Commit cf52c468352993ca420fe0b4ada976dc1f614026
1 parent
324f40fbb0
Exists in
master
and in
4 other branches
score: add old syscall support
Showing 3 changed files with 40 additions and 2 deletions Side-by-side Diff
arch/score/include/asm/unistd.h
| ... | ... | @@ -3,6 +3,11 @@ |
| 3 | 3 | |
| 4 | 4 | #define __ARCH_HAVE_MMU |
| 5 | 5 | |
| 6 | +#define __ARCH_WANT_SYSCALL_NO_AT | |
| 7 | +#define __ARCH_WANT_SYSCALL_NO_FLAGS | |
| 8 | +#define __ARCH_WANT_SYSCALL_OFF_T | |
| 9 | +#define __ARCH_WANT_SYSCALL_DEPRECATED | |
| 10 | + | |
| 6 | 11 | #include <asm-generic/unistd.h> |
| 7 | 12 | |
| 8 | 13 | #endif /* _ASM_SCORE_UNISTD_H */ |
arch/score/kernel/entry.S
| ... | ... | @@ -499,4 +499,16 @@ |
| 499 | 499 | mv r4, r0 |
| 500 | 500 | la r8, score_sigaltstack |
| 501 | 501 | br r8 |
| 502 | + | |
| 503 | +#ifdef __ARCH_WANT_SYSCALL_DEPRECATED | |
| 504 | +ENTRY(sys_fork) | |
| 505 | + mv r4, r0 | |
| 506 | + la r8, score_fork | |
| 507 | + br r8 | |
| 508 | + | |
| 509 | +ENTRY(sys_vfork) | |
| 510 | + mv r4, r0 | |
| 511 | + la r8, score_vfork | |
| 512 | + br r8 | |
| 513 | +#endif /* __ARCH_WANT_SYSCALL_DEPRECATED */ |
arch/score/kernel/sys_score.c
| ... | ... | @@ -25,6 +25,7 @@ |
| 25 | 25 | |
| 26 | 26 | #include <linux/file.h> |
| 27 | 27 | #include <linux/fs.h> |
| 28 | +#include <linux/mm.h> | |
| 28 | 29 | #include <linux/mman.h> |
| 29 | 30 | #include <linux/module.h> |
| 30 | 31 | #include <linux/unistd.h> |
| ... | ... | @@ -49,8 +50,7 @@ |
| 49 | 50 | } |
| 50 | 51 | |
| 51 | 52 | down_write(¤t->mm->mmap_sem); |
| 52 | - error = do_mmap_pgoff(file, addr, len, prot, flags, | |
| 53 | - pgoff >> (PAGE_SHIFT - 12)); | |
| 53 | + error = do_mmap_pgoff(file, addr, len, prot, flags, pgoff); | |
| 54 | 54 | up_write(¤t->mm->mmap_sem); |
| 55 | 55 | |
| 56 | 56 | if (file) |
| ... | ... | @@ -59,6 +59,19 @@ |
| 59 | 59 | return error; |
| 60 | 60 | } |
| 61 | 61 | |
| 62 | +asmlinkage long | |
| 63 | +sys_mmap(unsigned long addr, unsigned long len, unsigned long prot, | |
| 64 | + unsigned long flags, unsigned long fd, off_t pgoff) | |
| 65 | +{ | |
| 66 | + return sys_mmap2(addr, len, prot, flags, fd, pgoff >> PAGE_SHIFT); | |
| 67 | +} | |
| 68 | + | |
| 69 | +asmlinkage long | |
| 70 | +score_fork(struct pt_regs *regs) | |
| 71 | +{ | |
| 72 | + return do_fork(SIGCHLD, regs->regs[0], regs, 0, NULL, NULL); | |
| 73 | +} | |
| 74 | + | |
| 62 | 75 | /* |
| 63 | 76 | * Clone a task - this clones the calling program thread. |
| 64 | 77 | * This is called indirectly via a small wrapper |
| ... | ... | @@ -79,6 +92,13 @@ |
| 79 | 92 | |
| 80 | 93 | return do_fork(clone_flags, newsp, regs, 0, |
| 81 | 94 | parent_tidptr, child_tidptr); |
| 95 | +} | |
| 96 | + | |
| 97 | +asmlinkage long | |
| 98 | +score_vfork(struct pt_regs *regs) | |
| 99 | +{ | |
| 100 | + return do_fork(CLONE_VFORK | CLONE_VM | SIGCHLD, | |
| 101 | + regs->regs[0], regs, 0, NULL, NULL); | |
| 82 | 102 | } |
| 83 | 103 | |
| 84 | 104 | /* |