1 //===-- RegisterContextPOSIX_x86.cpp ----------------------------*- C++ -*-===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9
10 #include <cstring>
11 #include <errno.h>
12 #include <stdint.h>
13
14 #include "lldb/Core/DataBufferHeap.h"
15 #include "lldb/Core/DataExtractor.h"
16 #include "lldb/Core/RegisterValue.h"
17 #include "lldb/Core/Scalar.h"
18 #include "lldb/Target/Target.h"
19 #include "lldb/Target/Thread.h"
20 #include "lldb/Host/Endian.h"
21 #include "llvm/Support/Compiler.h"
22
23 #include "RegisterContext_x86.h"
24 #include "RegisterContextPOSIX_x86.h"
25 #include "Plugins/Process/elf-core/ProcessElfCore.h"
26
27 using namespace lldb_private;
28 using namespace lldb;
29
30 const uint32_t
31 g_gpr_regnums_i386[] =
32 {
33 lldb_eax_i386,
34 lldb_ebx_i386,
35 lldb_ecx_i386,
36 lldb_edx_i386,
37 lldb_edi_i386,
38 lldb_esi_i386,
39 lldb_ebp_i386,
40 lldb_esp_i386,
41 lldb_eip_i386,
42 lldb_eflags_i386,
43 lldb_cs_i386,
44 lldb_fs_i386,
45 lldb_gs_i386,
46 lldb_ss_i386,
47 lldb_ds_i386,
48 lldb_es_i386,
49 lldb_ax_i386,
50 lldb_bx_i386,
51 lldb_cx_i386,
52 lldb_dx_i386,
53 lldb_di_i386,
54 lldb_si_i386,
55 lldb_bp_i386,
56 lldb_sp_i386,
57 lldb_ah_i386,
58 lldb_bh_i386,
59 lldb_ch_i386,
60 lldb_dh_i386,
61 lldb_al_i386,
62 lldb_bl_i386,
63 lldb_cl_i386,
64 lldb_dl_i386,
65 LLDB_INVALID_REGNUM, // Register sets must be terminated with LLDB_INVALID_REGNUM.
66 };
67 static_assert((sizeof(g_gpr_regnums_i386) / sizeof(g_gpr_regnums_i386[0])) - 1 == k_num_gpr_registers_i386,
68 "g_gpr_regnums_i386 has wrong number of register infos");
69
70 const uint32_t
71 g_lldb_regnums_i386[] =
72 {
73 lldb_fctrl_i386,
74 lldb_fstat_i386,
75 lldb_ftag_i386,
76 lldb_fop_i386,
77 lldb_fiseg_i386,
78 lldb_fioff_i386,
79 lldb_foseg_i386,
80 lldb_fooff_i386,
81 lldb_mxcsr_i386,
82 lldb_mxcsrmask_i386,
83 lldb_st0_i386,
84 lldb_st1_i386,
85 lldb_st2_i386,
86 lldb_st3_i386,
87 lldb_st4_i386,
88 lldb_st5_i386,
89 lldb_st6_i386,
90 lldb_st7_i386,
91 lldb_mm0_i386,
92 lldb_mm1_i386,
93 lldb_mm2_i386,
94 lldb_mm3_i386,
95 lldb_mm4_i386,
96 lldb_mm5_i386,
97 lldb_mm6_i386,
98 lldb_mm7_i386,
99 lldb_xmm0_i386,
100 lldb_xmm1_i386,
101 lldb_xmm2_i386,
102 lldb_xmm3_i386,
103 lldb_xmm4_i386,
104 lldb_xmm5_i386,
105 lldb_xmm6_i386,
106 lldb_xmm7_i386,
107 LLDB_INVALID_REGNUM // Register sets must be terminated with LLDB_INVALID_REGNUM.
108 };
109 static_assert((sizeof(g_lldb_regnums_i386) / sizeof(g_lldb_regnums_i386[0])) - 1 == k_num_fpr_registers_i386,
110 "g_lldb_regnums_i386 has wrong number of register infos");
