binutils-gdb/ld/emulparams
Nick Clifton b38cadfb70 * elf32-arm.c (elf32_arm_nacl_plt0_entry, elf32_arm_nacl_plt_entry):
New variables.
	(struct elf32_arm_link_hash_table): New member `nacl_p'.
	(elf32_arm_link_hash_table_create): Initialize it.
	(elf32_arm_nacl_link_hash_table_create): New function.
	(arm_movw_immediate, arm_movt_immediate): New functions.
	(elf32_arm_populate_plt_entry): Test HTAB->nacl_p.
	(elf32_arm_finish_dynamic_sections): Likewise.
	(elf32_arm_output_plt_map_1): Likewise.
	(bfd_elf32_littlearm_nacl_vec, bfd_elf32_bigarm_nacl_vec):
	New backend vector stanza.
	(elf32_arm_nacl_modify_segment_map): New function.
	* config.bfd: Handle arm-*-nacl*, armeb-*-nacl*.
	* targets.c: Support bfd_elf32_{big,little}_nacl_vec.
	* configure.in: Likewise.
	(bfd_elf32_bigarm_nacl_vec): Add elf-nacl.lo here.
	(bfd_elf32_littlearm_nacl_vec): Likewise.
	(bfd_elf32_bigarm_vec, bfd_elf32_littlearm_vec): Likewise.
	(bfd_elf32_bigarm_symbian_vec): Likewise.
	(bfd_elf32_littlearm_symbian_vec): Likewise.
	(bfd_elf32_bigarm_vxworks_vec): Likewise.
	(bfd_elf32_littlearm_vxworks_vec): Likewise.
	* configure: Regenerated.

	* configure.tgt (arm-*-nacl*): Match it.
	* config/te-nacl.h (FPU_DEFAULT, EABI_DEFAULT): Define.
	(LOCAL_LABELS_DOLLAR): Define.
	* config/tc-arm.c (elf32_arm_target_format) [TE_NACL]:
	Use nacl format variants.

	* gas/elf/elf.exp (run_elf_list_test): Treat arm-*-nacl* targets
	as -armeabi.

