LinehuandCursor
737a2cb0db
Self-test and Linux guest were failing VM-instruction error 7. Share a KVM-style control adjust, request PIN_VIRTUAL_NMIS, and stop intercepting guest #PF. Land isolated XNU/Python/KDE scaffolding off the boot path. Co-authored-by: Cursor <cursoragent@cursor.com>
112 lines
3.4 KiB
C
112 lines
3.4 KiB
C
/* deshab/syscall.h - experimental native syscall ABI
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*
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* This header only reserves numbers and emits the x86_64 SYSCALL instruction.
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* Deshab does not currently install a native syscall entry point or dispatcher.
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* Calling these wrappers on a current image is unsupported and may fault.
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*/
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#ifndef DESHAB_SYSCALL_H
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#define DESHAB_SYSCALL_H
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#include "types.h"
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#define DESHAB_SYSCALL_ABI_MAJOR 1u
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#define DESHAB_SYSCALL_ABI_MINOR 0u
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/*
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* Reserved v1 number ranges:
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* 0x0000-0x001f core
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* 0x0100-0x011f native capability IPC
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* 0x0120-0x013f task/scheduler
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* 0x0140-0x015f memory
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*
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* Values are explicit and must never be renumbered after implementation ships.
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*/
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typedef enum deshab_syscall_number {
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DESHAB_SYS_ABI_QUERY = 0x0000,
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DESHAB_SYS_EXIT = 0x0001,
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DESHAB_SYS_YIELD = 0x0002,
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DESHAB_SYS_CLOCK_MONOTONIC = 0x0003,
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DESHAB_SYS_DEBUG_WRITE = 0x0004,
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DESHAB_SYS_IPC_QUEUE_CREATE = 0x0100,
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DESHAB_SYS_IPC_QUEUE_DESTROY = 0x0101,
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DESHAB_SYS_IPC_SEND = 0x0102,
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DESHAB_SYS_IPC_RECEIVE = 0x0103,
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DESHAB_SYS_IPC_CALL = 0x0104,
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DESHAB_SYS_IPC_REPLY = 0x0105,
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DESHAB_SYS_IPC_WAIT = 0x0106,
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DESHAB_SYS_IPC_SIGNAL = 0x0107,
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DESHAB_SYS_TASK_CREATE = 0x0120,
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DESHAB_SYS_TASK_EXIT = 0x0121,
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DESHAB_SYS_TASK_SET_PRIORITY = 0x0122,
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DESHAB_SYS_TASK_SET_AFFINITY = 0x0123,
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DESHAB_SYS_MEM_MAP = 0x0140,
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DESHAB_SYS_MEM_UNMAP = 0x0141,
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DESHAB_SYS_MEM_PROTECT = 0x0142
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} deshab_syscall_number;
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/*
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* Proposed x86_64 register ABI:
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* RAX = number
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* RDI, RSI, RDX, R10, R8, R9 = arguments 0..5
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* RAX = signed result (negative values are errors)
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* RCX and R11 are destroyed by SYSCALL
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*/
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#if (defined(__x86_64__) || defined(_M_X64)) && \
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(defined(__clang__) || defined(__GNUC__))
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#define DESHAB_SYSCALL_INLINE_AVAILABLE 1
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static inline i64 deshab_syscall6(u64 number, u64 arg0, u64 arg1, u64 arg2,
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u64 arg3, u64 arg4, u64 arg5) {
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register u64 syscall_arg3 __asm__("r10") = arg3;
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register u64 syscall_arg4 __asm__("r8") = arg4;
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register u64 syscall_arg5 __asm__("r9") = arg5;
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u64 result;
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__asm__ volatile(
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"syscall"
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: "=a"(result)
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: "a"(number), "D"(arg0), "S"(arg1), "d"(arg2),
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"r"(syscall_arg3), "r"(syscall_arg4), "r"(syscall_arg5)
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: "rcx", "r11", "memory", "cc");
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return (i64)result;
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}
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static inline i64 deshab_syscall0(u64 number) {
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return deshab_syscall6(number, 0, 0, 0, 0, 0, 0);
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}
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static inline i64 deshab_syscall1(u64 number, u64 arg0) {
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return deshab_syscall6(number, arg0, 0, 0, 0, 0, 0);
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}
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static inline i64 deshab_syscall2(u64 number, u64 arg0, u64 arg1) {
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return deshab_syscall6(number, arg0, arg1, 0, 0, 0, 0);
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}
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static inline i64 deshab_syscall3(u64 number, u64 arg0, u64 arg1, u64 arg2) {
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return deshab_syscall6(number, arg0, arg1, arg2, 0, 0, 0);
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}
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static inline i64 deshab_syscall4(u64 number, u64 arg0, u64 arg1, u64 arg2,
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u64 arg3) {
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return deshab_syscall6(number, arg0, arg1, arg2, arg3, 0, 0);
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}
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static inline i64 deshab_syscall5(u64 number, u64 arg0, u64 arg1, u64 arg2,
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u64 arg3, u64 arg4) {
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return deshab_syscall6(number, arg0, arg1, arg2, arg3, arg4, 0);
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}
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#else
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#define DESHAB_SYSCALL_INLINE_AVAILABLE 0
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#endif
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#endif /* DESHAB_SYSCALL_H */
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