111
112 const uint32_t
113 g_avx_regnums_i386[] =
114 {
115 lldb_ymm0_i386,
116 lldb_ymm1_i386,
117 lldb_ymm2_i386,
118 lldb_ymm3_i386,
119 lldb_ymm4_i386,
120 lldb_ymm5_i386,
121 lldb_ymm6_i386,
122 lldb_ymm7_i386,
123 LLDB_INVALID_REGNUM // Register sets must be terminated with LLDB_INVALID_REGNUM.
124 };
125 static_assert((sizeof(g_avx_regnums_i386) / sizeof(g_avx_regnums_i386[0])) - 1 == k_num_avx_registers_i386,
126 " g_avx_regnums_i386 has wrong number of register infos");
127
128 static const
129 uint32_t g_gpr_regnums_x86_64[] =
130 {
131 lldb_rax_x86_64,
132 lldb_rbx_x86_64,
133 lldb_rcx_x86_64,
134 lldb_rdx_x86_64,
135 lldb_rdi_x86_64,
136 lldb_rsi_x86_64,
137 lldb_rbp_x86_64,
138 lldb_rsp_x86_64,
139 lldb_r8_x86_64,
140 lldb_r9_x86_64,
141 lldb_r10_x86_64,
142 lldb_r11_x86_64,
143 lldb_r12_x86_64,
144 lldb_r13_x86_64,
145 lldb_r14_x86_64,
146 lldb_r15_x86_64,
147 lldb_rip_x86_64,
148 lldb_rflags_x86_64,
149 lldb_cs_x86_64,
150 lldb_fs_x86_64,
151 lldb_gs_x86_64,
152 lldb_ss_x86_64,
153 lldb_ds_x86_64,
154 lldb_es_x86_64,
155 lldb_eax_x86_64,
156 lldb_ebx_x86_64,
157 lldb_ecx_x86_64,
158 lldb_edx_x86_64,
159 lldb_edi_x86_64,
160 lldb_esi_x86_64,
161 lldb_ebp_x86_64,
162 lldb_esp_x86_64,
163 lldb_r8d_x86_64, // Low 32 bits or r8
164 lldb_r9d_x86_64, // Low 32 bits or r9
165 lldb_r10d_x86_64, // Low 32 bits or r10
166 lldb_r11d_x86_64, // Low 32 bits or r11
167 lldb_r12d_x86_64, // Low 32 bits or r12
168 lldb_r13d_x86_64, // Low 32 bits or r13
169 lldb_r14d_x86_64, // Low 32 bits or r14
170 lldb_r15d_x86_64, // Low 32 bits or r15
171 lldb_ax_x86_64,
172 lldb_bx_x86_64,
173 lldb_cx_x86_64,
174 lldb_dx_x86_64,
175 lldb_di_x86_64,
176 lldb_si_x86_64,
177 lldb_bp_x86_64,
178 lldb_sp_x86_64,
179 lldb_r8w_x86_64, // Low 16 bits or r8
180 lldb_r9w_x86_64, // Low 16 bits or r9
181 lldb_r10w_x86_64, // Low 16 bits or r10
182 lldb_r11w_x86_64, // Low 16 bits or r11
183 lldb_r12w_x86_64, // Low 16 bits or r12
184 lldb_r13w_x86_64, // Low 16 bits or r13
185 lldb_r14w_x86_64, // Low 16 bits or r14
186 lldb_r15w_x86_64, // Low 16 bits or r15
187 lldb_ah_x86_64,
