7  *   See the COPYING file in the top-level directory.
16 #include <qemu-plugin.h>
61     GString *s = c->last_exec;  in vcpu_mem()
92     for (int n = 0; n < cpu->registers->len; n++) {  in insn_check_regs()
93         Register *reg = cpu->registers->pdata[n];  in insn_check_regs()
96         g_byte_array_set_size(reg->new, 0);  in insn_check_regs()
97         sz = qemu_plugin_read_register(reg->handle, reg->new);  in insn_check_regs()
98         g_assert(sz == reg->last->len);  in insn_check_regs()
100         if (memcmp(reg->last->data, reg->new->data, sz)) {  in insn_check_regs()
101             GByteArray *temp = reg->last;  in insn_check_regs()
102             g_string_append_printf(cpu->last_exec, ", %s -> 0x", reg->name);  in insn_check_regs()
104             for (int i = sz - 1; i >= 0; i--) {  in insn_check_regs()
105                 g_string_append_printf(cpu->last_exec, "%02x",  in insn_check_regs()
106                                        reg->new->data[i]);  in insn_check_regs()
108             reg->last = reg->new;  in insn_check_regs()
109             reg->new = temp;  in insn_check_regs()
119     /* Print previous instruction in cache */  in vcpu_insn_exec_with_regs()
120     if (cpu->last_exec->len) {  in vcpu_insn_exec_with_regs()
121         if (cpu->registers) {  in vcpu_insn_exec_with_regs()
125         qemu_plugin_outs(cpu->last_exec->str);  in vcpu_insn_exec_with_regs()
129     /* Store new instruction in cache */  in vcpu_insn_exec_with_regs()
131     g_string_printf(cpu->last_exec, "%u, ", cpu_index);  in vcpu_insn_exec_with_regs()
132     g_string_append(cpu->last_exec, (char *)udata);  in vcpu_insn_exec_with_regs()
135 /* Log last instruction while checking registers, ignore next */
140     /* Print previous instruction in cache */  in vcpu_insn_exec_only_regs()
141     if (cpu->last_exec->len) {  in vcpu_insn_exec_only_regs()
142         if (cpu->registers) {  in vcpu_insn_exec_only_regs()
146         qemu_plugin_outs(cpu->last_exec->str);  in vcpu_insn_exec_only_regs()
151     cpu->last_exec->len = 0;  in vcpu_insn_exec_only_regs()
154 /* Log last instruction without checking regs, setup next */
159     /* Print previous instruction in cache */  in vcpu_insn_exec()
160     if (cpu->last_exec->len) {  in vcpu_insn_exec()
161         qemu_plugin_outs(cpu->last_exec->str);  in vcpu_insn_exec()
165     /* Store new instruction in cache */  in vcpu_insn_exec()
167     g_string_printf(cpu->last_exec, "%u, ", cpu_index);  in vcpu_insn_exec()
168     g_string_append(cpu->last_exec, (char *)udata);  in vcpu_insn_exec()
204          * checking on the next instruction.  in vcpu_tb_trans()
208             for (j = 0; j < imatches->len && skip; j++) {  in vcpu_tb_trans()
219             for (j = 0; j < amatches->len && skip; j++) {  in vcpu_tb_trans()
235             gchar *args = g_strstr_len(insn_disas, -1, " ");  in vcpu_tb_trans()
236             for (int n = 0; n < all_reg_names->len; n++) {  in vcpu_tb_trans()
248          * - Log insn  in vcpu_tb_trans()
249          * - Log insn while checking registers  in vcpu_tb_trans()
250          * - Don't log this insn but check if last insn changed registers  in vcpu_tb_trans()
289         /* set regs for next */  in vcpu_tb_trans()
301     g_autofree gchar *lower = g_utf8_strdown(desc->name, -1);  in init_vcpu_register()
304     reg->handle = desc->handle;  in init_vcpu_register()
305     reg->name = g_intern_string(lower);  in init_vcpu_register()
306     reg->last = g_byte_array_new();  in init_vcpu_register()
307     reg->new = g_byte_array_new();  in init_vcpu_register()
310     r = qemu_plugin_read_register(reg->handle, reg->last);  in init_vcpu_register()
338     if (rmatches && reg_list->len) {  in registers_init()
343         for (int r = 0; r < reg_list->len; r++) {  in registers_init()
346             for (int p = 0; p < rmatches->len; p++) {  in registers_init()
347                 g_autoptr(GPatternSpec) pat = g_pattern_spec_new(rmatches->pdata[p]);  in registers_init()
348                 g_autofree gchar *rd_lower = g_utf8_strdown(rd->name, -1);  in registers_init()
349                 if (g_pattern_spec_match_string(pat, rd->name) ||  in registers_init()
357                         if (!g_ptr_array_find(all_reg_names, reg->name, NULL)) {  in registers_init()
358                             g_ptr_array_add(all_reg_names, (gpointer)reg->name);  in registers_init()
367     return registers->len ? g_steal_pointer(&registers) : NULL;  in registers_init()
372  *   - last_exec tracking data
373  *   - list of tracked registers
374  *   - initial value of registers
384     if (vcpu_index >= cpus->len) {  in vcpu_init()
390     c->last_exec = g_string_new(NULL);  in vcpu_init()
391     c->registers = registers_init(vcpu_index);  in vcpu_init()
395  * On plugin exit, print last instruction in cache
401     for (i = 0; i < cpus->len; i++) {  in plugin_exit()
403         if (c->last_exec && c->last_exec->str) {  in plugin_exit()
404             qemu_plugin_outs(c->last_exec->str);  in plugin_exit()
450      * Initialize dynamic array to cache vCPU instruction. In user mode  in qemu_plugin_install()
454                              info->system_emulation ? info->system.max_vcpus : 1);  in qemu_plugin_install()
468                 return -1;  in qemu_plugin_install()
473             return -1;  in qemu_plugin_install()