1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
|
Add three new blind options to set use of Thumb mode:
- COMPILE_IN_THUMB_MODE
- if set, CFLAGS will contain -mthumb
- if unset, the compiler's default is used
- HAS_THUMB
- CPUS with Thumb instruction set can select this
- use of BX depends on this
- FORCE_THUMB
- CPUs that are Thumb-only must select this
- this selects: HAS_THUMB, COMPILE_IN_THUMB_MODE and USE_BX
Also, remove leading space in Rules.mak.
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Cc: Khem Raj <raj.khem@gmail.com>
Cc: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
Cc: Carmelo AMOROSO <carmelo.amoroso@st.com>
---
Rules.mak | 7 ++++---
extra/Configs/Config.arm | 31 ++++++++++++++++++++++++++++---
2 files changed, 32 insertions(+), 6 deletions(-)
--- a/Rules.mak
+++ b/Rules.mak
@@ -348,9 +348,10 @@ ifeq ($(TARGET_ARCH),arm)
CPU_CFLAGS-$(CONFIG_ARM_SA1100)+=-mtune=strongarm1100 -march=armv4
CPU_CFLAGS-$(CONFIG_ARM_XSCALE)+=$(call check_gcc,-mtune=xscale,-mtune=strongarm110)
CPU_CFLAGS-$(CONFIG_ARM_XSCALE)+=-march=armv5te -Wa,-mcpu=xscale
- CPU_CFLAGS-$(CONFIG_ARM_IWMMXT)+=-march=iwmmxt -Wa,-mcpu=iwmmxt -mabi=iwmmxt
- CPU_CFLAGS-$(CONFIG_ARM_CORTEX_M3)+=-mcpu=cortex-m3 -mthumb
- CPU_CFLAGS-$(CONFIG_ARM_CORTEX_M1)+=-mcpu=cortex-m1 -mthumb
+ CPU_CFLAGS-$(CONFIG_ARM_IWMMXT)+=-march=iwmmxt -Wa,-mcpu=iwmmxt -mabi=iwmmxt
+ CPU_CFLAGS-$(CONFIG_ARM_CORTEX_M3)+=-mcpu=cortex-m3
+ CPU_CFLAGS-$(CONFIG_ARM_CORTEX_M1)+=-mcpu=cortex-m1
+ CPU_CFLAGS-$(COMPILE_IN_THUMB_MODE)+=-mthumb
endif
ifeq ($(TARGET_ARCH),mips)
--- a/extra/Configs/Config.arm
+++ b/extra/Configs/Config.arm
@@ -64,70 +64,95 @@ config CONFIG_ARM710
config CONFIG_ARM7TDMI
bool "Arm 7TDMI"
select ARCH_HAS_NO_MMU
+ select HAS_THUMB
config CONFIG_ARM720T
bool "Arm 720T"
select ARCH_HAS_MMU
+ select HAS_THUMB
config CONFIG_ARM920T
bool "Arm 920T"
select ARCH_HAS_MMU
+ select HAS_THUMB
config CONFIG_ARM922T
bool "Arm 922T"
select ARCH_HAS_MMU
+ select HAS_THUMB
config CONFIG_ARM926T
bool "Arm 926T"
select ARCH_HAS_MMU
+ select HAS_THUMB
config CONFIG_ARM10T
bool "Arm 10T"
select ARCH_HAS_MMU
+ select HAS_THUMB
config CONFIG_ARM1136JF_S
bool "Arm 1136JF-S"
select ARCH_HAS_MMU
+ select HAS_THUMB
config CONFIG_ARM1176JZ_S
bool "Arm 1176JZ-S"
select ARCH_HAS_MMU
+ select HAS_THUMB
config CONFIG_ARM1176JZF_S
bool "Arm 1176JZF-S"
select ARCH_HAS_MMU
+ select HAS_THUMB
config CONFIG_ARM_CORTEX_M3
bool "Arm Cortex-M3"
select ARCH_HAS_NO_MMU
- select USE_BX
+ select FORCE_THUMB
config CONFIG_ARM_CORTEX_M1
bool "Arm Cortex-M1"
select ARCH_HAS_NO_MMU
- select USE_BX
+ select FORCE_THUMB
config CONFIG_ARM_SA110
bool "Intel StrongArm SA-110"
select ARCH_HAS_MMU
+ select HAS_THUMB
config CONFIG_ARM_SA1100
bool "Intel StrongArm SA-1100"
select ARCH_HAS_MMU
+ select HAS_THUMB
config CONFIG_ARM_XSCALE
bool "Intel Xscale"
select ARCH_HAS_MMU
+ select HAS_THUMB
config CONFIG_ARM_IWMMXT
bool "Intel Xscale With WMMX PXA27x"
select ARCH_HAS_MMU
+ select HAS_THUMB
endchoice
+config HAS_THUMB
+ bool
+
+config FORCE_THUMB
+ bool
+ select HAS_THUMB
+ select COMPILE_IN_THUMB_MODE
+ select USE_BX
+
+config COMPILE_IN_THUMB_MODE
+ bool
+
config USE_BX
bool "Use BX in function return"
default y
- depends on !CONFIG_GENERIC_ARM && !CONFIG_ARM610 && !CONFIG_ARM710
+ depends on HAS_THUMB
help
Use BX instruction for THUMB aware architectures.
|