188 lldb_bh_x86_64,
189 lldb_ch_x86_64,
190 lldb_dh_x86_64,
191 lldb_al_x86_64,
192 lldb_bl_x86_64,
193 lldb_cl_x86_64,
194 lldb_dl_x86_64,
195 lldb_dil_x86_64,
196 lldb_sil_x86_64,
197 lldb_bpl_x86_64,
198 lldb_spl_x86_64,
199 lldb_r8l_x86_64, // Low 8 bits or r8
200 lldb_r9l_x86_64, // Low 8 bits or r9
201 lldb_r10l_x86_64, // Low 8 bits or r10
202 lldb_r11l_x86_64, // Low 8 bits or r11
203 lldb_r12l_x86_64, // Low 8 bits or r12
204 lldb_r13l_x86_64, // Low 8 bits or r13
205 lldb_r14l_x86_64, // Low 8 bits or r14
206 lldb_r15l_x86_64, // Low 8 bits or r15
207 LLDB_INVALID_REGNUM // Register sets must be terminated with LLDB_INVALID_REGNUM.
208 };
209 static_assert((sizeof(g_gpr_regnums_x86_64) / sizeof(g_gpr_regnums_x86_64[0])) - 1 == k_num_gpr_registers_x86_64,
210 "g_gpr_regnums_x86_64 has wrong number of register infos");
211
212 static const uint32_t
213 g_lldb_regnums_x86_64[] =
214 {
215 lldb_fctrl_x86_64,
216 lldb_fstat_x86_64,
217 lldb_ftag_x86_64,
218 lldb_fop_x86_64,
219 lldb_fiseg_x86_64,
220 lldb_fioff_x86_64,
221 lldb_foseg_x86_64,
222 lldb_fooff_x86_64,
223 lldb_mxcsr_x86_64,
224 lldb_mxcsrmask_x86_64,
225 lldb_st0_x86_64,
226 lldb_st1_x86_64,
227 lldb_st2_x86_64,
228 lldb_st3_x86_64,
229 lldb_st4_x86_64,
230 lldb_st5_x86_64,
231 lldb_st6_x86_64,
232 lldb_st7_x86_64,
233 lldb_mm0_x86_64,
234 lldb_mm1_x86_64,
235 lldb_mm2_x86_64,
236 lldb_mm3_x86_64,
237 lldb_mm4_x86_64,
238 lldb_mm5_x86_64,
239 lldb_mm6_x86_64,
240 lldb_mm7_x86_64,
241 lldb_xmm0_x86_64,
242 lldb_xmm1_x86_64,
243 lldb_xmm2_x86_64,
244 lldb_xmm3_x86_64,
245 lldb_xmm4_x86_64,
246 lldb_xmm5_x86_64,
247 lldb_xmm6_x86_64,
248 lldb_xmm7_x86_64,
249 lldb_xmm8_x86_64,
250 lldb_xmm9_x86_64,
251 lldb_xmm10_x86_64,
252 lldb_xmm11_x86_64,
253 lldb_xmm12_x86_64,
254 lldb_xmm13_x86_64,
255 lldb_xmm14_x86_64,
256 lldb_xmm15_x86_64,
257 LLDB_INVALID_REGNUM // Register sets must be terminated with LLDB_INVALID_REGNUM.
258 };
259 static_assert((sizeof(g_lldb_regnums_x86_64) / sizeof(g_lldb_regnums_x86_64[0])) - 1 == k_num_fpr_registers_x86_64,
260 "g_lldb_regnums_x86_64 has wrong number of register infos");
