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Support for Keil compiler RAW32 CPU specific task switching for Cortex M0,1,3,4,7

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This commit is contained in:
inmarket 2016-12-06 13:47:33 +10:00
parent c1e2863078
commit ad29f4fee0
5 changed files with 107 additions and 70 deletions
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1
docs/releases.txt
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@ -27,6 +27,7 @@ FIX: Fixed strange multi-thread issues in GEVENT
FEATURE: Added ILI9488 driver
FEATURE: Added the ability to display the detected compiler
FIX: Fixed an illegal instruction in the Cortex M0 task switcher
FEATURE: Add support for the Keil compiler for RAW32 task switching for Cortex M0,1,3,4,7
*** Release 2.6 ***

26
src/gos/gos_x_threads.c
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@ -186,7 +186,7 @@ typedef struct threadQ {
static threadQ readyQ; // The list of ready threads
static threadQ deadQ; // Where we put threads waiting to be deallocated
static thread * current; // The current running thread
thread * _gfxCurrentThread; // The current running thread - unfortunately this has to be non-static for the keil compiler
static thread mainthread; // The main thread context
#undef GFX_THREADS_DONE
@ -399,7 +399,7 @@ static thread mainthread; // The main thread context
// as we are on a different stack.
// Run the users function.
gfxThreadExit(current->fn(current->param));
gfxThreadExit(_gfxCurrentThread->fn(_gfxCurrentThread->param));
// We never get here as gfxThreadExit() never returns
}
@ -451,11 +451,11 @@ void _gosThreadsInit(void) {
_gfxThreadsInit();
current = &mainthread;
_gfxCurrentThread = &mainthread;
}
gfxThreadHandle gfxThreadMe(void) {
return (gfxThreadHandle)current;
return (gfxThreadHandle)_gfxCurrentThread;
}
// Check if there are dead processes to deallocate
@ -476,9 +476,9 @@ void gfxYield(void) {
if (!readyQ.head)
return;
Qadd(&readyQ, me = current);
current = Qpop(&readyQ);
_gfxTaskSwitch(me, current);
Qadd(&readyQ, me = _gfxCurrentThread);
_gfxCurrentThread = Qpop(&readyQ);
_gfxTaskSwitch(me, _gfxCurrentThread);
}
// This routine is not currently public - but it could be.
@ -486,7 +486,7 @@ void gfxThreadExit(threadreturn_t ret) {
thread *me;
// Save the results in case someone is waiting
me = current;
me = _gfxCurrentThread;
me->param = (void *)ret;
me->flags |= FLG_THD_DEAD;
@ -496,11 +496,11 @@ void gfxThreadExit(threadreturn_t ret) {
Qadd(&deadQ, me);
// Set the next thread. Exit if it was the last thread
if (!(current = Qpop(&readyQ)))
if (!(_gfxCurrentThread = Qpop(&readyQ)))
gfxExit();
// Switch to the new thread
_gfxTaskSwitch(me, current);
_gfxTaskSwitch(me, _gfxCurrentThread);
// We never get back here as we didn't re-queue ourselves
}
@ -530,9 +530,9 @@ gfxThreadHandle gfxThreadCreate(void *stackarea, size_t stacksz, threadpriority_
t->param = param;
// Add the current thread to the queue because we are starting a new thread.
me = current;
me = _gfxCurrentThread;
Qadd(&readyQ, me);
current = t;
_gfxCurrentThread = t;
_gfxStartThread(me, t);
@ -544,7 +544,7 @@ threadreturn_t gfxThreadWait(gfxThreadHandle th) {
thread * t;
t = th;
if (t == current)
if (t == _gfxCurrentThread)
return -1;
// Mark that we are waiting