	* gas/arm/any-idiv.d: Match *-*-nacl* targets too.
	* gas/arm/arch4t.d: Likewise.
	* gas/arm/arch4t-eabi.d: Likewise.
	* gas/arm/attr-any-armv4t.d: Likewise.
	* gas/arm/attr-any-thumbv6.d: Likewise.
	* gas/arm/attr-cpu-directive.d: Likewise.
	* gas/arm/attr-default.d: Likewise.
	* gas/arm/attr-march-all.d: Likewise.
	* gas/arm/attr-march-armv1.d: Likewise.
	* gas/arm/attr-march-armv2a.d: Likewise.
	* gas/arm/attr-march-armv2.d: Likewise.
	* gas/arm/attr-march-armv2s.d: Likewise.
	* gas/arm/attr-march-armv3.d: Likewise.
	* gas/arm/attr-march-armv3m.d: Likewise.
	* gas/arm/attr-march-armv4.d: Likewise.
	* gas/arm/attr-march-armv4t.d: Likewise.
	* gas/arm/attr-march-armv4txm.d: Likewise.
	* gas/arm/attr-march-armv4xm.d: Likewise.
	* gas/arm/attr-march-armv5.d: Likewise.
	* gas/arm/attr-march-armv5t.d: Likewise.
	* gas/arm/attr-march-armv5te.d: Likewise.
	* gas/arm/attr-march-armv5tej.d: Likewise.
	* gas/arm/attr-march-armv5texp.d: Likewise.
	* gas/arm/attr-march-armv5txm.d: Likewise.
	* gas/arm/attr-march-armv6.d: Likewise.
	* gas/arm/attr-march-armv6j.d: Likewise.
	* gas/arm/attr-march-armv6k.d: Likewise.
	* gas/arm/attr-march-armv6k+sec.d: Likewise.
	* gas/arm/attr-march-armv6kt2.d: Likewise.
	* gas/arm/attr-march-armv6-m.d: Likewise.
	* gas/arm/attr-march-armv6-m+os.d: Likewise.
	* gas/arm/attr-march-armv6s-m.d: Likewise.
	* gas/arm/attr-march-armv6t2.d: Likewise.
	* gas/arm/attr-march-armv6z.d: Likewise.
	* gas/arm/attr-march-armv6zk.d: Likewise.
	* gas/arm/attr-march-armv6zkt2.d: Likewise.
	* gas/arm/attr-march-armv6zt2.d: Likewise.
	* gas/arm/attr-march-armv7-a.d: Likewise.
	* gas/arm/attr-march-armv7a.d: Likewise.
	* gas/arm/attr-march-armv7-a+idiv.d: Likewise.
	* gas/arm/attr-march-armv7-a+mp.d: Likewise.
	* gas/arm/attr-march-armv7-a+sec.d: Likewise.
	* gas/arm/attr-march-armv7-a+sec+virt.d: Likewise.
	* gas/arm/attr-march-armv7-a+virt.d: Likewise.
	* gas/arm/attr-march-armv7.d: Likewise.
	* gas/arm/attr-march-armv7em.d: Likewise.
	* gas/arm/attr-march-armv7-m.d: Likewise.
	* gas/arm/attr-march-armv7m.d: Likewise.
	* gas/arm/attr-march-armv7-r.d: Likewise.
	* gas/arm/attr-march-armv7r.d: Likewise.
	* gas/arm/attr-march-armv7-r+mp.d: Likewise.
	* gas/arm/attr-march-iwmmxt2.d: Likewise.
	* gas/arm/attr-march-iwmmxt.d: Likewise.
	* gas/arm/attr-march-xscale.d: Likewise.
	* gas/arm/attr-mcpu.d: Likewise.
	* gas/arm/attr-mfpu-arm1020e.d: Likewise.
	* gas/arm/attr-mfpu-arm1020t.d: Likewise.
	* gas/arm/attr-mfpu-arm1136jf-s.d: Likewise.
	* gas/arm/attr-mfpu-arm1136jfs.d: Likewise.
	* gas/arm/attr-mfpu-arm7500fe.d: Likewise.
	* gas/arm/attr-mfpu-fpa10.d: Likewise.
	* gas/arm/attr-mfpu-fpa11.d: Likewise.
	* gas/arm/attr-mfpu-fpa.d: Likewise.
	* gas/arm/attr-mfpu-fpe2.d: Likewise.
	* gas/arm/attr-mfpu-fpe3.d: Likewise.
	* gas/arm/attr-mfpu-fpe.d: Likewise.
	* gas/arm/attr-mfpu-maverick.d: Likewise.
	* gas/arm/attr-mfpu-neon.d: Likewise.
	* gas/arm/attr-mfpu-neon-fp16.d: Likewise.
	* gas/arm/attr-mfpu-softfpa.d: Likewise.
	* gas/arm/attr-mfpu-softvfp.d: Likewise.
	* gas/arm/attr-mfpu-softvfp+vfp.d: Likewise.
	* gas/arm/attr-mfpu-vfp10.d: Likewise.
	* gas/arm/attr-mfpu-vfp10-r0.d: Likewise.
	* gas/arm/attr-mfpu-vfp3.d: Likewise.
	* gas/arm/attr-mfpu-vfp9.d: Likewise.
	* gas/arm/attr-mfpu-vfp.d: Likewise.
	* gas/arm/attr-mfpu-vfpv2.d: Likewise.
	* gas/arm/attr-mfpu-vfpv3-d16.d: Likewise.
	* gas/arm/attr-mfpu-vfpv3.d: Likewise.
	* gas/arm/attr-mfpu-vfpv4-d16.d: Likewise.
	* gas/arm/attr-mfpu-vfpv4.d: Likewise.
	* gas/arm/attr-mfpu-vfpxd.d: Likewise.
	* gas/arm/attr-names.d: Likewise.
	* gas/arm/attr-order.d: Likewise.
	* gas/arm/attr-override-cpu-directive.d: Likewise.
	* gas/arm/attr-override-mcpu.d: Likewise.
	* gas/arm/got_prel.d: Likewise.
	* gas/arm/mapdir.d: Likewise.
	* gas/arm/mapmisc.d: Likewise.
	* gas/arm/mapsecs.d: Likewise.
	* gas/arm/mapshort-eabi.d: Likewise.
	* gas/arm/mapshort-elf.d: Likewise.
	* gas/arm/mov-highregs-any.d: Likewise.
	* gas/arm/mov-lowregs-any.d: Likewise.
	* gas/arm/pr12198-1.d: Likewise.
	* gas/arm/pr12198-2.d: Likewise.
	* gas/arm/thumb.d: Likewise.
	* gas/arm/thumb-eabi.d: Likewise.
	* gas/arm/thumbrel.d: Likewise.