261
262 static const uint32_t
263 g_avx_regnums_x86_64[] =
264 {
265 lldb_ymm0_x86_64,
266 lldb_ymm1_x86_64,
267 lldb_ymm2_x86_64,
268 lldb_ymm3_x86_64,
269 lldb_ymm4_x86_64,
270 lldb_ymm5_x86_64,
271 lldb_ymm6_x86_64,
272 lldb_ymm7_x86_64,
273 lldb_ymm8_x86_64,
274 lldb_ymm9_x86_64,
275 lldb_ymm10_x86_64,
276 lldb_ymm11_x86_64,
277 lldb_ymm12_x86_64,
278 lldb_ymm13_x86_64,
279 lldb_ymm14_x86_64,
280 lldb_ymm15_x86_64,
281 LLDB_INVALID_REGNUM // Register sets must be terminated with LLDB_INVALID_REGNUM.
282 };
283 static_assert((sizeof(g_avx_regnums_x86_64) / sizeof(g_avx_regnums_x86_64[0])) - 1 == k_num_avx_registers_x86_64,
284 "g_avx_regnums_x86_64 has wrong number of register infos");
285
286 uint32_t RegisterContextPOSIX_x86::g_contained_eax[] = { lldb_eax_i386, LLDB_INVALID_REGNUM };
287 uint32_t RegisterContextPOSIX_x86::g_contained_ebx[] = { lldb_ebx_i386, LLDB_INVALID_REGNUM };
288 uint32_t RegisterContextPOSIX_x86::g_contained_ecx[] = { lldb_ecx_i386, LLDB_INVALID_REGNUM };
289 uint32_t RegisterContextPOSIX_x86::g_contained_edx[] = { lldb_edx_i386, LLDB_INVALID_REGNUM };
290 uint32_t RegisterContextPOSIX_x86::g_contained_edi[] = { lldb_edi_i386, LLDB_INVALID_REGNUM };
291 uint32_t RegisterContextPOSIX_x86::g_contained_esi[] = { lldb_esi_i386, LLDB_INVALID_REGNUM };
292 uint32_t RegisterContextPOSIX_x86::g_contained_ebp[] = { lldb_ebp_i386, LLDB_INVALID_REGNUM };
293 uint32_t RegisterContextPOSIX_x86::g_contained_esp[] = { lldb_esp_i386, LLDB_INVALID_REGNUM };
294
295 uint32_t RegisterContextPOSIX_x86::g_invalidate_eax[] = { lldb_eax_i386, lldb_ax_i386, lldb_ah_i386, lldb_al_i386, LLDB_INVALID_REGNUM };
296 uint32_t RegisterContextPOSIX_x86::g_invalidate_ebx[] = { lldb_ebx_i386, lldb_bx_i386, lldb_bh_i386, lldb_bl_i386, LLDB_INVALID_REGNUM };
297 uint32_t RegisterContextPOSIX_x86::g_invalidate_ecx[] = { lldb_ecx_i386, lldb_cx_i386, lldb_ch_i386, lldb_cl_i386, LLDB_INVALID_REGNUM };
298 uint32_t RegisterContextPOSIX_x86::g_invalidate_edx[] = { lldb_edx_i386, lldb_dx_i386, lldb_dh_i386, lldb_dl_i386, LLDB_INVALID_REGNUM };
299 uint32_t RegisterContextPOSIX_x86::g_invalidate_edi[] = { lldb_edi_i386, lldb_di_i386, LLDB_INVALID_REGNUM };
300 uint32_t RegisterContextPOSIX_x86::g_invalidate_esi[] = { lldb_esi_i386, lldb_si_i386, LLDB_INVALID_REGNUM };
301 uint32_t RegisterContextPOSIX_x86::g_invalidate_ebp[] = { lldb_ebp_i386, lldb_bp_i386, LLDB_INVALID_REGNUM };
302 uint32_t RegisterContextPOSIX_x86::g_invalidate_esp[] = { lldb_esp_i386, lldb_sp_i386, LLDB_INVALID_REGNUM };
303
304 uint32_t RegisterContextPOSIX_x86::g_contained_rax[] = { lldb_rax_x86_64, LLDB_INVALID_REGNUM };
305 uint32_t RegisterContextPOSIX_x86::g_contained_rbx[] = { lldb_rbx_x86_64, LLDB_INVALID_REGNUM };
306 uint32_t RegisterContextPOSIX_x86::g_contained_rcx[] = { lldb_rcx_x86_64, LLDB_INVALID_REGNUM };
307 uint32_t RegisterContextPOSIX_x86::g_contained_rdx[] = { lldb_rdx_x86_64, LLDB_INVALID_REGNUM };
308 uint32_t RegisterContextPOSIX_x86::g_contained_rdi[] = { lldb_rdi_x86_64, LLDB_INVALID_REGNUM };
309 uint32_t RegisterContextPOSIX_x86::g_contained_rsi[] = { lldb_rsi_x86_64, LLDB_INVALID_REGNUM };
310 uint32_t RegisterContextPOSIX_x86::g_contained_rbp[] = { lldb_rbp_x86_64, LLDB_INVALID_REGNUM };
311 uint32_t RegisterContextPOSIX_x86::g_contained_rsp[] = { lldb_rsp_x86_64, LLDB_INVALID_REGNUM };
