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体验新版 GitCode,发现更多精彩内容 >>
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34d59ccb
编写于
6月 23, 2013
作者:
wuyangyong
浏览文件
操作
浏览文件
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电子邮件补丁
差异文件
update libcpu/arm/cortex-m4: support lazy stack optimized.
上级
b045f93b
变更
4
隐藏空白更改
内联
并排
Showing
4 changed file
with
151 addition
and
17 deletion
+151
-17
libcpu/arm/cortex-m4/context_gcc.S
libcpu/arm/cortex-m4/context_gcc.S
+33
-3
libcpu/arm/cortex-m4/context_iar.S
libcpu/arm/cortex-m4/context_iar.S
+37
-1
libcpu/arm/cortex-m4/context_rvds.S
libcpu/arm/cortex-m4/context_rvds.S
+33
-3
libcpu/arm/cortex-m4/cpuport.c
libcpu/arm/cortex-m4/cpuport.c
+48
-10
未找到文件。
libcpu/arm/cortex-m4/context_gcc.S
浏览文件 @
34d59ccb
...
...
@@ -12,10 +12,11 @@
*
2009
-
10
-
11
Bernard
first
version
*
2012
-
01
-
01
aozima
support
context
switch
load
/
store
FPU
register
.
*
2013
-
06
-
18
aozima
add
restore
MSP
feature
.
*
2013
-
06
-
23
aozima
support
lazy
stack
optimized
.
*/
/**
*
@
addtogroup
STM32
*
@
addtogroup
cortex
-
m4
*/
/*@{*/
...
...
@@ -108,10 +109,21 @@ PendSV_Handler:
MRS
r1
,
psp
/*
get
from
thread
stack
pointer
*/
#if defined (__VFP_FP__) && !defined(__SOFTFP__)
TST
lr
,
#
0x10
/*
if
(!
EXC_RETURN
[
4
])
*/
VSTMDB
r1
!,
{
d8
-
d15
}
/*
push
FPU
register
s16
~
s31
*/
#endif
STMFD
r1
!,
{
r4
-
r11
}
/*
push
r4
-
r11
register
*/
#if defined (__VFP_FP__) && !defined(__SOFTFP__)
MOV
r4
,
#
0x00
/*
flag
=
0
*/
TST
lr
,
#
0x10
/*
if
(!
EXC_RETURN
[
4
])
*/
MOVEQ
r4
,
#
0x01
/*
flag
=
1
*/
STMFD
r1
!,
{
r4
}
/*
push
flag
*/
#endif
LDR
r0
,
[
r0
]
STR
r1
,
[
r0
]
/*
update
from
thread
stack
pointer
*/
...
...
@@ -120,10 +132,15 @@ swtich_to_thread:
LDR
r1
,
[
r1
]
LDR
r1
,
[
r1
]
/*
load
thread
stack
pointer
*/
#if defined (__VFP_FP__) && !defined(__SOFTFP__)
LDMFD
r1
!,
{
r3
}
/*
pop
flag
*/
#endif
LDMFD
r1
!,
{
r4
-
r11
}
/*
pop
r4
-
r11
register
*/
#if defined (__VFP_FP__) && !defined(__SOFTFP__)
VLDMIA
r1
!,
{
d8
-
d15
}
/*
pop
FPU
register
s16
~
s31
*/
CMP
r3
,
#
0
/*
if
(
flag_r3
!=
0
)
*/
VLDMIANE
r1
!,
{
d8
-
d15
}
/*
pop
FPU
register
s16
~
s31
*/
#endif
MSR
psp
,
r1
/*
update
stack
pointer
*/
...
...
@@ -132,6 +149,12 @@ pendsv_exit:
/
*
restore
interrupt
*/
MSR
PRIMASK
,
r2
#if defined (__VFP_FP__) && !defined(__SOFTFP__)
ORR
lr
,
lr
,
#
0x10
/*
lr
|=
(
1
<<
4
),
clean
FPCA
.
