bsd.cpu.mk revision 101015 
1# $FreeBSD: head/share/mk/bsd.cpu.mk 101015 2002-07-31 03:56:03Z jhb $
2
3# Allow TARGET_CPUTYPE to override CPUTYPE to handle the cross-build case.
4
5.if defined(TARGET_CPUTYPE)
6CPUTYPE = ${TARGET_CPUTYPE}
7.endif
8
9# Set default CPU compile flags and baseline CPUTYPE for each arch.  The
10# compile flags must support the minimum CPU type for each architecture but
11# may tune support for more advanced processors.
12
13.if !defined(CPUTYPE) || ${CPUTYPE} == ""
14. if ${MACHINE_ARCH} == "i386"
15_CPUCFLAGS = -mcpu=pentiumpro
16CPUTYPE = i386
17. elif ${MACHINE_ARCH} == "alpha"
18_CPUCFLAGS = -mcpu=ev4 -mtune=ev5
19CPUTYPE = ev4
20. elif ${MACHINE_ARCH} == "ia64"
21_CPUCFLAGS =
22CPUTYPE = itanium
23. elif ${MACHINE_ARCH} == "sparc64"
24_CPUCFLAGS =
25CPUTYPE = ultrasparc
26. endif
27.else
28
29# Handle aliases (not documented in make.conf to avoid user confusion
30# between e.g. i586 and pentium)
31
32. if ${MACHINE_ARCH} == "i386"
33.  if ${CPUTYPE} == "pentiumpro"
34CPUTYPE = i686
35.  elif ${CPUTYPE} == "pentium"
36CPUTYPE = i586
37.  elif ${CPUTYPE} == "athlon"
38CPUTYPE = k7
39.  endif
40. endif
41
42# Logic to set up correct gcc optimization flag.  This must be included
43# after /etc/make.conf so it can react to the local value of CPUTYPE
44# defined therein.  Consult:
45#	http://gcc.gnu.org/onlinedocs/gcc/i386-and-x86-64-Options.html
46#	http://gcc.gnu.org/onlinedocs/gcc/DEC-Alpha-Options.html
47#	http://gcc.gnu.org/onlinedocs/gcc/SPARC-Options.html
48#	http://gcc.gnu.org/onlinedocs/gcc/RS-6000-and-PowerPC-Options.html
49
50. if ${MACHINE_ARCH} == "i386"
51.  if ${CPUTYPE} == "k7"
52_CPUCFLAGS = -march=athlon
53.  elif ${CPUTYPE} == "k6-2"
54_CPUCFLAGS = -march=k6
55.  elif ${CPUTYPE} == "k6"
56_CPUCFLAGS = -march=k6
57.  elif ${CPUTYPE} == "k5"
58_CPUCFLAGS = -march=pentium
59.  elif ${CPUTYPE} == "p4"
60_CPUCFLAGS = -march=pentiumpro
61.  elif ${CPUTYPE} == "p3"
62_CPUCFLAGS = -march=pentiumpro
63.  elif ${CPUTYPE} == "p2"
64_CPUCFLAGS = -march=pentiumpro
65.  elif ${CPUTYPE} == "i686"
66_CPUCFLAGS = -march=pentiumpro
67.  elif ${CPUTYPE} == "i586/mmx"
68_CPUCFLAGS = -march=pentium-mmx
69.  elif ${CPUTYPE} == "i586"
70_CPUCFLAGS = -march=pentium
71.  elif ${CPUTYPE} == "i486"
72_CPUCFLAGS = -march=i486
73.  endif
74. elif ${MACHINE_ARCH} == "alpha"
75.  if ${CPUTYPE} == "ev6"
76_CPUCFLAGS = -mcpu=ev6
77.  elif ${CPUTYPE} == "pca56"
78_CPUCFLAGS = -mcpu=pca56
79.  elif ${CPUTYPE} == "ev56"
80_CPUCFLAGS = -mcpu=ev56
81.  elif ${CPUTYPE} == "ev5"
82_CPUCFLAGS = -mcpu=ev5
83.  elif ${CPUTYPE} == "ev45"
84_CPUCFLAGS = -mcpu=ev4		# No -mcpu=ev45 for gcc
85.  elif ${CPUTYPE} == "ev4"
86_CPUCFLAGS = -mcpu=ev4
87.  endif
88. endif
89.endif
90
91# NB: COPTFLAGS is handled in /usr/src/sys/conf/Makefile.<arch>
92
93.if !defined(NO_CPU_CFLAGS)
94CFLAGS += ${_CPUCFLAGS}
95.endif
96
97# Set up the list of CPU features based on the CPU type.  This is an
98# unordered list to make it easy for client makefiles to test for the
99# presence of a CPU feature.
100
101.if ${MACHINE_ARCH} == "i386"
102. if ${CPUTYPE} == "k7"
103MACHINE_CPU = k7 3dnow mmx k6 k5 i586 i486 i386
104. elif ${CPUTYPE} == "k6-2"
105MACHINE_CPU = 3dnow mmx k6 k5 i586 i486 i386
106. elif ${CPUTYPE} == "k6"
107MACHINE_CPU = mmx k6 k5 i586 i486 i386
108. elif ${CPUTYPE} == "k5"
109MACHINE_CPU = k5 i586 i486 i386
110. elif ${CPUTYPE} == "p4"
111MACHINE_CPU = sse i686 mmx i586 i486 i386
112. elif ${CPUTYPE} == "p3"
113MACHINE_CPU = sse i686 mmx i586 i486 i386
114. elif ${CPUTYPE} == "p2"
115MACHINE_CPU = i686 mmx i586 i486 i386
116. elif ${CPUTYPE} == "i686"
117MACHINE_CPU = i686 i586 i486 i386
118. elif ${CPUTYPE} == "i586/mmx"
119MACHINE_CPU = mmx i586 i486 i386
120. elif ${CPUTYPE} == "i586"
121MACHINE_CPU = i586 i486 i386
122. elif ${CPUTYPE} == "i486"
123MACHINE_CPU = i486 i386
124. elif ${CPUTYPE} == "i386"
125MACHINE_CPU = i386
126. endif
127.elif ${MACHINE_ARCH} == "alpha"
128. if ${CPUTYPE} == "ev6"
129MACHINE_CPU = ev6 ev56 pca56 ev5 ev45 ev4
130. elif ${CPUTYPE} == "pca56"
131MACHINE_CPU = pca56 ev56 ev5 ev45 ev4
132. elif ${CPUTYPE} == "ev56"
133MACHINE_CPU = ev56 ev5 ev45 ev4
134. elif ${CPUTYPE} == "ev5"
135MACHINE_CPU = ev5 ev45 ev4
136. elif ${CPUTYPE} == "ev45"
137MACHINE_CPU = ev45 ev4
138. elif ${CPUTYPE} == "ev4"
139MACHINE_CPU = ev4
140. endif
141.elif ${MACHINE_ARCH} == "ia64"
142. if ${CPUTYPE} == "itanium"
143MACHINE_CPU = itanium
144. endif
145.endif
146