powerpc/util/perf_regs.c

1 // SPDX-License-Identifier: GPL-2.0
12 #include "../../../perf-sys.h"
84 #define SDT_OP_REGEX1  "^(%r)?([1-2]?[0-9]|3[0-1])$"
86 /* -NUM(REG) or NUM(REG) or -NUM(%rREG) or NUM(%rREG) */
87 #define SDT_OP_REGEX2  "^(\\-)?([0-9]+)\\((%r)?([1-2]?[0-9]|3[0-1])\\)$"
118  * Parse OP and convert it into uprobe format, which is, +/-NUM(%gprREG).
120  *	Format		Example
121  *	-------------------------
123  *	-NUM(REG)	-48(18)
125  *	-NUM(%rREG)	-48(%r18)
129  *	i-NUM		i-1
131  * SDT marker arguments on Powerpc uses %rREG form with -mregnames flag
132  * and REG form with -mno-regnames. Here REG is general purpose register,
152 		/* REG or %rREG --> %gprREG */  in arch_sdt_arg_parse_op()
155 		new_len += (int)(rm[2].rm_eo - rm[2].rm_so);  in arch_sdt_arg_parse_op()
159 			return -ENOMEM;  in arch_sdt_arg_parse_op()
162 			(int)(rm[2].rm_eo - rm[2].rm_so), old_op + rm[2].rm_so);  in arch_sdt_arg_parse_op()
165 		 * -NUM(REG) or NUM(REG) or -NUM(%rREG) or NUM(%rREG) -->  in arch_sdt_arg_parse_op()
166 		 *	+/-NUM(%gprREG)  in arch_sdt_arg_parse_op()
168 		prefix = (rm[1].rm_so == -1) ? '+' : '-';  in arch_sdt_arg_parse_op()
170 		new_len = 8;	/* +/- ( % g p r ) NULL */  in arch_sdt_arg_parse_op()
171 		new_len += (int)(rm[2].rm_eo - rm[2].rm_so);  in arch_sdt_arg_parse_op()
172 		new_len += (int)(rm[4].rm_eo - rm[4].rm_so);  in arch_sdt_arg_parse_op()
176 			return -ENOMEM;  in arch_sdt_arg_parse_op()
179 			(int)(rm[2].rm_eo - rm[2].rm_so), old_op + rm[2].rm_so,  in arch_sdt_arg_parse_op()
180 			(int)(rm[4].rm_eo - rm[4].rm_so), old_op + rm[4].rm_so);  in arch_sdt_arg_parse_op()
221 	 * returning the register mask to sample.  in arch__intr_reg_mask()
223 	fd = sys_perf_event_open(&attr, 0, -1, -1, 0);  in arch__intr_reg_mask()
224 	if (fd != -1) {  in arch__intr_reg_mask()