	* configure.tgt (arm*-*-nacl*, arm*b-*-nacl*): Handle them.
	* emulparams/armelf_nacl.sh: New file.
	* emulparams/armelfb_nacl.sh: New file.
	* Makefile.am (ALL_EMULATION_SOURCES): Add earmelf_nacl.c
	and earmelfb_nacl.c here.
	(earmelf_nacl.c, earmelfb_nacl.c): New targets.
	* Makefile.in: Regenerated.

	* ld-arm/arm-elf.exp (armelftests): Split out into ...
	(armelftests_common, armelftests_nonacl): ... these two.
	(armeabitests): Split out into ...
	(armeabitests_common, armeabitests_nonacl): ... these two.
	Omit _nonacl sets for arm*-*-nacl* targets.

	* ld-arm/farcall-mix.d: Don't match exact addresses, only symbolic ones.
	* ld-arm/farcall-mix2.d: Likewise.
	* ld-arm/farcall-group.d: Likewise.

	* ld-arm/tls-gdesc-got.d: Match variant file formats too.
	Accept some variation in exact addresses.

	* ld-arm/thumb2-b-interwork.d: Match variant file formats too.
	Fix regexps not to care about exact addresses where not relevant.

	* ld-arm/thumb2-bl-undefweak.d: Match any hex strings, not any
	strings of particular exact lengths.
	* ld-arm/thumb2-bl-undefweak1.d: Likewise.

	* ld-arm/arm-app.r: Match variant file formats too.
	* ld-arm/arm-app-abs32.r: Likewise.
	* ld-arm/arm-lib.d: Likewise.
	* ld-arm/arm-lib.r: Likewise.
	* ld-arm/arm-static-app.r: Likewise.
	* ld-arm/armv4-bx.d: Likewise.
	* ld-arm/data-only-map.d: Likewise.
	* ld-arm/group-relocs.d: Likewise.
	* ld-arm/jump19.d: Likewise.
	* ld-arm/reloc-boundaries.d: Likewise.
	* ld-arm/thumb1-bl.d: Likewise.
	* ld-arm/thumb2-bl.d: Likewise.
	* ld-arm/tls-app.d: Likewise.
	* ld-arm/tls-app.r: Likewise.
	* ld-arm/tls-gdierelax.d: Likewise.
	* ld-arm/tls-gdierelax2.d: Likewise.
	* ld-arm/tls-gdlerelax.d: Likewise.
	* ld-arm/tls-lib.d: Likewise.
	* ld-arm/tls-lib.r: Likewise.
	* ld-arm/tls-mixed.r: Likewise.
	* ld-arm/vfp11-fix-none.d: Likewise.
	* ld-arm/vfp11-fix-scalar.d: Likewise.
	* ld-arm/vfp11-fix-vector.d: Likewise.
	* ld-arm/arm-static-app.d: Likewise.
	Fix regexps not to care about exact number of leading spaces.
	* ld-arm/arm-app-abs32.d: Likewise.
	* ld-arm/fix-arm1176-off.d: Likewise.
	* ld-arm/fix-arm1176-on.d: Likewise.

