3 #include "../../perf.h"
4 #include "../../util/util.h"
5 #include "../../util/perf_regs.h"
7 const struct sample_reg sample_reg_masks[] = {
8 SMPL_REG(AX, PERF_REG_X86_AX),
9 SMPL_REG(BX, PERF_REG_X86_BX),
10 SMPL_REG(CX, PERF_REG_X86_CX),
11 SMPL_REG(DX, PERF_REG_X86_DX),
12 SMPL_REG(SI, PERF_REG_X86_SI),
13 SMPL_REG(DI, PERF_REG_X86_DI),
14 SMPL_REG(BP, PERF_REG_X86_BP),
15 SMPL_REG(SP, PERF_REG_X86_SP),
16 SMPL_REG(IP, PERF_REG_X86_IP),
17 SMPL_REG(FLAGS, PERF_REG_X86_FLAGS),
18 SMPL_REG(CS, PERF_REG_X86_CS),
19 SMPL_REG(SS, PERF_REG_X86_SS),
20 #ifdef HAVE_ARCH_X86_64_SUPPORT
21 SMPL_REG(R8, PERF_REG_X86_R8),
22 SMPL_REG(R9, PERF_REG_X86_R9),
23 SMPL_REG(R10, PERF_REG_X86_R10),
24 SMPL_REG(R11, PERF_REG_X86_R11),
25 SMPL_REG(R12, PERF_REG_X86_R12),
26 SMPL_REG(R13, PERF_REG_X86_R13),
27 SMPL_REG(R14, PERF_REG_X86_R14),
28 SMPL_REG(R15, PERF_REG_X86_R15),
35 const char *uprobe_name;
37 #define SDT_NAME_REG(n, m) {.sdt_name = "%" #n, .uprobe_name = "%" #m}
38 #define SDT_NAME_REG_END {.sdt_name = NULL, .uprobe_name = NULL}
40 static const struct sdt_name_reg sdt_reg_renamings[] = {
41 SDT_NAME_REG(eax, ax),
42 SDT_NAME_REG(rax, ax),
43 SDT_NAME_REG(ebx, bx),
44 SDT_NAME_REG(rbx, bx),
45 SDT_NAME_REG(ecx, cx),
46 SDT_NAME_REG(rcx, cx),
47 SDT_NAME_REG(edx, dx),
48 SDT_NAME_REG(rdx, dx),
49 SDT_NAME_REG(esi, si),
50 SDT_NAME_REG(rsi, si),
51 SDT_NAME_REG(edi, di),
52 SDT_NAME_REG(rdi, di),
53 SDT_NAME_REG(ebp, bp),
54 SDT_NAME_REG(rbp, bp),
58 int sdt_rename_register(char **pdesc, char *old_name)
60 const struct sdt_name_reg *rnames = sdt_reg_renamings;
61 char *new_desc, *old_desc = *pdesc;
62 size_t prefix_len, sdt_len, uprobe_len, old_desc_len, offset;
65 while (ret != 0 && rnames->sdt_name != NULL) {
66 sdt_len = strlen(rnames->sdt_name);
67 ret = strncmp(old_name, rnames->sdt_name, sdt_len);
71 if (rnames->sdt_name == NULL)
74 sdt_len = strlen(rnames->sdt_name);
75 uprobe_len = strlen(rnames->uprobe_name);
76 old_desc_len = strlen(old_desc) + 1;
78 new_desc = zalloc(old_desc_len + uprobe_len - sdt_len);
82 /* Copy the chars before the register name (at least '%') */
83 prefix_len = old_name - old_desc;
84 memcpy(new_desc, old_desc, prefix_len);
86 /* Copy the new register name */
87 memcpy(new_desc + prefix_len, rnames->uprobe_name, uprobe_len);
89 /* Copy the chars after the register name (if need be) */
90 offset = prefix_len + sdt_len;
91 if (offset < old_desc_len) {
93 * The orginal register name can be suffixed by 'b',
94 * 'w' or 'd' to indicate its size; so, we need to
95 * skip this char if we met one.
97 char sfx = old_desc[offset];
99 if (sfx == 'b' || sfx == 'w' || sfx == 'd')
103 if (offset < old_desc_len)
104 memcpy(new_desc + prefix_len + uprobe_len,
105 old_desc + offset, old_desc_len - offset);