^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /* SPDX-License-Identifier: GPL-2.0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) #ifndef __ASM_SPARC_SYSCALL_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) #define __ASM_SPARC_SYSCALL_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) #include <uapi/linux/audit.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #include <linux/compat.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <linux/sched.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <asm/ptrace.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <asm/thread_info.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) * The syscall table always contains 32 bit pointers since we know that the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) * address of the function to be called is (way) below 4GB. So the "int"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) * type here is what we want [need] for both 32 bit and 64 bit systems.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) extern const unsigned int sys_call_table[];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) /* The system call number is given by the user in %g1 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) static inline long syscall_get_nr(struct task_struct *task,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) struct pt_regs *regs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) int syscall_p = pt_regs_is_syscall(regs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) return (syscall_p ? regs->u_regs[UREG_G1] : -1L);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) static inline void syscall_rollback(struct task_struct *task,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) struct pt_regs *regs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) /* XXX This needs some thought. On Sparc we don't
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) * XXX save away the original %o0 value somewhere.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) * XXX Instead we hold it in register %l5 at the top
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) * XXX level trap frame and pass this down to the signal
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) * XXX dispatch code which is the only place that value
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) * XXX ever was needed.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) #ifdef CONFIG_SPARC32
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) static inline bool syscall_has_error(struct pt_regs *regs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) return (regs->psr & PSR_C) ? true : false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) static inline void syscall_set_error(struct pt_regs *regs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) regs->psr |= PSR_C;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) static inline void syscall_clear_error(struct pt_regs *regs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) regs->psr &= ~PSR_C;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) static inline bool syscall_has_error(struct pt_regs *regs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) return (regs->tstate & (TSTATE_XCARRY | TSTATE_ICARRY)) ? true : false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) static inline void syscall_set_error(struct pt_regs *regs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) regs->tstate |= (TSTATE_XCARRY | TSTATE_ICARRY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) static inline void syscall_clear_error(struct pt_regs *regs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) regs->tstate &= ~(TSTATE_XCARRY | TSTATE_ICARRY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) static inline long syscall_get_error(struct task_struct *task,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) struct pt_regs *regs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) long val = regs->u_regs[UREG_I0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) return (syscall_has_error(regs) ? -val : 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) static inline long syscall_get_return_value(struct task_struct *task,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) struct pt_regs *regs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) long val = regs->u_regs[UREG_I0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) return val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) static inline void syscall_set_return_value(struct task_struct *task,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) struct pt_regs *regs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) int error, long val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) syscall_set_error(regs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) regs->u_regs[UREG_I0] = -error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) syscall_clear_error(regs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) regs->u_regs[UREG_I0] = val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) static inline void syscall_get_arguments(struct task_struct *task,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) struct pt_regs *regs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) unsigned long *args)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) int zero_extend = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) unsigned int j;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) unsigned int n = 6;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) #ifdef CONFIG_SPARC64
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) if (test_tsk_thread_flag(task, TIF_32BIT))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) zero_extend = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) for (j = 0; j < n; j++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) unsigned long val = regs->u_regs[UREG_I0 + j];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) if (zero_extend)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) args[j] = (u32) val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) args[j] = val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) static inline void syscall_set_arguments(struct task_struct *task,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) struct pt_regs *regs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) const unsigned long *args)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) unsigned int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) for (i = 0; i < 6; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) regs->u_regs[UREG_I0 + i] = args[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) static inline int syscall_get_arch(struct task_struct *task)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) #if defined(CONFIG_SPARC64) && defined(CONFIG_COMPAT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) return test_tsk_thread_flag(task, TIF_32BIT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) ? AUDIT_ARCH_SPARC : AUDIT_ARCH_SPARC64;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) #elif defined(CONFIG_SPARC64)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) return AUDIT_ARCH_SPARC64;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) return AUDIT_ARCH_SPARC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) #endif /* __ASM_SPARC_SYSCALL_H */
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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