Commit 79310d32 authored by Gustavo Zacarias's avatar Gustavo Zacarias Committed by Peter Korsgaard
Browse files

arch/arm: add support for thumb(1) mode 



[Peter: also adjust BR2_GCC_TARGET_MODE]
Signed-off-by: default avatarGustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: default avatarPeter Korsgaard <jacmet@sunsite.dk>
parent 8316801f

arch/Config.in.arm

+27 −3
Original line number Diff line number Diff line
@@ -31,6 +31,9 @@ config BR2_ARM_CPU_HAS_VFPV4 
	bool

	select BR2_ARM_CPU_HAS_VFPV3



config BR2_ARM_CPU_HAS_THUMB

	bool



config BR2_ARM_CPU_HAS_THUMB2

	bool
@@ -43,28 +46,38 @@ choice 


config BR2_arm7tdmi

	bool "arm7tdmi"

	select BR2_ARM_CPU_HAS_THUMB

config BR2_arm720t

	bool "arm720t"

	select BR2_ARM_CPU_HAS_THUMB

config BR2_arm920t

	bool "arm920t"

	select BR2_ARM_CPU_HAS_THUMB

config BR2_arm922t

	bool "arm922t"

	select BR2_ARM_CPU_HAS_THUMB

config BR2_arm926t

	bool "arm926t"

	select BR2_ARM_CPU_MAYBE_HAS_VFPV2

	select BR2_ARM_CPU_HAS_THUMB

config BR2_arm10t

	bool "arm10t"

	select BR2_ARM_CPU_HAS_THUMB

config BR2_arm1136jf_s_r0

	bool "arm1136jf_s rev0"

	select BR2_ARM_CPU_HAS_VFPV2

	select BR2_ARM_CPU_HAS_THUMB

config BR2_arm1136jf_s_r1

	bool "arm1136jf_s rev1"

	select BR2_ARM_CPU_HAS_VFPV2

	select BR2_ARM_CPU_HAS_THUMB

config BR2_arm1176jz_s

	bool "arm1176jz-s"

	select BR2_ARM_CPU_HAS_THUMB

config BR2_arm1176jzf_s

	bool "arm1176jzf-s"

	select BR2_ARM_CPU_HAS_VFPV2

	select BR2_ARM_CPU_HAS_THUMB

config BR2_cortex_a5

	bool "cortex-A5"

	select BR2_ARM_CPU_MAYBE_HAS_NEON
@@ -99,6 +112,7 @@ config BR2_strongarm 
	bool "strongarm sa110/sa1100"

config BR2_xscale

	bool "xscale"

	select BR2_ARM_CPU_HAS_THUMB

config BR2_iwmmxt

	bool "iwmmxt"

endchoice
@@ -287,7 +301,7 @@ endchoice 


choice

	prompt "ARM instruction set"

	depends on BR2_ARM_CPU_HAS_THUMB2

	depends on BR2_ARM_CPU_HAS_THUMB || BR2_ARM_CPU_HAS_THUMB2



config BR2_ARM_INSTRUCTIONS_ARM_CHOICE

	bool "ARM"
@@ -295,8 +309,18 @@ config BR2_ARM_INSTRUCTIONS_ARM_CHOICE 
	  This option instructs the compiler to generate regular ARM

	  instructions, that are all 32 bits wide.



config BR2_ARM_INSTRUCTIONS_THUMB

	bool "Thumb"

	depends on BR2_ARM_CPU_HAS_THUMB

	help

	  This option instructions the compiler to generate Thumb

	  instructions, which allows to mix 16 bits instructions and

	  32 bits instructions. This generally provides a much smaller

	  compiled binary size.



config BR2_ARM_INSTRUCTIONS_THUMB2

	bool "Thumb2"

	depends on BR2_ARM_CPU_HAS_THUMB2

	help

	  This option instructions the compiler to generate Thumb2

	  instructions, which allows to mix 16 bits instructions and
@@ -307,7 +331,7 @@ endchoice 


config BR2_ARM_INSTRUCTIONS_ARM

	def_bool y

	depends on !BR2_ARM_INSTRUCTIONS_THUMB2

	depends on !(BR2_ARM_INSTRUCTIONS_THUMB || BR2_ARM_INSTRUCTIONS_THUMB2)



config BR2_ARCH

	default "arm"	if BR2_arm
@@ -381,4 +405,4 @@ config BR2_GCC_TARGET_FLOAT_ABI 


config BR2_GCC_TARGET_MODE

	default "arm"		if BR2_ARM_INSTRUCTIONS_ARM

	default "thumb"		if BR2_ARM_INSTRUCTIONS_THUMB2
 
	default "thumb"		if BR2_ARM_INSTRUCTIONS_THUMB || BR2_ARM_INSTRUCTIONS_THUMB2