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Protected the temporary register in the context switches

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@210 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Linus Nielsen Feltzing 2002-04-24 11:06:41 +00:00
parent c602d3f39a
commit cb9d09c80a
1 changed files with 33 additions and 29 deletions
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62
firmware/thread.c
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@ -46,20 +46,22 @@ static thread_t threads = {1, 0};
*/
static inline void stctx(void* addr)
{
asm volatile ("mov.l r8, @(0, %0)\n\t"
"mov.l r9, @(4, %0)\n\t"
"mov.l r10, @(8, %0)\n\t"
"mov.l r11, @(12, %0)\n\t"
"mov.l r12, @(16, %0)\n\t"
"mov.l r13, @(20, %0)\n\t"
"mov.l r14, @(24, %0)\n\t"
"mov.l r15, @(28, %0)\n\t"
"stc sr, r0\n\t"
"mov.l r0, @(32, %0)\n\t"
"stc gbr, r0\n\t"
"mov.l r0, @(36, %0)\n\t"
"sts pr, r0\n\t"
"mov.l r0, @(40, %0)" :: "r" (addr));
unsigned int tmp;
asm volatile ("mov.l r8, @(0, %1)\n\t"
"mov.l r9, @(4, %1)\n\t"
"mov.l r10, @(8, %1)\n\t"
"mov.l r11, @(12, %1)\n\t"
"mov.l r12, @(16, %1)\n\t"
"mov.l r13, @(20, %1)\n\t"
"mov.l r14, @(24, %1)\n\t"
"mov.l r15, @(28, %1)\n\t"
"stc sr, %0\n\t"
"mov.l %0, @(32, %1)\n\t"
"stc gbr, %0\n\t"
"mov.l %0, @(36, %1)\n\t"
"sts pr, %0\n\t"
"mov.l %0, @(40, %1)" : "=r&" (tmp) : "r" (addr));
}
/*---------------------------------------------------------------------------
@ -68,21 +70,23 @@ static inline void stctx(void* addr)
*/
static inline void ldctx(void* addr)
{
asm volatile ("mov.l @(0, %0), r8\n\t"
"mov.l @(4, %0), r9\n\t"
"mov.l @(8, %0), r10\n\t"
"mov.l @(12, %0), r11\n\t"
"mov.l @(16, %0), r12\n\t"
"mov.l @(20, %0), r13\n\t"
"mov.l @(24, %0), r14\n\t"
"mov.l @(28, %0), r15\n\t"
"mov.l @(32, %0), r0\n\t"
"ldc r0, sr\n\t"
"mov.l @(36, %0), r0\n\t"
"ldc r0, gbr\n\t"
"mov.l @(40, %0), r0\n\t"
"lds r0, pr\n\t"
"mov.l r0, @(0, r15)" :: "r" (addr));
unsigned int tmp;
asm volatile ("mov.l @(0, %1), r8\n\t"
"mov.l @(4, %1), r9\n\t"
"mov.l @(8, %1), r10\n\t"
"mov.l @(12, %1), r11\n\t"
"mov.l @(16, %1), r12\n\t"
"mov.l @(20, %1), r13\n\t"
"mov.l @(24, %1), r14\n\t"
"mov.l @(28, %1), r15\n\t"
"mov.l @(32, %1), r0\n\t"
"ldc %0, sr\n\t"
"mov.l @(36, %1), %0\n\t"
"ldc %0, gbr\n\t"
"mov.l @(40, %1), %0\n\t"
"lds %0, pr\n\t"
"mov.l %0, @(0, r15)" : "=r&" (tmp) : "r" (addr));
}
/*---------------------------------------------------------------------------