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Diffstat (limited to 'arch/s390/include/asm/syscall_wrapper.h')
-rw-r--r--arch/s390/include/asm/syscall_wrapper.h128
1 files changed, 79 insertions, 49 deletions
diff --git a/arch/s390/include/asm/syscall_wrapper.h b/arch/s390/include/asm/syscall_wrapper.h
index 1320f4213d80..ad2c996e7e93 100644
--- a/arch/s390/include/asm/syscall_wrapper.h
+++ b/arch/s390/include/asm/syscall_wrapper.h
@@ -7,6 +7,33 @@
#ifndef _ASM_S390_SYSCALL_WRAPPER_H
#define _ASM_S390_SYSCALL_WRAPPER_H
+#define __SC_TYPE(t, a) t
+
+#define SYSCALL_PT_ARG6(regs, m, t1, t2, t3, t4, t5, t6)\
+ SYSCALL_PT_ARG5(regs, m, t1, t2, t3, t4, t5), \
+ m(t6, (regs->gprs[7]))
+
+#define SYSCALL_PT_ARG5(regs, m, t1, t2, t3, t4, t5) \
+ SYSCALL_PT_ARG4(regs, m, t1, t2, t3, t4), \
+ m(t5, (regs->gprs[6]))
+
+#define SYSCALL_PT_ARG4(regs, m, t1, t2, t3, t4) \
+ SYSCALL_PT_ARG3(regs, m, t1, t2, t3), \
+ m(t4, (regs->gprs[5]))
+
+#define SYSCALL_PT_ARG3(regs, m, t1, t2, t3) \
+ SYSCALL_PT_ARG2(regs, m, t1, t2), \
+ m(t3, (regs->gprs[4]))
+
+#define SYSCALL_PT_ARG2(regs, m, t1, t2) \
+ SYSCALL_PT_ARG1(regs, m, t1), \
+ m(t2, (regs->gprs[3]))
+
+#define SYSCALL_PT_ARG1(regs, m, t1) \
+ m(t1, (regs->orig_gpr2))
+
+#define SYSCALL_PT_ARGS(x, ...) SYSCALL_PT_ARG##x(__VA_ARGS__)
+
#ifdef CONFIG_COMPAT
#define __SC_COMPAT_TYPE(t, a) \
__typeof(__builtin_choose_expr(sizeof(t) > 4, 0L, (t)0)) a
@@ -29,14 +56,15 @@
(t)__ReS; \
})
-#define __S390_SYS_STUBx(x, name, ...) \
- asmlinkage long __s390_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__));\
- ALLOW_ERROR_INJECTION(__s390_sys##name, ERRNO); \
- asmlinkage long __s390_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__))\
- { \
- long ret = __s390x_sys##name(__MAP(x,__SC_COMPAT_CAST,__VA_ARGS__));\
- __MAP(x,__SC_TEST,__VA_ARGS__); \
- return ret; \
+#define __S390_SYS_STUBx(x, name, ...) \
+ long __s390_sys##name(struct pt_regs *regs); \
+ ALLOW_ERROR_INJECTION(__s390_sys##name, ERRNO); \
+ long __s390_sys##name(struct pt_regs *regs) \
+ { \
+ long ret = __do_sys##name(SYSCALL_PT_ARGS(x, regs, \
+ __SC_COMPAT_CAST, __MAP(x, __SC_TYPE, __VA_ARGS__))); \
+ __MAP(x,__SC_TEST,__VA_ARGS__); \
+ return ret; \
}
/*
@@ -45,17 +73,17 @@
*/
#define COMPAT_SYSCALL_DEFINE0(sname) \
SYSCALL_METADATA(_##sname, 0); \
- asmlinkage long __s390_compat_sys_##sname(void); \
+ long __s390_compat_sys_##sname(void); \
ALLOW_ERROR_INJECTION(__s390_compat_sys_##sname, ERRNO); \
- asmlinkage long __s390_compat_sys_##sname(void)
+ long __s390_compat_sys_##sname(void)
#define SYSCALL_DEFINE0(sname) \
SYSCALL_METADATA(_##sname, 0); \
- asmlinkage long __s390x_sys_##sname(void); \
+ long __s390x_sys_##sname(void); \
ALLOW_ERROR_INJECTION(__s390x_sys_##sname, ERRNO); \
- asmlinkage long __s390_sys_##sname(void) \
+ long __s390_sys_##sname(void) \
__attribute__((alias(__stringify(__s390x_sys_##sname)))); \
- asmlinkage long __s390x_sys_##sname(void)
+ long __s390x_sys_##sname(void)
#define COND_SYSCALL(name) \
cond_syscall(__s390x_sys_##name); \
@@ -65,23 +93,24 @@
SYSCALL_ALIAS(__s390x_sys_##name, sys_ni_posix_timers); \
SYSCALL_ALIAS(__s390_sys_##name, sys_ni_posix_timers)
-#define COMPAT_SYSCALL_DEFINEx(x, name, ...) \
- __diag_push(); \
- __diag_ignore(GCC, 8, "-Wattribute-alias", \
- "Type aliasing is used to sanitize syscall arguments");\
- asmlinkage long __s390_compat_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)); \
- asmlinkage long __s390_compat_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)) \
