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| author | Clyne Sullivan <clyne@bitgloo.com> | 2020-01-24 09:15:46 -0500 |
|---|---|---|
| committer | Clyne Sullivan <clyne@bitgloo.com> | 2020-01-24 09:15:46 -0500 |
| commit | a5892b35233748b2fcff1f726314c9a8df749f9c (patch) | |
| tree | a666f7f73b8926b2518b578b9416209395908a6e /src/kernel/svc.c | |
| parent | 998b3ac86e3b3f926d81e768f1200815e9e3d148 (diff) | |
Reviewed stmos, made small format/doc fixes
Diffstat (limited to 'src/kernel/svc.c')
| -rw-r--r-- | src/kernel/svc.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/src/kernel/svc.c b/src/kernel/svc.c index 7c81e5f..358fa3d 100644 --- a/src/kernel/svc.c +++ b/src/kernel/svc.c @@ -31,6 +31,7 @@ extern void vfs_svc(uint32_t, uint32_t *, uint32_t *args); void SVC_Handler(void) { uint32_t *stack; + // Get the appropriate stack (either kernel or process) asm("\ tst lr, #4; \ ite eq; \ @@ -44,13 +45,13 @@ void SVC_Handler(void) { uint32_t *args = (uint32_t *)stack[2]; switch (svc_number) { - case -1: + case -1: // TODO why? case 0: /* Task-related calls * 0 - _exit * 1 - fork * 2 - getpid * 3 - waitpid - * 4 - sbrk (TODO bad) + * 4 - sbrk (TODO poor implementation) * 5 - execve */ task_svc(min_number, ret, args); |