Written by Cygnus Support
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# Modified by J.Gaisler ESA/ESTEC
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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## COMMON_PRE_CONFIG_FRAG
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READLINE_SRC = $(srcroot)/readline/readline
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SIM_OBJS = exec.o erc32.o func.o help.o float.o interf.o
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SIM_RUN_OBJS = sis.o
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SIM_EXTRA_CFLAGS = $(READLINE_CFLAGS)
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SIM_EXTRA_LIBS = $(READLINE_LIB) $(TERMCAP_LIB) -lm
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SIM_EXTRA_INSTALL = install-sis
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SIM_EXTRA_CLEAN = clean-sis
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# UARTS run at about 115200 baud (simulator time). Add -DFAST_UART to
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# CFLAGS if faster (infinite) UART speed is desired. Might affect the
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# behaviour of UART interrupt routines ...
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SIM_EXTRA_CFLAGS += -DFAST_UART -I$(srcroot)
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## COMMON_POST_CONFIG_FRAG
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# `sis' doesn't need interf.o.
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SIS_OFILES = exec.o erc32.o func.o help.o float.o
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all: sis$(EXEEXT)
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sis$(EXEEXT): sis.o $(SIS_OFILES) libsim.a $(LIBDEPS)
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$(ECHO_CCLD) $(CC) $(ALL_CFLAGS) -o sis$(EXEEXT) \
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sis.o $(SIS_OFILES) libsim.a $(EXTRA_LIBS)
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# Copy the files into directories where they will be run.
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install-sis: installdirs
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n=`echo sis | sed '$(program_transform_name)'`; \
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$(INSTALL_PROGRAM) sis$(EXEEXT) $(DESTDIR)$(bindir)/$$n$(EXEEXT)
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clean-sis:
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rm -f sis
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