- __attribute__((alias(__stringify(__se_compat_sys##name)))); \
- ALLOW_ERROR_INJECTION(__s390_compat_sys##name, ERRNO); \
- static inline long __do_compat_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__));\
- asmlinkage long __se_compat_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__)); \
- asmlinkage long __se_compat_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__)) \
- { \
- long ret = __do_compat_sys##name(__MAP(x,__SC_DELOUSE,__VA_ARGS__));\
- __MAP(x,__SC_TEST,__VA_ARGS__); \
- return ret; \
- } \
- __diag_pop(); \
+#define COMPAT_SYSCALL_DEFINEx(x, name, ...) \
+ __diag_push(); \
+ __diag_ignore(GCC, 8, "-Wattribute-alias", \
+ "Type aliasing is used to sanitize syscall arguments"); \
+ long __s390_compat_sys##name(struct pt_regs *regs); \
+ long __s390_compat_sys##name(struct pt_regs *regs) \
+ __attribute__((alias(__stringify(__se_compat_sys##name)))); \
+ ALLOW_ERROR_INJECTION(__s390_compat_sys##name, ERRNO); \
+ static inline long __do_compat_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)); \
+ long __se_compat_sys##name(struct pt_regs *regs); \
+ long __se_compat_sys##name(struct pt_regs *regs) \
+ { \
+ long ret = __do_compat_sys##name(SYSCALL_PT_ARGS(x, regs, __SC_DELOUSE, \
+ __MAP(x, __SC_TYPE, __VA_ARGS__))); \
+ __MAP(x,__SC_TEST,__VA_ARGS__); \
+ return ret; \
+ } \
+ __diag_pop(); \
static inline long __do_compat_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__))
/*
@@ -101,9 +130,9 @@
#define SYSCALL_DEFINE0(sname) \
SYSCALL_METADATA(_##sname, 0); \
- asmlinkage long __s390x_sys_##sname(void); \
+ long __s390x_sys_##sname(void); \
ALLOW_ERROR_INJECTION(__s390x_sys_##sname, ERRNO); \
- asmlinkage long __s390x_sys_##sname(void)
+ long __s390x_sys_##sname(void)
#define COND_SYSCALL(name) \
cond_syscall(__s390x_sys_##name)
@@ -113,23 +142,24 @@
#endif /* CONFIG_COMPAT */
-#define __SYSCALL_DEFINEx(x, name, ...) \
- __diag_push(); \
- __diag_ignore(GCC, 8, "-Wattribute-alias", \
- "Type aliasing is used to sanitize syscall arguments");\
- asmlinkage long __s390x_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)) \
- __attribute__((alias(__stringify(__se_sys##name)))); \
- ALLOW_ERROR_INJECTION(__s390x_sys##name, ERRNO); \
- long __se_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__)); \
- static inline long __do_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)); \
- __S390_SYS_STUBx(x, name, __VA_ARGS__) \
- asmlinkage long __se_sys##name(__MAP(x,__SC_LONG,__VA_ARGS__)) \
- { \
- long ret = __do_sys##name(__MAP(x,__SC_CAST,__VA_ARGS__)); \
- __MAP(x,__SC_TEST,__VA_ARGS__); \
- return ret; \
- } \
- __diag_pop(); \
+#define __SYSCALL_DEFINEx(x, name, ...) \
+ __diag_push(); \
+ __diag_ignore(GCC, 8, "-Wattribute-alias", \
+ "Type aliasing is used to sanitize syscall arguments"); \
+ long __s390x_sys##name(struct pt_regs *regs) \
+ __attribute__((alias(__stringify(__se_sys##name)))); \
+ ALLOW_ERROR_INJECTION(__s390x_sys##name, ERRNO); \
+ static inline long __do_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)); \
+ long __se_sys##name(struct pt_regs *regs); \
+ __S390_SYS_STUBx(x, name, __VA_ARGS__) \
+ long __se_sys##name(struct pt_regs *regs) \
+ { \
+ long ret = __do_sys##name(SYSCALL_PT_ARGS(x, regs, \
+ __SC_CAST, __MAP(x, __SC_TYPE, __VA_ARGS__))); \
+ __MAP(x,__SC_TEST,__VA_ARGS__); \
+ return ret; \
+ } \
+ __diag_pop(); \
static inline long __do_sys##name(__MAP(x,__SC_DECL,__VA_ARGS__))
#endif /* _ASM_X86_SYSCALL_WRAPPER_H */
generated by cgit v1.2.3 (git 2.39.1) at 2025-01-06 02:46:52 +0000