	* ld-arm/arm-elf.exp: Treat nacl targets like eabi targets.
2012-04-12 13:01:15 +00:00
..
README
aix5ppc.sh
aix5rs6.sh
aixppc.sh
aixrs6.sh
alpha.sh
alphavms.sh 2010-04-14 Tristan Gingold <gingold@adacore.com> 2010-04-14 09:27:27 +00:00
arcelf.sh
arm_epoc_pe.sh
arm_wince_pe.sh
armaoutb.sh
armaoutl.sh
armcoff.sh
armelf.sh
armelf_fbsd.sh
armelf_linux.sh
armelf_linux_eabi.sh
armelf_nacl.sh * elf32-arm.c (elf32_arm_nacl_plt0_entry, elf32_arm_nacl_plt_entry): 2012-04-12 13:01:15 +00:00
armelf_nbsd.sh
armelf_vxworks.sh
armelfb.sh
armelfb_linux.sh
armelfb_linux_eabi.sh
armelfb_nacl.sh * elf32-arm.c (elf32_arm_nacl_plt0_entry, elf32_arm_nacl_plt_entry): 2012-04-12 13:01:15 +00:00
armelfb_nbsd.sh
armnbsd.sh
armnto.sh
armpe.sh
armsymbian.sh
avr1.sh
avr2.sh
avr3.sh
avr4.sh
avr5.sh
avr6.sh
avr25.sh
avr31.sh
avr35.sh
avr51.sh
avrxmega1.sh /bfd: 2011-03-22 18:10:48 +00:00
avrxmega2.sh /bfd: 2011-03-22 18:10:48 +00:00
avrxmega3.sh /bfd: 2011-03-22 18:10:48 +00:00
avrxmega4.sh /bfd: 2011-03-22 18:10:48 +00:00
avrxmega5.sh /bfd: 2011-03-22 18:10:48 +00:00
avrxmega6.sh /bfd: 2011-03-22 18:10:48 +00:00
avrxmega7.sh /bfd: 2011-03-22 18:10:48 +00:00
bfin.sh blackfin: add support for L1 code/data flags 2010-11-15 22:30:47 +00:00
coff_i860.sh
coff_sparc.sh
crisaout.sh
criself.sh
crislinux.sh
d10velf.sh
d30v_e.sh
d30v_o.sh
d30velf.sh
delta68.sh
elf32_dlx.sh
elf32_i860.sh
elf32_i960.sh
elf32_sparc.sh * emulparams/elf32_sparc.sh: Set NOP to 0x01000000 2010-09-20 18:41:15 +00:00
elf32_sparc_sol2.sh ld: 2010-10-22 12:08:32 +00:00
elf32_sparc_vxworks.sh
elf32_spu.sh
elf32_tic6x_be.sh bfd: 2010-03-25 21:12:36 +00:00
elf32_tic6x_elf_be.sh ld/ 2011-05-13 18:15:33 +00:00
elf32_tic6x_elf_le.sh ld/ 2011-05-13 18:15:33 +00:00
elf32_tic6x_le.sh 2011-04-18 Paul Brook <paul@codesourcery.com> 2011-04-18 13:41:40 +00:00
elf32_tic6x_linux_be.sh ld/ 2011-05-13 18:15:33 +00:00
elf32_tic6x_linux_le.sh ld/ 2011-05-13 18:15:33 +00:00
elf32_x86_64.sh Support arch-dependent fill 2012-01-31 17:54:39 +00:00
elf32_x86_64_nacl.sh bfd/ 2012-04-03 16:01:38 +00:00
elf32am33lin.sh
elf32b4300.sh
elf32bfinfd.sh blackfin: add support for L1 code/data flags 2010-11-15 22:30:47 +00:00
elf32bmip.sh * emulparams/elf32bmip.sh (OTHER_SECTIONS): Put .mdebug.* and 2011-12-20 17:55:24 +00:00
elf32bmipn32-defs.sh
elf32bmipn32.sh
elf32bsmip.sh
elf32btsmip.sh
elf32btsmip_fbsd.sh bfd/ 2010-12-31 11:01:00 +00:00
elf32btsmipn32.sh
elf32btsmipn32_fbsd.sh bfd/ 2010-12-31 11:01:00 +00:00
elf32cr16.sh
elf32cr16c.sh
elf32crx.sh
elf32ebmip.sh
elf32ebmipvxworks.sh
elf32elmip.sh
elf32elmipvxworks.sh
elf32epiphany.sh bfd: 2011-10-25 11:18:16 +00:00
elf32fr30.sh
elf32frv.sh
elf32frvfd.sh
elf32i370.sh
elf32ip2k.sh
