1#include <stdio.h>
  2#include <stdlib.h>
  3#include <string.h>
  4#include "event-parse.h"
  5
  6#define __HYPERVISOR_set_trap_table			0
  7#define __HYPERVISOR_mmu_update				1
  8#define __HYPERVISOR_set_gdt				2
  9#define __HYPERVISOR_stack_switch			3
 10#define __HYPERVISOR_set_callbacks			4
 11#define __HYPERVISOR_fpu_taskswitch			5
 12#define __HYPERVISOR_sched_op_compat			6
 13#define __HYPERVISOR_dom0_op				7
 14#define __HYPERVISOR_set_debugreg			8
 15#define __HYPERVISOR_get_debugreg			9
 16#define __HYPERVISOR_update_descriptor			10
 17#define __HYPERVISOR_memory_op				12
 18#define __HYPERVISOR_multicall				13
 19#define __HYPERVISOR_update_va_mapping			14
 20#define __HYPERVISOR_set_timer_op			15
 21#define __HYPERVISOR_event_channel_op_compat		16
 22#define __HYPERVISOR_xen_version			17
 23#define __HYPERVISOR_console_io				18
 24#define __HYPERVISOR_physdev_op_compat			19
 25#define __HYPERVISOR_grant_table_op			20
 26#define __HYPERVISOR_vm_assist				21
 27#define __HYPERVISOR_update_va_mapping_otherdomain	22
 28#define __HYPERVISOR_iret				23 /* x86 only */
 29#define __HYPERVISOR_vcpu_op				24
 30#define __HYPERVISOR_set_segment_base			25 /* x86/64 only */
 31#define __HYPERVISOR_mmuext_op				26
 32#define __HYPERVISOR_acm_op				27
 33#define __HYPERVISOR_nmi_op				28
 34#define __HYPERVISOR_sched_op				29
 35#define __HYPERVISOR_callback_op			30
 36#define __HYPERVISOR_xenoprof_op			31
 37#define __HYPERVISOR_event_channel_op			32
 38#define __HYPERVISOR_physdev_op				33
 39#define __HYPERVISOR_hvm_op				34
 40#define __HYPERVISOR_tmem_op				38
 41
 42/* Architecture-specific hypercall definitions. */
 43#define __HYPERVISOR_arch_0				48
 44#define __HYPERVISOR_arch_1				49
 45#define __HYPERVISOR_arch_2				50
 46#define __HYPERVISOR_arch_3				51
 47#define __HYPERVISOR_arch_4				52
 48#define __HYPERVISOR_arch_5				53
 49#define __HYPERVISOR_arch_6				54
 50#define __HYPERVISOR_arch_7				55
 51
 52#define N(x)	[__HYPERVISOR_##x] = "("#x")"
 53static const char *xen_hypercall_names[] = {
 54	N(set_trap_table),
 55	N(mmu_update),
 56	N(set_gdt),
 57	N(stack_switch),
 58	N(set_callbacks),
 59	N(fpu_taskswitch),
 60	N(sched_op_compat),
 61	N(dom0_op),
 62	N(set_debugreg),
 63	N(get_debugreg),
 64	N(update_descriptor),
 65	N(memory_op),
 66	N(multicall),
 67	N(update_va_mapping),
 68	N(set_timer_op),
 69	N(event_channel_op_compat),
 70	N(xen_version),
 71	N(console_io),
 72	N(physdev_op_compat),
 73	N(grant_table_op),
 74	N(vm_assist),
 75	N(update_va_mapping_otherdomain),
 76	N(iret),
 77	N(vcpu_op),
 78	N(set_segment_base),
 79	N(mmuext_op),
 80	N(acm_op),
 81	N(nmi_op),
 82	N(sched_op),
 83	N(callback_op),
 84	N(xenoprof_op),
 85	N(event_channel_op),
 86	N(physdev_op),
 87	N(hvm_op),
 88
 89/* Architecture-specific hypercall definitions. */
 90	N(arch_0),
 91	N(arch_1),
 92	N(arch_2),
 93	N(arch_3),
 94	N(arch_4),
 95	N(arch_5),
 96	N(arch_6),
 97	N(arch_7),
 98};
 99#undef N
100
101#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
102
103static const char *xen_hypercall_name(unsigned op)
104{
105	if (op < ARRAY_SIZE(xen_hypercall_names) &&
106	    xen_hypercall_names[op] != NULL)
107		return xen_hypercall_names[op];
108
109	return "";
110}
111
112unsigned long long process_xen_hypercall_name(struct trace_seq *s,
113					      unsigned long long *args)
114{
115	unsigned int op = args[0];
116
117	trace_seq_printf(s, "%s", xen_hypercall_name(op));
118	return 0;
119}
120
121int PEVENT_PLUGIN_LOADER(struct pevent *pevent)
122{
123	pevent_register_print_function(pevent,
124				       process_xen_hypercall_name,
125				       PEVENT_FUNC_ARG_STRING,
126				       "xen_hypercall_name",
127				       PEVENT_FUNC_ARG_INT,
128				       PEVENT_FUNC_ARG_VOID);
129	return 0;
130}
131
132void PEVENT_PLUGIN_UNLOADER(struct pevent *pevent)
133{
134	pevent_unregister_print_function(pevent, process_xen_hypercall_name,
135					 "xen_hypercall_name");
136}