50
src/gos/gos_x_threads_cortexm01.h
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@ -60,42 +60,54 @@
#elif GFX_COMPILER == GFX_COMPILER_KEIL || GFX_COMPILER == GFX_COMPILER_ARMCC
static /*__arm*/ void _gfxTaskSwitch(thread *oldt, thread *newt) {
/* push {r4, r5, r6, r7, lr}
static __asm void _gfxTaskSwitch(thread *oldt, thread *newt) {
// Save the old context
push {r4, r5, r6, r7, lr}
mov r4, r8
mov r5, r9
mov r6, r10
mov r7, r11
push {r4, r5, r6, r7}
str sp, %[oldtcxt]
ldr sp, %[newtcxt]
str sp, [r0,#__cpp(offsetof(thread,cxt))] // oldt->cxt
// Load the new context
ldr sp, [r1,#__cpp(offsetof(thread,cxt))] // newt->cxt
pop {r4, r5, r6, r7}
mov r8, r4
mov r9, r5
mov r10, r6
mov r11, r7
pop {r4, r5, r6, r7, pc}
: [newtcxt] "=m" (newt->cxt)
: [oldtcxt] "m" (oldt->cxt)
: "memory");
*/ }
}
static /* __arm */ void _gfxStartThread(thread *oldt, thread *newt) {
newt->cxt = (char *)newt + newt->size;
/* push {r4, r5, r6, r7, lr}
static __asm void _gfxStartThread(thread *oldt, thread *newt) {
// Calculate where to generate the new context
// newt->cxt = (char *)newt + newt->size;
ldr r2,[r1,#__cpp(offsetof(thread,size))]
add r2,r2,r1
str r2,[r1,#__cpp(offsetof(thread,cxt))]
// Save the old context
push {r4, r5, r6, r7, lr}
mov r4, r8
mov r5, r9
mov r6, r10
mov r7, r11
push {r4, r5, r6, r7}
str sp, %[oldtcxt]
ldr sp, %[newtcxt]
: [newtcxt] "=m" (newt->cxt)
: [oldtcxt] "m" (oldt->cxt)
: "memory");
*/
// Run the users function
gfxThreadExit(current->fn(current->param));
str sp, [r0,#__cpp(offsetof(thread,cxt))] // oldt->cxt
// Load the new (imcomplete) context
ldr sp, [r1,#__cpp(offsetof(thread,cxt))] // newt->cxt
// Run the users function - we save some code because gfxThreadExit() never returns
// gfxThreadExit(current->fn(current->param));
LDR r2,__cpp(&_gfxCurrentThread)
LDR r2,[r2,#0]
LDR r0,[r2,#__cpp(offsetof(thread,param))]
LDR r1,[r2,#__cpp(offsetof(thread,fn))]
BLX r1
MOV r4,r0
BL gfxThreadExit
}
#else

50
src/gos/gos_x_threads_cortexm347.h
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@ -46,27 +46,39 @@
#elif GFX_COMPILER == GFX_COMPILER_KEIL || GFX_COMPILER == GFX_COMPILER_ARMCC
static /*__arm*/ void _gfxTaskSwitch(thread *oldt, thread *newt) {
/* push {r4, r5, r6, r7, r8, r9, r10, r11, lr}
str sp, %[oldtcxt]
ldr sp, %[newtcxt]
static __asm void _gfxTaskSwitch(thread *oldt, thread *newt) {
// Save the old context
push {r4, r5, r6, r7, r8, r9, r10, r11, lr}
str sp, [r0,#__cpp(offsetof(thread,cxt))] // oldt->cxt
// Load the new context
ldr sp, [r1,#__cpp(offsetof(thread,cxt))] // newt->cxt
pop {r4, r5, r6, r7, r8, r9, r10, r11, pc}
: [newtcxt] "=m" (newt->cxt)
: [oldtcxt] "m" (oldt->cxt)
: "memory");
*/ }
}
static /* __arm */ void _gfxStartThread(thread *oldt, thread *newt) {
newt->cxt = (char *)newt + newt->size;
/* push {r4, r5, r6, r7, r8, r9, r10, r11, lr}
str sp, %[oldtcxt]
ldr sp, %[newtcxt]
: [newtcxt] "=m" (newt->cxt)
: [oldtcxt] "m" (oldt->cxt)
: "memory");
*/
// Run the users function
gfxThreadExit(current->fn(current->param));
static __asm void _gfxStartThread(thread *oldt, thread *newt) {
// Calculate where to generate the new context
// newt->cxt = (char *)newt + newt->size;
ldr r2,[r1,#__cpp(offsetof(thread,size))]
add r2,r2,r1
str r2,[r1,#__cpp(offsetof(thread,cxt))]
// Save the old context
push {r4, r5, r6, r7, r8, r9, r10, r11, lr}
str sp, [r0,#__cpp(offsetof(thread,cxt))] // oldt->cxt
// Load the new (imcomplete) context
ldr sp, [r1,#__cpp(offsetof(thread,cxt))] // newt->cxt
// Run the users function - we save some code because gfxThreadExit() never returns
// gfxThreadExit(current->fn(current->param));
LDR r2,__cpp(&_gfxCurrentThread)
LDR r2,[r2,#0]
LDR r0,[r2,#__cpp(offsetof(thread,param))]
LDR r1,[r2,#__cpp(offsetof(thread,fn))]
BLX r1
MOV r4,r0
BL gfxThreadExit
}
#else