312 uint32_t RegisterContextPOSIX_x86::g_contained_r8[] = { lldb_r8_x86_64, LLDB_INVALID_REGNUM };
313 uint32_t RegisterContextPOSIX_x86::g_contained_r9[] = { lldb_r9_x86_64, LLDB_INVALID_REGNUM };
314 uint32_t RegisterContextPOSIX_x86::g_contained_r10[] = { lldb_r10_x86_64, LLDB_INVALID_REGNUM };
315 uint32_t RegisterContextPOSIX_x86::g_contained_r11[] = { lldb_r11_x86_64, LLDB_INVALID_REGNUM };
316 uint32_t RegisterContextPOSIX_x86::g_contained_r12[] = { lldb_r12_x86_64, LLDB_INVALID_REGNUM };
317 uint32_t RegisterContextPOSIX_x86::g_contained_r13[] = { lldb_r13_x86_64, LLDB_INVALID_REGNUM };
318 uint32_t RegisterContextPOSIX_x86::g_contained_r14[] = { lldb_r14_x86_64, LLDB_INVALID_REGNUM };
319 uint32_t RegisterContextPOSIX_x86::g_contained_r15[] = { lldb_r15_x86_64, LLDB_INVALID_REGNUM };
320
321 uint32_t RegisterContextPOSIX_x86::g_invalidate_rax[] = { lldb_rax_x86_64, lldb_eax_x86_64, lldb_ax_x86_64, lldb_ah_x86_64, lldb_al_x86_64, LLDB_INVALID_REGNUM };
322 uint32_t RegisterContextPOSIX_x86::g_invalidate_rbx[] = { lldb_rbx_x86_64, lldb_ebx_x86_64, lldb_bx_x86_64, lldb_bh_x86_64, lldb_bl_x86_64, LLDB_INVALID_REGNUM };
323 uint32_t RegisterContextPOSIX_x86::g_invalidate_rcx[] = { lldb_rcx_x86_64, lldb_ecx_x86_64, lldb_cx_x86_64, lldb_ch_x86_64, lldb_cl_x86_64, LLDB_INVALID_REGNUM };
324 uint32_t RegisterContextPOSIX_x86::g_invalidate_rdx[] = { lldb_rdx_x86_64, lldb_edx_x86_64, lldb_dx_x86_64, lldb_dh_x86_64, lldb_dl_x86_64, LLDB_INVALID_REGNUM };
325 uint32_t RegisterContextPOSIX_x86::g_invalidate_rdi[] = { lldb_rdi_x86_64, lldb_edi_x86_64, lldb_di_x86_64, lldb_dil_x86_64, LLDB_INVALID_REGNUM };
326 uint32_t RegisterContextPOSIX_x86::g_invalidate_rsi[] = { lldb_rsi_x86_64, lldb_esi_x86_64, lldb_si_x86_64, lldb_sil_x86_64, LLDB_INVALID_REGNUM };
327 uint32_t RegisterContextPOSIX_x86::g_invalidate_rbp[] = { lldb_rbp_x86_64, lldb_ebp_x86_64, lldb_bp_x86_64, lldb_bpl_x86_64, LLDB_INVALID_REGNUM };
328 uint32_t RegisterContextPOSIX_x86::g_invalidate_rsp[] = { lldb_rsp_x86_64, lldb_esp_x86_64, lldb_sp_x86_64, lldb_spl_x86_64, LLDB_INVALID_REGNUM };
329 uint32_t RegisterContextPOSIX_x86::g_invalidate_r8[] = { lldb_r8_x86_64, lldb_r8d_x86_64, lldb_r8w_x86_64, lldb_r8l_x86_64, LLDB_INVALID_REGNUM };
330 uint32_t RegisterContextPOSIX_x86::g_invalidate_r9[] = { lldb_r9_x86_64, lldb_r9d_x86_64, lldb_r9w_x86_64, lldb_r9l_x86_64, LLDB_INVALID_REGNUM };
331 uint32_t RegisterContextPOSIX_x86::g_invalidate_r10[] = { lldb_r10_x86_64, lldb_r10d_x86_64, lldb_r10w_x86_64, lldb_r10l_x86_64, LLDB_INVALID_REGNUM };
332 uint32_t RegisterContextPOSIX_x86::g_invalidate_r11[] = { lldb_r11_x86_64, lldb_r11d_x86_64, lldb_r11w_x86_64, lldb_r11l_x86_64, LLDB_INVALID_REGNUM };
333 uint32_t RegisterContextPOSIX_x86::g_invalidate_r12[] = { lldb_r12_x86_64, lldb_r12d_x86_64, lldb_r12w_x86_64, lldb_r12l_x86_64, LLDB_INVALID_REGNUM };
334 uint32_t RegisterContextPOSIX_x86::g_invalidate_r13[] = { lldb_r13_x86_64, lldb_r13d_x86_64, lldb_r13w_x86_64, lldb_r13l_x86_64, LLDB_INVALID_REGNUM };
335 uint32_t RegisterContextPOSIX_x86::g_invalidate_r14[] = { lldb_r14_x86_64, lldb_r14d_x86_64, lldb_r14w_x86_64, lldb_r14l_x86_64, LLDB_INVALID_REGNUM };
336 uint32_t RegisterContextPOSIX_x86::g_invalidate_r15[] = { lldb_r15_x86_64, lldb_r15d_x86_64, lldb_r15w_x86_64, lldb_r15l_x86_64, LLDB_INVALID_REGNUM };
337
338 // Number of register sets provided by this context.
