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uti: Replace data types represented as arrays with C structures

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Defining C structures for the following objects:
(1) Remote and local context
(2) Stack of system call arguments / return values

Change-Id: Iafbb6c795bd765e3c78c54a255d8a1e4d4536288
This commit is contained in:
Masamichi Takagi
2018-09-03 18:20:00 +09:00
parent 04d4145b3e
commit 781a69617b
12 changed files with 215 additions and 188 deletions
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9
executer/include/uti.h
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@ -8,17 +8,20 @@ struct syscall_struct {
unsigned long uti_clv; /* copy of a clv in McKernel */
};
#define UTI_SZ_SYSCALL_STACK 16
/* Variables accessed by mcexec.c and syscall_intercept.c */
struct uti_desc {
void *wp; /* Syscall arguments list and record of McKernel context and Linux context */
char lctx[4096]; /* TODO: Get the size from config.h */
char rctx[4096]; /* TODO: Get the size from config.h */
int mck_tid; /* TODO: Move this out for multiple migrated-to-Linux threads */
unsigned long key; /* struct task_struct* of mcexec thread, used to search struct host_thread */
int pid, tid; /* Used as the id of tracee when issuing MCEXEC_UP_TERMINATE_THREAD */
unsigned long uti_clv; /* copy of McKernel clv */
int fd; /* /dev/mcosX */
struct syscall_struct *syscall_param_top; /* stack-pointer of syscall arguments list */
struct syscall_struct *syscall_param; /* TODO: make it auto variable */
struct syscall_struct syscall_stack[UTI_SZ_SYSCALL_STACK]; /* stack of system call arguments and return values */
int syscall_stack_top; /* stack-pointer of syscall arguments list */
long syscalls[512], syscalls2[512]; /* Syscall profile counters */
int start_syscall_intercept; /* Used to sync between mcexec.c and syscall_intercept.c */
};