50
src/gos/gos_x_threads_cortexm47fp.h
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@ -48,30 +48,42 @@
#elif GFX_COMPILER == GFX_COMPILER_KEIL || GFX_COMPILER == GFX_COMPILER_ARMCC
static /*__arm*/ void _gfxTaskSwitch(thread *oldt, thread *newt) {
/* push {r4, r5, r6, r7, r8, r9, r10, r11, lr}
static __asm void _gfxTaskSwitch(thread *oldt, thread *newt) {
// Save the old context
push {r4, r5, r6, r7, r8, r9, r10, r11, lr}
vpush {s16-s31}
str sp, %[oldtcxt]
ldr sp, %[newtcxt]
str sp, [r0,#__cpp(offsetof(thread,cxt))] // oldt->cxt
// Load the new context
ldr sp, [r1,#__cpp(offsetof(thread,cxt))] // newt->cxt
vpop {s16-s31}
pop {r4, r5, r6, r7, r8, r9, r10, r11, pc}
: [newtcxt] "=m" (newt->cxt)
: [oldtcxt] "m" (oldt->cxt)
: "memory");
*/ }
}
static /* __arm */ void _gfxStartThread(thread *oldt, thread *newt) {
newt->cxt = (char *)newt + newt->size;
/* push {r4, r5, r6, r7, r8, r9, r10, r11, lr}
static __asm void _gfxStartThread(thread *oldt, thread *newt) {
// Calculate where to generate the new context
// newt->cxt = (char *)newt + newt->size;
ldr r2,[r1,#__cpp(offsetof(thread,size))]
add r2,r2,r1
str r2,[r1,#__cpp(offsetof(thread,cxt))]
// Save the old context
push {r4, r5, r6, r7, r8, r9, r10, r11, lr}
vpush {s16-s31}
str sp, %[oldtcxt]
ldr sp, %[newtcxt]
: [newtcxt] "=m" (newt->cxt)
: [oldtcxt] "m" (oldt->cxt)
: "memory");
*/
// Run the users function
gfxThreadExit(current->fn(current->param));
str sp, [r0,#__cpp(offsetof(thread,cxt))] // oldt->cxt
// Load the new (imcomplete) context
ldr sp, [r1,#__cpp(offsetof(thread,cxt))] // newt->cxt
// Run the users function - we save some code because gfxThreadExit() never returns
// gfxThreadExit(current->fn(current->param));
LDR r2,__cpp(&_gfxCurrentThread)
LDR r2,[r2,#0]
LDR r0,[r2,#__cpp(offsetof(thread,param))]
LDR r1,[r2,#__cpp(offsetof(thread,fn))]
BLX r1
MOV r4,r0
BL gfxThreadExit
}
#else