elf32iq10.sh
elf32iq2000.sh
elf32l4300.sh
elf32lm32.sh
elf32lm32fd.sh
elf32lmip.sh
elf32lppc.sh
elf32lppcnto.sh
elf32lppcsim.sh
elf32lsmip.sh
elf32ltsmip.sh
elf32ltsmip_fbsd.sh bfd/ 2010-12-31 11:01:00 +00:00
elf32ltsmipn32.sh
elf32ltsmipn32_fbsd.sh bfd/ 2010-12-31 11:01:00 +00:00
elf32m32c.sh
elf32mb_linux.sh
elf32mcore.sh * ldmain.c (main): Flush stdout before and stderr after printing 2011-01-14 12:37:17 +00:00
elf32mep.sh
elf32microblaze.sh
elf32mipswindiss.sh
elf32moxie.sh
elf32mt.sh
elf32openrisc.sh
elf32ppc.sh bfd/ 2011-07-26 01:57:18 +00:00
elf32ppc_fbsd.sh * Makefile.am (ALL_64_EMULATION_SOURCES): Add powerpc64-*-freebsd 2011-11-21 13:22:46 +00:00
elf32ppccommon.sh
elf32ppclinux.sh
elf32ppcnto.sh
elf32ppcsim.sh
elf32ppcvxworks.sh
elf32ppcwindiss.sh
elf32rl78.sh [.] 2011-11-02 03:09:11 +00:00
elf32rx.sh
elf32tilegx.sh Add big-endian support for tilegx. 2012-02-25 19:51:34 +00:00
elf32tilegx_be.sh Add big-endian support for tilegx. 2012-02-25 19:51:34 +00:00
elf32tilepro.sh * Makefile.am (ALL_MACHINES): Add cpu-tilegx.lo and cpu-tilepro.lo. 2011-06-13 15:18:54 +00:00
elf32vax.sh
elf32xc16x.sh
elf32xc16xl.sh
elf32xc16xs.sh
elf32xstormy16.sh
elf32xtensa.sh
elf64_aix.sh
elf64_ia64.sh
elf64_ia64_fbsd.sh
elf64_ia64_vms.sh * configure.ac (ia64*-*-*vms*): Add support for ld. 2012-04-12 07:35:07 +00:00
elf64_s390.sh
elf64_sparc.sh
elf64_sparc_fbsd.sh
elf64_sparc_sol2.sh ld: 2010-10-22 12:08:32 +00:00
elf64alpha.sh
elf64alpha_fbsd.sh
elf64alpha_nbsd.sh
elf64bmip-defs.sh
elf64bmip.sh
elf64btsmip.sh
elf64btsmip_fbsd.sh bfd/ 2010-12-31 11:01:00 +00:00
elf64hppa.sh
elf64lppc.sh
elf64ltsmip.sh
elf64ltsmip_fbsd.sh bfd/ 2010-12-31 11:01:00 +00:00
elf64mmix.sh
elf64ppc.sh bfd/ 2011-07-26 01:57:18 +00:00
elf64ppc_fbsd.sh * Makefile.am (ALL_64_EMULATION_SOURCES): Add powerpc64-*-freebsd 2011-11-21 13:22:46 +00:00
elf64tilegx.sh Add big-endian support for tilegx. 2012-02-25 19:51:34 +00:00
elf64tilegx_be.sh Add big-endian support for tilegx. 2012-02-25 19:51:34 +00:00
elf_fbsd.sh
elf_i386.sh Support arch-dependent fill 2012-01-31 17:54:39 +00:00
elf_i386_be.sh Support arch-dependent fill 2012-01-31 17:54:39 +00:00
elf_i386_chaos.sh * emultempl/elf32.em (gld${EMULATION_NAME}_add_options, 2011-07-14 02:38:43 +00:00
elf_i386_fbsd.sh
elf_i386_ldso.sh Support arch-dependent fill 2012-01-31 17:54:39 +00:00
elf_i386_nacl.sh bfd/ 2012-04-03 16:01:38 +00:00
elf_i386_sol2.sh * emultempl/solaris2.em (elf_solaris2_before_allocation): Renamed 2010-10-12 18:39:36 +00:00
elf_i386_vxworks.sh Support arch-dependent fill 2012-01-31 17:54:39 +00:00
elf_k1om.sh Support arch-dependent fill 2012-01-31 17:54:39 +00:00
elf_k1om_fbsd.sh Add initial Intel K1OM support. 2011-07-22 20:22:38 +00:00
