2  * (C) Copyright 2008-2011
8  * Portions of this file are derived from the Linux kernel source
11  * SPDX-License-Identifier:	GPL-2.0+
21 #include <asm/processor-flags.h>
50 	"x87 FPU Floating-Point Error",
53 	"SIMD Floating-Point Exception",
80 	switch (regs->irq_id) {  in dump_regs()
88 		cs = regs->context.ctx2.xcs;  in dump_regs()
89 		eip = regs->context.ctx2.eip;  in dump_regs()
90 		eflags = regs->context.ctx2.eflags;  in dump_regs()
92 		regs->esp += 4;  in dump_regs()
95 		cs = regs->context.ctx1.xcs;  in dump_regs()
96 		eip = regs->context.ctx1.eip;  in dump_regs()
97 		eflags = regs->context.ctx1.eflags;  in dump_regs()
103 	if (gd->flags & GD_FLG_RELOC)  in dump_regs()
104 		printf("Original EIP :[<%08lx>]\n", eip - gd->reloc_off);  in dump_regs()
107 		regs->eax, regs->ebx, regs->ecx, regs->edx);  in dump_regs()
109 		regs->esi, regs->edi, regs->ebp, regs->esp);  in dump_regs()
111 	       (u16)regs->xds, (u16)regs->xes, (u16)regs->xfs,  in dump_regs()
112 	       (u16)regs->xgs, (u16)regs->xss);  in dump_regs()
136 	sp = regs->esp;  in dump_regs()
140 	while (sp > (regs->esp - 16)) {  in dump_regs()
141 		if (sp == regs->esp)  in dump_regs()
142 			printf("--->");  in dump_regs()
146 		sp -= 4;  in dump_regs()
152 	printf("%s\n", exceptions[regs->irq_id]);  in do_exception()
197 	int irq_entry_size = irq_1 - irq_0;  in cpu_init_interrupts()
209 	idt_ptr.size = 256 * 8 - 1;  in cpu_init_interrupts()
237 #if CONFIG_IS_ENABLED(X86_64)  in disable_interrupts()
252 	if (ret && ret != -ENODEV)  in interrupt_init()
286 /* IRQ Low-Level Service Routine */
291 	 * Intel® 64 and IA-32 Architectures Software Developer's Manual  in irq_llsr()
293 	 * Order Number: 253665-029US, November 2008  in irq_llsr()
294 	 * Table 6-1. Exceptions and Interrupts  in irq_llsr()
296 	if (regs->irq_id < 32) {  in irq_llsr()
301 		do_irq(regs->irq_id);  in irq_llsr()
306  * OK - This looks really horrible, but it serves a purpose - It helps create
308  *  - The call to irq_llsr will be a relative jump
309  *  - The IRQ entries will be guaranteed to be in order
315  *  - Interrupt has caused eflags, CS and EIP to be pushed
316  *  - Interrupt Vector Handler has pushed orig_eax
317  *  - pt_regs.esp needs to be adjusted by 40 bytes: