include/asm/idtentry.h

1 /* SPDX-License-Identifier: GPL-2.0 */
9 #include <linux/entry-common.h>
18  * DECLARE_IDTENTRY - Declare functions for simple IDT entry points
21  * @func:	Function name of the entry point
24  * - The ASM entry point: asm_##func
25  * - The XEN PV trap entry point: xen_##func (maybe unused)
26  * - The C handler called from the ASM entry point
30  * as well which is used to emit the entry stubs in entry_32/64.S.
38  * DEFINE_IDTENTRY - Emit code for simple IDT entry points
39  * @func:	Function name of the entry point
46  * irqentry_enter() contains common code which has to be invoked before
48  * which has to run before returning to the low level assembly code.
70  * DECLARE_IDTENTRY_ERRORCODE - Declare functions for simple IDT entry points
73  * @func:	Function name of the entry point
76  * - The ASM entry point: asm_##func
77  * - The XEN PV trap entry point: xen_##func (maybe unused)
78  * - The C handler called from the ASM entry point
81  * C-handler.
89  * DEFINE_IDTENTRY_ERRORCODE - Emit code for simple IDT entry points
91  * @func:	Function name of the entry point
114  * DECLARE_IDTENTRY_RAW - Declare functions for raw IDT entry points
117  * @func:	Function name of the entry point
119  * Maps to DECLARE_IDTENTRY().
125  * DEFINE_IDTENTRY_RAW - Emit code for raw IDT entry points
126  * @func:	Function name of the entry point
133  * Contrary to DEFINE_IDTENTRY() this does not invoke the
135  * needs to be done in the body itself if applicable. Use if extra work
142  * DECLARE_IDTENTRY_RAW_ERRORCODE - Declare functions for raw IDT entry points
145  * @func:	Function name of the entry point
147  * Maps to DECLARE_IDTENTRY_ERRORCODE()
153  * DEFINE_IDTENTRY_RAW_ERRORCODE - Emit code for raw IDT entry points
154  * @func:	Function name of the entry point
161  * Contrary to DEFINE_IDTENTRY_ERRORCODE() this does not invoke the
163  * needs to be done in the body itself if applicable. Use if extra work
170  * DECLARE_IDTENTRY_IRQ - Declare functions for device interrupt IDT entry
173  * @func:	Function name of the entry point
175  * Maps to DECLARE_IDTENTRY_ERRORCODE()
181  * DEFINE_IDTENTRY_IRQ - Emit code for device interrupt IDT entry points
182  * @func:	Function name of the entry point
185  * to the function as error_code argument which needs to be truncated
186  * to an u8 because the push is sign extending.
189  * KVM L1D flush request is set. Stack switching to the interrupt stack
190  * has to be done in the function body if necessary.
212  * DECLARE_IDTENTRY_SYSVEC - Declare functions for system vector entry points
214  * @func:	Function name of the entry point
217  * - The ASM entry point: asm_##func
218  * - The XEN PV trap entry point: xen_##func (maybe unused)
219  * - The C handler called from the ASM entry point
221  * Maps to DECLARE_IDTENTRY().
227  * DEFINE_IDTENTRY_SYSVEC - Emit code for system vector IDT entry points
228  * @func:	Function name of the entry point
254  * DEFINE_IDTENTRY_SYSVEC_SIMPLE - Emit code for simple system vector IDT
256  * @func:	Function name of the entry point
258  * Runs the function on the interrupted stack. No switch to IRQ stack and
283  * DECLARE_IDTENTRY_XENCB - Declare functions for XEN HV callback entry point
285  * @func:	Function name of the entry point
288  * - The ASM entry point: asm_##func
289  * - The XEN PV trap entry point: xen_##func (maybe unused)
290  * - The C handler called from the ASM entry point
292  * Maps to DECLARE_IDTENTRY(). Distinct entry point to handle the 32/64-bit
300  * DECLARE_IDTENTRY_IST - Declare functions for IST handling IDT entry points
302  * @func:	Function name of the entry point
304  * Maps to DECLARE_IDTENTRY_RAW, but declares also the NOIST C handler
305  * which is called from the ASM entry point on user mode entry
312  * DECLARE_IDTENTRY_VC - Declare functions for the VC entry point
314  * @func:	Function name of the entry point
316  * Maps to DECLARE_IDTENTRY_RAW_ERRORCODE, but declares also the
325  * DEFINE_IDTENTRY_IST - Emit code for IST entry points
326  * @func:	Function name of the entry point
328  * Maps to DEFINE_IDTENTRY_RAW
334  * DEFINE_IDTENTRY_NOIST - Emit code for NOIST entry points which
335  *			   belong to a IST entry point (MCE, DB)
336  * @func:	Function name of the entry point. Must be the same as
339  * Maps to DEFINE_IDTENTRY_RAW().
345  * DECLARE_IDTENTRY_DF - Declare functions for double fault
347  * @func:	Function name of the entry point
349  * Maps to DECLARE_IDTENTRY_RAW_ERRORCODE
355  * DEFINE_IDTENTRY_DF - Emit code for double fault
356  * @func:	Function name of the entry point
358  * Maps to DEFINE_IDTENTRY_RAW_ERRORCODE
364  * DEFINE_IDTENTRY_VC_SAFE_STACK - Emit code for VMM communication handler
366  * @func:	Function name of the entry point
368  * Maps to DEFINE_IDTENTRY_RAW_ERRORCODE
374  * DEFINE_IDTENTRY_VC_IST - Emit code for VMM communication handler
375 			    which runs on the VC fall-back stack
376  * @func:	Function name of the entry point
378  * Maps to DEFINE_IDTENTRY_RAW_ERRORCODE
384  * DEFINE_IDTENTRY_VC - Emit code for VMM communication handler
385  * @func:	Function name of the entry point
387  * Maps to DEFINE_IDTENTRY_RAW_ERRORCODE
395  * DECLARE_IDTENTRY_DF - Declare functions for double fault 32bit variant
397  * @func:	Function name of the entry point
400  * - The ASM entry point: asm_##func
401  * - The C handler called from the C shim
410  * DEFINE_IDTENTRY_DF - Emit code for double fault on 32bit
411  * @func:	Function name of the entry point
423 /* C-Code mapping */
497  * ASM code to emit the common vector entry stubs where each stub is
502  * all vectors above 0x7F to a 5 byte push. The original code did an
503  * adjustment of the vector number to be in the signed byte range to avoid
505  * odd conversion back to a real vector number in the C entry points. Using
507  * point is to mask off the bits above bit 7 because the push is sign
513     .rept (FIRST_SYSTEM_VECTOR - FIRST_EXTERNAL_VECTOR)
529     .rept (NR_VECTORS - FIRST_SYSTEM_VECTOR)
547  *  - provide the function declarations when included from C-Code
548  *  - emit the ASM stubs when included from entry_32/64.S