1// SPDX-License-Identifier: GPL-2.0
  2
  3static int is_branch_cond(const char *cond)
  4{
  5	if (cond[0] == '\0')
  6		return 1;
  7
  8	if (cond[0] == 'a' && cond[1] == '\0')
  9		return 1;
 10
 11	if (cond[0] == 'c' &&
 12	    (cond[1] == 'c' || cond[1] == 's') &&
 13	    cond[2] == '\0')
 14		return 1;
 15
 16	if (cond[0] == 'e' &&
 17	    (cond[1] == '\0' ||
 18	     (cond[1] == 'q' && cond[2] == '\0')))
 19		return 1;
 20
 21	if (cond[0] == 'g' &&
 22	    (cond[1] == '\0' ||
 23	     (cond[1] == 't' && cond[2] == '\0') ||
 24	     (cond[1] == 'e' && cond[2] == '\0') ||
 25	     (cond[1] == 'e' && cond[2] == 'u' && cond[3] == '\0')))
 26		return 1;
 27
 28	if (cond[0] == 'l' &&
 29	    (cond[1] == '\0' ||
 30	     (cond[1] == 't' && cond[2] == '\0') ||
 31	     (cond[1] == 'u' && cond[2] == '\0') ||
 32	     (cond[1] == 'e' && cond[2] == '\0') ||
 33	     (cond[1] == 'e' && cond[2] == 'u' && cond[3] == '\0')))
 34		return 1;
 35
 36	if (cond[0] == 'n' &&
 37	    (cond[1] == '\0' ||
 38	     (cond[1] == 'e' && cond[2] == '\0') ||
 39	     (cond[1] == 'z' && cond[2] == '\0') ||
 40	     (cond[1] == 'e' && cond[2] == 'g' && cond[3] == '\0')))
 41		return 1;
 42
 43	if (cond[0] == 'b' &&
 44	    cond[1] == 'p' &&
 45	    cond[2] == 'o' &&
 46	    cond[3] == 's' &&
 47	    cond[4] == '\0')
 48		return 1;
 49
 50	if (cond[0] == 'v' &&
 51	    (cond[1] == 'c' || cond[1] == 's') &&
 52	    cond[2] == '\0')
 53		return 1;
 54
 55	if (cond[0] == 'b' &&
 56	    cond[1] == 'z' &&
 57	    cond[2] == '\0')
 58		return 1;
 59
 60	return 0;
 61}
 62
 63static int is_branch_reg_cond(const char *cond)
 64{
 65	if ((cond[0] == 'n' || cond[0] == 'l') &&
 66	    cond[1] == 'z' &&
 67	    cond[2] == '\0')
 68		return 1;
 69
 70	if (cond[0] == 'z' &&
 71	    cond[1] == '\0')
 72		return 1;
 73
 74	if ((cond[0] == 'g' || cond[0] == 'l') &&
 75	    cond[1] == 'e' &&
 76	    cond[2] == 'z' &&
 77	    cond[3] == '\0')
 78		return 1;
 79
 80	if (cond[0] == 'g' &&
 81	    cond[1] == 'z' &&
 82	    cond[2] == '\0')
 83		return 1;
 84
 85	return 0;
 86}
 87
 88static int is_branch_float_cond(const char *cond)
 89{
 90	if (cond[0] == '\0')
 91		return 1;
 92
 93	if ((cond[0] == 'a' || cond[0] == 'e' ||
 94	     cond[0] == 'z' || cond[0] == 'g' ||
 95	     cond[0] == 'l' || cond[0] == 'n' ||
 96	     cond[0] == 'o' || cond[0] == 'u') &&
 97	    cond[1] == '\0')
 98		return 1;
 99
100	if (((cond[0] == 'g' && cond[1] == 'e') ||
101	     (cond[0] == 'l' && (cond[1] == 'e' ||
102				 cond[1] == 'g')) ||
103	     (cond[0] == 'n' && (cond[1] == 'e' ||
104				 cond[1] == 'z')) ||
105	     (cond[0] == 'u' && (cond[1] == 'e' ||
106				 cond[1] == 'g' ||
107				 cond[1] == 'l'))) &&
108	    cond[2] == '\0')
109		return 1;
110
111	if (cond[0] == 'u' &&
112	    (cond[1] == 'g' || cond[1] == 'l') &&
113	    cond[2] == 'e' &&
114	    cond[3] == '\0')
115		return 1;
116
117	return 0;
118}
119
120static struct ins_ops *sparc__associate_instruction_ops(struct arch *arch, const char *name)
121{
122	struct ins_ops *ops = NULL;
123
124	if (!strcmp(name, "call") ||
125	    !strcmp(name, "jmp") ||
126	    !strcmp(name, "jmpl")) {
127		ops = &call_ops;
128	} else if (!strcmp(name, "ret") ||
129		   !strcmp(name, "retl") ||
130		   !strcmp(name, "return")) {
131		ops = &ret_ops;
132	} else if (!strcmp(name, "mov")) {
133		ops = &mov_ops;
134	} else {
135		if (name[0] == 'c' &&
136		    (name[1] == 'w' || name[1] == 'x'))
137			name += 2;
138
139		if (name[0] == 'b') {
140			const char *cond = name + 1;
141
142			if (cond[0] == 'r') {
143				if (is_branch_reg_cond(cond + 1))
144					ops = &jump_ops;
145			} else if (is_branch_cond(cond)) {
146				ops = &jump_ops;
147			}
148		} else if (name[0] == 'f' && name[1] == 'b') {
149			if (is_branch_float_cond(name + 2))
150				ops = &jump_ops;
151		}
152	}
153
154	if (ops)
155		arch__associate_ins_ops(arch, name, ops);
156
157	return ops;
158}
159
160static int sparc__annotate_init(struct arch *arch, char *cpuid __maybe_unused)
161{
162	if (!arch->initialized) {
163		arch->initialized = true;
164		arch->associate_instruction_ops = sparc__associate_instruction_ops;
165		arch->objdump.comment_char = '#';
166	}
167
168	return 0;
169}