*/
CMP
r3
,
#
0
/*
if
(
flag_r3
!=
0
)
*/
BICNE
lr
,
lr
,
#
0x10
/*
lr
&=
~
(
1
<<
4
),
set
FPCA
.
*/
#endif
ORR
lr
,
lr
,
#
0x04
BX
lr
...
...
@@ -145,6 +168,13 @@ rt_hw_context_switch_to:
LDR
r1
,
=
rt_interrupt_to_thread
STR
r0
,
[
r1
]
#if defined (__VFP_FP__) && !defined(__SOFTFP__)
/
*
CLEAR
CONTROL
.
FPCA
*/
MRS
r2
,
CONTROL
/*
read
*/
BIC
r2
,
#
0x04
/*
modify
*/
MSR
CONTROL
,
r2
/*
write
-
back
*/
#endif
/
*
set
from
thread
to
0
*/
LDR
r1
,
=
rt_interrupt_from_thread
MOV
r0
,
#
0x0
...
...
libcpu/arm/cortex-m4/context_iar.S
浏览文件 @
34d59ccb
...
...
@@ -13,10 +13,11 @@
; * 2009-09-27 Bernard add protect when contex switch occurs
; * 2012-01-01 aozima support context switch load/store FPU register.
; * 2013-06-18 aozima add restore MSP feature.
; * 2013-06-23 aozima support lazy stack optimized.
; */
;/**
; * @addtogroup
STM32
; * @addtogroup
cortex-m4
; */
;/*@{*/
...
...
@@ -107,10 +108,25 @@ PendSV_Handler:
MRS
r1
,
psp
; get from thread stack pointer
#if defined ( __ARMVFP__ )
TST
lr
,
#
0x10
; if(!EXC_RETURN[4])
BNE
skip_push_fpu
VSTMDB
r1
!,
{
d8
-
d15
}
; push FPU register s16~s31
skip_push_fpu
#endif
STMFD
r1
!,
{
r4
-
r11
}
; push r4 - r11 register
#if defined ( __ARMVFP__ )
MOV
r4
,
#
0x00
; flag = 0
TST
lr
,
#
0x10
; if(!EXC_RETURN[4])
BNE
push_flag
MOV
r4
,
#
0x01
; flag = 1
push_flag
;STMFD r1!, {r4} ; push flag
SUB
r1
,
r1
,
#
0x04
STR
r4
,
[
r1
]
#endif
LDR
r0
,
[
r0
]
STR
r1
,
[
r0
]
; update from thread stack pointer
...
...
@@ -119,10 +135,16 @@ swtich_to_thread
LDR
r1
,
[
r1
]
LDR
r1
,
[
r1
]
; load thread stack pointer
#if defined ( __ARMVFP__ )
LDMFD
r1
!,
{
r3
}
; pop flag
#endif
LDMFD
r1
!,
{
r4
-
r11
}
; pop r4 - r11 register
#if defined ( __ARMVFP__ )
CBZ
r3
,
skip_pop_fpu
VLDMIA
r1
!,
{
d8
-
d15
}
; pop FPU register s16~s31
skip_pop_fpu
#endif
MSR
psp
,
r1
; update stack pointer
...
...
@@ -131,6 +153,13 @@ pendsv_exit
; restore interrupt
MSR
PRIMASK
,
r2
#if defined ( __ARMVFP__ )
ORR
lr
,
lr
,
#
0x10
; lr |= (1 << 4), clean FPCA.
CBZ
r3
,
return_without_fpu
; if(flag_r3 != 0)
BIC
lr
,
lr
,
#
0x10
; lr &= ~(1 << 4), set FPCA.
return_without_fpu
#endif
ORR
lr
,
lr
,
#
0x04
BX
lr
...
...