elf_l1om.sh Support arch-dependent fill 2012-01-31 17:54:39 +00:00
elf_l1om_fbsd.sh
elf_nacl.sh bfd/ 2012-04-03 16:01:38 +00:00
elf_s390.sh
elf_x86_64.sh Support arch-dependent fill 2012-01-31 17:54:39 +00:00
elf_x86_64_fbsd.sh
elf_x86_64_nacl.sh bfd/ 2012-04-03 16:01:38 +00:00
elf_x86_64_sol2.sh * emultempl/solaris2.em (elf_solaris2_before_allocation): Renamed 2010-10-12 18:39:36 +00:00
gld960.sh
gld960coff.sh
h8300.sh
h8300elf.sh
h8300h.sh
h8300helf.sh
h8300hn.sh
h8300hnelf.sh
h8300s.sh
h8300self.sh
h8300sn.sh
h8300snelf.sh
h8300sx.sh
h8300sxelf.sh
h8300sxn.sh
h8300sxnelf.sh
h8500.sh
h8500b.sh
h8500c.sh
h8500m.sh
h8500s.sh
hp3hpux.sh
hp300bsd.sh
hppa64linux.sh
hppaelf.sh
hppalinux.sh PR ld/12376 2011-02-18 18:20:29 +00:00
hppanbsd.sh
hppaobsd.sh
i386aout.sh
i386beos.sh
i386bsd.sh
i386coff.sh
i386go32.sh
i386linux.sh
i386lynx.sh
i386mach.sh
i386moss.sh
i386msdos.sh
i386nbsd.sh
i386nto.sh
i386nw.sh
i386pe.sh
i386pe_posix.sh
i386pep.sh
lnk960.sh
m32relf.sh
m32relf_linux.sh
m32rlelf.sh
m32rlelf_linux.sh
m68hc11elf.sh
m68hc11elfb.sh
m68hc12elf.sh
m68hc12elfb.sh
m68k4knbsd.sh
m68kaout.sh
m68kaux.sh
m68kcoff.sh
m68kelf.sh
m68kelfnbsd.sh
m68klinux.sh
m68knbsd.sh
m68kpsos.sh
m88kbcs.sh
mcorepe.sh
mipsbig.sh
mipsbsd.sh
mipsidt.sh
mipsidtl.sh
mipslit.sh
mipslnews.sh
mipspe.sh
mmo.sh
mn10200.sh
mn10300.sh
msp430all.sh
news.sh
ns32knbsd.sh
or32.sh
or32elf.sh
pc532macha.sh
pdp11.sh
pjelf.sh
pjlelf.sh
plt_unwind.sh * emultempl/elf32.em (gld${EMULATION_NAME}_add_options, 2011-07-14 02:38:43 +00:00
ppclynx.sh
ppcmacos.sh
ppcnw.sh
ppcpe.sh
riscix.sh
scoreelf.sh
sh.sh
shelf.sh
shelf32.sh
shelf32_linux.sh
shelf32_nbsd.sh
shelf64.sh
shelf64_nbsd.sh
shelf_fd.sh 2010-05-21 Daniel Jacobowitz <dan@codesourcery.com> 2010-05-25 14:12:43 +00:00
shelf_linux.sh
shelf_nbsd.sh
shelf_nto.sh
shelf_uclinux.sh
shelf_vxworks.sh
shl.sh
shlelf.sh
shlelf32.sh
shlelf32_linux.sh
shlelf32_nbsd.sh
shlelf64.sh
shlelf64_nbsd.sh
shlelf_fd.sh 2010-05-21 Daniel Jacobowitz <dan@codesourcery.com> 2010-05-25 14:12:43 +00:00
shlelf_linux.sh 2010-05-21 Daniel Jacobowitz <dan@codesourcery.com> 2010-05-25 14:12:43 +00:00
shlelf_nbsd.sh
shlelf_nto.sh
shlelf_vxworks.sh
shlsymbian.sh
shpe.sh
solaris2.sh * emultempl/solaris2.em (elf_solaris2_before_allocation): Renamed 2010-10-12 18:39:36 +00:00
sparcaout.sh
sparclinux.sh
sparcnbsd.sh
st2000.sh
sun3.sh
sun4.sh
tic3xcoff.sh
tic3xcoff_onchip.sh
tic4xcoff.sh
tic30aout.sh
tic30coff.sh
tic54xcoff.sh
tic80coff.sh
v850.sh
vanilla.sh
vax.sh
vaxnbsd.sh
vsta.sh
vxworks.sh
w65.sh
z80.sh
z8001.sh
z8002.sh

README

The files in this directory are read by genscripts.sh as shell commands.
They set parameters for the emulations.