From mboxrd@z Thu Jan  1 00:00:00 1970
From: Peter Schmid <schmid@ltoi.iap.physik.tu-darmstadt.de>
To: egcs@cygnus.com
Subject: i386 of pentium architecture? 
Date: Mon, 01 Dec 1997 07:38:00 -0000
Message-id: <Pine.A32.3.95.971201153053.22215A-100000@ltoi.iap.physik.tu-darmstadt.de>
X-SW-Source: 1997-12/msg00026.html

Is an i386 considered to be of pentium architecture?

When egcs compiles a random programm e.g.
s.c
int main()
{
    return 0;
    
}
the argument -march=pentium is set implicitly when cc1 runs.
The preprocessor options are correct.

gcc -v -o s s.c -save-temps
Reading specs from /usr/lib/gcc-lib/i386-pc-linux-gnulibc1/egcs-2.90.19/specs
gcc version egcs-2.90.19 971127 (gcc2-970802 experimental)
 /usr/lib/gcc-lib/i386-pc-linux-gnulibc1/egcs-2.90.19/cpp -lang-c -v -undef -D__GNUC__=2 -D__GNUC_MINOR__=90 -D__ELF__ -Dunix -Dlinux -D__ELF__ -D__unix__ -D__linux__ -D__unix -D__linux -Asystem(posix) -Di386 -Asystem(unix) -Acpu(i386) -Amachine(i386) -D_
_i386__ -Asystem(unix) -Acpu(i386) -Amachine(i386) s.c s.i
GNU CPP version egcs-2.90.19 971127 (gcc2-970802 experimental) (i386 Linux/ELF)

s.s
/ options passed: 
/ options enabled:  -fpeephole -ffunction-cse -fkeep-static-consts
/ -fpcc-struct-return -fcommon -fverbose-asm -fgnu-linker -fargument-alias
/ -m80387 -mhard-float -mno-soft-float -mieee-fp -mfp-ret-in-387
/ -mschedule-prologue -mcpu=i386 -march=pentium
                                  ^^^^^^^^^^^^^  
when I add -m386 to CFLAGS I get:
s.s
/ options passed:  -mcpu=i386 -march=i386 -m386
/ options enabled:  -fpeephole -ffunction-cse -fkeep-static-consts
/ -fpcc-struct-return -fcommon -fverbose-asm -fgnu-linker -fargument-alias
/ -m80387 -mhard-float -mno-soft-float -mieee-fp -mfp-ret-in-387
/ -mschedule-prologue -mcpu=i386 -march=i386
                                 ^^^^^^^^^^^   

The contents of the specs file:                                 
*asm:
%{v:-V} %{Qy:} %{!Qn:-Qy} %{n} %{T} %{Ym,*} %{Yd,*} %{Wa,*:%*}

*asm_final:
%|

*cpp:
%(cpp_cpu) %[cpp_cpu] %{fPIC:-D__PIC__ -D__pic__} %{fpic:-D__PIC__ -D__pic__} %{posix:-D_POSIX_SOURCE}

*cc1:
%(cc1_cpu) %{profile:-p}

*cc1plus:


*endfile:
%{!shared:crtend.o%s} %{shared:crtendS.o%s} crtn.o%s

*link:
-m elf_i386 %{shared:-shared}   %{!shared:     %{!ibcs:       %{!static: 	%{rdynamic:-export-dynamic} 	%{!dynamic-linker:-dynamic-linker /lib/ld-linux.so.1}} 	%{static:-static}}}

*lib:
%{!shared: %{p:-lgmon} %{pg:-lgmon} %{profile:-lgmon -lc_p}      %{!profile:%{!ggdb:-lc} %{ggdb:-lg}}}

*libgcc:
-lgcc

*startfile:
%{!shared:      %{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} 		       %{!p:%{profile:gcrt1.o%s} 			 %{!profile:crt1.o%s}}}}    crti.o%s %{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}

*switches_need_spaces:


*signed_char:
%{funsigned-char:-D__CHAR_UNSIGNED__}

*predefines:
-D__ELF__ -Dunix -Dlinux -Asystem(posix)

*cross_compile:
0

*version:
egcs-2.90.19

*multilib:
. ;

*multilib_defaults:


*multilib_extra:


*multilib_matches:


*cpp_cpu:
-Di386  -Asystem(unix) -Acpu(i386) -Amachine(i386) %{mcpu=i486:-Di486} %{m486:-Di486} %{mpentium:-Dpentium -Di586} %{mcpu=pentium:-Dpentium -Di586} %{mpentiumpro:-Dpentiumpro -Di686} %{mcpu=pentiumpro:-Dpentiumpro -Di686}

*cc1_cpu:
%{!mcpu*: %{m386:-mcpu=i386 -march=i386} %{mno-486:-mcpu=i386 -march=i386} %{m486:-mcpu=i486 -march=i486} %{mno-386:-mcpu=i486 -march=i486} %{mno-pentium:-mcpu=i486 -march=i486} %{mpentium:-mcpu=pentium} %{mno-pentiumpro:-mcpu=pentium} %{mpentiumpro:-mcpu
=pentiumpro}}

Peter Schmid