@@ -143,6 +172,13 @@ rt_hw_context_switch_to:
LDR
r1
,
=
rt_interrupt_to_thread
STR
r0
,
[
r1
]
#if defined ( __ARMVFP__ )
; CLEAR CONTROL.FPCA
MRS
r2
,
CONTROL
; read
BIC
r2
,
r2
,
#
0x04
; modify
MSR
CONTROL
,
r2
; write-back
#endif
; set from thread to 0
LDR
r1
,
=
rt_interrupt_from_thread
MOV
r0
,
#
0x0
...
...
libcpu/arm/cortex-m4/context_rvds.S
浏览文件 @
34d59ccb
...
...
@@ -12,10 +12,11 @@
; * 2009-01-17 Bernard first version.
; * 2012-01-01 aozima support context switch load/store FPU register.
; * 2013-06-18 aozima add restore MSP feature.
; * 2013-06-23 aozima support lazy stack optimized.
; */
;/**
; * @addtogroup
STM32
; * @addtogroup
cortex-m4
; */
;/*@{*/
...
...
@@ -110,10 +111,21 @@ PendSV_Handler PROC
MRS
r1
,
psp
; get from thread stack pointer
IF
{FPU}
!=
"SoftVFP"
VSTMFD
r1
!,
{
d8
-
d15
}
; push FPU register s16~s31
TST
lr
,
#
0x10
; if(!EXC_RETURN[4])
VSTMFDEQ
r1
!,
{
d8
-
d15
}
; push FPU register s16~s31
ENDIF
STMFD
r1
!,
{
r4
-
r11
}
; push r4 - r11 register
IF
{FPU}
!=
"SoftVFP"
MOV
r4
,
#
0x00
; flag = 0
TST
lr
,
#
0x10
; if(!EXC_RETURN[4])
MOVEQ
r4
,
#
0x01
; flag = 1
STMFD
r1
!,
{
r4
}
; push flag
ENDIF
LDR
r0
,
[
r0
]
STR
r1
,
[
r0
]
; update from thread stack pointer
...
...
@@ -122,10 +134,15 @@ swtich_to_thread
LDR
r1
,
[
r1
]
LDR
r1
,
[
r1
]
; load thread stack pointer
IF
{FPU}
!=
"SoftVFP"
LDMFD
r1
!,
{
r3
}
; pop flag
ENDIF
LDMFD
r1
!,
{
r4
-
r11
}
; pop r4 - r11 register
IF
{FPU}
!=
"SoftVFP"
VLDMFD
r1
!,
{
d8
-
d15
}
; pop FPU register s16~s31
CMP
r3
,
#
0
; if(flag_r3 != 0)
VLDMFDNE
r1
!,
{
d8
-
d15
}
; pop FPU register s16~s31
ENDIF
MSR
psp
,
r1
; update stack pointer
...
...
@@ -134,6 +151,12 @@ pendsv_exit
; restore interrupt
MSR
PRIMASK
,
r2
IF
{FPU}
!=
"SoftVFP"
ORR
lr
,
lr
,
#
0x10
; lr |= (1 << 4), clean FPCA.
CMP
r3
,
#
0
; if(flag_r3 != 0)
BICNE
lr
,
lr
,
#
0x10
; lr &= ~(1 << 4), set FPCA.
ENDIF
ORR
lr
,
lr
,
#
0x04
BX
lr
ENDP
...
...
@@ -149,6 +172,13 @@ rt_hw_context_switch_to PROC
LDR
r1
,
=
rt_interrupt_to_thread
STR
r0
,
[
r1
]
IF
{FPU}
!=
"SoftVFP"
; CLEAR CONTROL.FPCA
MRS
r2
,
CONTROL
; read
BIC
r2
,
#
0x04
; modify
MSR
CONTROL
,
r2
; write-back
ENDIF
; set from thread to 0
LDR
r1
,
=
rt_interrupt_from_thread
MOV
r0
,
#
0x0
...
