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author | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2013-01-07 23:09:09 +0000 |
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committer | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2013-01-07 23:09:09 +0000 |
commit | 5a9162f017e457a5415eb0af7c41a7ef49d355c6 (patch) | |
tree | df113f8f8e95d7326b9831be017b99c4bc10b9c1 /nuttx/arch | |
parent | 66cdd288ab6a4d19c67300a73a26e9ee5a958187 (diff) | |
download | px4-firmware-5a9162f017e457a5415eb0af7c41a7ef49d355c6.tar.gz px4-firmware-5a9162f017e457a5415eb0af7c41a7ef49d355c6.tar.bz2 px4-firmware-5a9162f017e457a5415eb0af7c41a7ef49d355c6.zip |
Disable the vfork() OS test... it fails
git-svn-id: http://svn.code.sf.net/p/nuttx/code/trunk@5489 42af7a65-404d-4744-a932-0658087f49c3
Diffstat (limited to 'nuttx/arch')
-rw-r--r-- | nuttx/arch/arm/src/common/up_vfork.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/nuttx/arch/arm/src/common/up_vfork.c b/nuttx/arch/arm/src/common/up_vfork.c index 2e3c2d4a1..3da602679 100644 --- a/nuttx/arch/arm/src/common/up_vfork.c +++ b/nuttx/arch/arm/src/common/up_vfork.c @@ -169,7 +169,11 @@ pid_t up_vfork(struct vfork_s *context) return (pid_t)ERROR; } - /* How much of the parent's stack was utilized? */ + /* How much of the parent's stack was utilized? The ARM uses + * a push-down stack so that the current stack pointer should + * be lower than the initial, adjusted stack pointer. The + * stack usage should be the difference between those two. + */ DEBUGASSERT((uint32_t)parent->adj_stack_ptr > context->sp); stackutil = (uint32_t)parent->adj_stack_ptr - context->sp; @@ -177,7 +181,7 @@ pid_t up_vfork(struct vfork_s *context) svdbg("stacksize:%d stackutil:%d\n", stacksize, stackutil); /* Make some feeble effort to perserve the stack contents. This is - * feeble because the stack surely contains invalid pointer and other + * feeble because the stack surely contains invalid pointers and other * content that will not work in the child context. However, if the * user follows all of the caveats of vfor() usage, even this feeble * effort is overkill. @@ -204,7 +208,7 @@ pid_t up_vfork(struct vfork_s *context) svdbg("New stack base:%08x SP:%08x FP:%08x\n", child->adj_stack_ptr, newsp, newfp); - /* Update the stack pointer, frame pointer, and voltile registers. When + /* Update the stack pointer, frame pointer, and voltile registers. When * the child TCB was initialized, all of the values were set to zero. * up_initial_state() altered a few values, but the return value in R0 * should be cleared to zero, providing the indication to the newly started |