...
libcpu/arm/cortex-m4/cpuport.c
浏览文件 @
34d59ccb
...
...
@@ -16,6 +16,7 @@
* 2012-12-11 lgnq fixed the coding style.
* 2012-12-23 aozima stack addr align to 8byte.
* 2012-12-29 Bernard Add exception hook.
* 2013-06-23 aozima support lazy stack optimized.
*/
#include <rtthread.h>
...
...
@@ -32,6 +33,37 @@ rt_uint32_t rt_thread_switch_interrupt_flag;
static
rt_err_t
(
*
rt_exception_hook
)(
void
*
context
)
=
RT_NULL
;
struct
exception_stack_frame
{
rt_uint32_t
r0
;
rt_uint32_t
r1
;
rt_uint32_t
r2
;
rt_uint32_t
r3
;
rt_uint32_t
r12
;
rt_uint32_t
lr
;
rt_uint32_t
pc
;
rt_uint32_t
psr
;
};
struct
stack_frame
{
#if USE_FPU
rt_uint32_t
flag
;
#endif
/* USE_FPU */
/* r4 ~ r11 register */
rt_uint32_t
r4
;
rt_uint32_t
r5
;
rt_uint32_t
r6
;
rt_uint32_t
r7
;
rt_uint32_t
r8
;
rt_uint32_t
r9
;
rt_uint32_t
r10
;
rt_uint32_t
r11
;
struct
exception_stack_frame
exception_stack_frame
;
};
struct
exception_stack_frame_fpu
{
rt_uint32_t
r0
;
rt_uint32_t
r1
;
...
...
@@ -65,8 +97,10 @@ struct exception_stack_frame
#endif
};
struct
stack_frame
struct
stack_frame
_fpu
{
rt_uint32_t
flag
;
/* r4 ~ r11 register */
rt_uint32_t
r4
;
rt_uint32_t
r5
;
...
...
@@ -97,7 +131,7 @@ struct stack_frame
rt_uint32_t
s31
;
#endif
struct
exception_stack_frame
exception_stack_frame
;
struct
exception_stack_frame
_fpu
exception_stack_frame
;
};
rt_uint8_t
*
rt_hw_stack_init
(
void
*
tentry
,
...
...
@@ -130,6 +164,10 @@ rt_uint8_t *rt_hw_stack_init(void *tentry,
stack_frame
->
exception_stack_frame
.
pc
=
(
unsigned
long
)
tentry
;
/* entry point, pc */
stack_frame
->
exception_stack_frame
.
psr
=
0x01000000L
;
/* PSR */
#if USE_FPU
stack_frame
->
flag
=
0
;
#endif
/* USE_FPU */
/* return task's current stack address */
return
stk
;
}
...
...
@@ -141,20 +179,20 @@ rt_uint8_t *rt_hw_stack_init(void *tentry,
*/
void
rt_hw_exception_install
(
rt_err_t
(
*
exception_handle
)(
void
*
context
))
{
rt_exception_hook
=
exception_handle
;
rt_exception_hook
=
exception_handle
;
}
void
rt_hw_hard_fault_exception
(
struct
exception_stack_frame
*
exception_stack
)
{
extern
long
list_thread
(
void
);
extern
long
list_thread
(
void
);
if
(
rt_exception_hook
!=
RT_NULL
)
{
rt_err_t
result
;
if
(
rt_exception_hook
!=
RT_NULL
)
{
rt_err_t
result
;
result
=
rt_exception_hook
(
exception_stack
);
if
(
result
==
RT_EOK
)
return
;
}
result
=
rt_exception_hook
(
exception_stack
);
if
(
result
==
RT_EOK
)
return
;
}
rt_kprintf
(
"psr: 0x%08x
\n
"
,
exception_stack
->
psr
);
rt_kprintf
(
" pc: 0x%08x
\n
"
,
exception_stack
->
pc
);
...
...
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