339 enum
340 {
341 k_num_extended_register_sets = 1,
342 k_num_register_sets = 3
343 };
344
345 static const RegisterSet
346 g_reg_sets_i386[k_num_register_sets] =
347 {
348 { "General Purpose Registers", "gpr", k_num_gpr_registers_i386, g_gpr_regnums_i386 },
349 { "Floating Point Registers", "fpu", k_num_fpr_registers_i386, g_lldb_regnums_i386 },
350 { "Advanced Vector Extensions", "avx", k_num_avx_registers_i386, g_avx_regnums_i386 }
351 };
352
353 static const RegisterSet
354 g_reg_sets_x86_64[k_num_register_sets] =
355 {
356 { "General Purpose Registers", "gpr", k_num_gpr_registers_x86_64, g_gpr_regnums_x86_64 },
357 { "Floating Point Registers", "fpu", k_num_fpr_registers_x86_64, g_lldb_regnums_x86_64 },
358 { "Advanced Vector Extensions", "avx", k_num_avx_registers_x86_64, g_avx_regnums_x86_64 }
359 };
360
IsGPR(unsigned reg)361 bool RegisterContextPOSIX_x86::IsGPR(unsigned reg)
362 {
363 return reg <= m_reg_info.last_gpr; // GPR's come first.
364 }
365
IsFPR(unsigned reg)366 bool RegisterContextPOSIX_x86::IsFPR(unsigned reg)
367 {
368 return (m_reg_info.first_fpr <= reg && reg <= m_reg_info.last_fpr);
369 }
370
IsAVX(unsigned reg)371 bool RegisterContextPOSIX_x86::IsAVX(unsigned reg)
372 {
373 return (m_reg_info.first_ymm <= reg && reg <= m_reg_info.last_ymm);
374 }
375
IsFPR(unsigned reg,FPRType fpr_type)376 bool RegisterContextPOSIX_x86::IsFPR(unsigned reg, FPRType fpr_type)
377 {
378 bool generic_fpr = IsFPR(reg);
379
380 if (fpr_type == eXSAVE)
381 return generic_fpr || IsAVX(reg);
382 return generic_fpr;
383 }
384
RegisterContextPOSIX_x86(Thread & thread,uint32_t concrete_frame_idx,RegisterInfoInterface * register_info)385 RegisterContextPOSIX_x86::RegisterContextPOSIX_x86(Thread &thread,
386 uint32_t concrete_frame_idx,
387 RegisterInfoInterface *register_info)
388 : RegisterContext(thread, concrete_frame_idx)
389 {
390 m_register_info_ap.reset(register_info);
391
392 switch (register_info->m_target_arch.GetMachine())
393 {
394 case llvm::Triple::x86:
395 m_reg_info.num_registers = k_num_registers_i386;
396 m_reg_info.num_gpr_registers = k_num_gpr_registers_i386;
397 m_reg_info.num_fpr_registers = k_num_fpr_registers_i386;
398 m_reg_info.num_avx_registers = k_num_avx_registers_i386;
399 m_reg_info.last_gpr = k_last_gpr_i386;
400 m_reg_info.first_fpr = k_first_fpr_i386;
401 m_reg_info.last_fpr = k_last_fpr_i386;
402 m_reg_info.first_st = lldb_st0_i386;
403 m_reg_info.last_st = lldb_st7_i386;
404 m_reg_info.first_mm = lldb_mm0_i386;
405 m_reg_info.last_mm = lldb_mm7_i386;
406 m_reg_info.first_xmm = lldb_xmm0_i386;
407 m_reg_info.last_xmm = lldb_xmm7_i386;
408 m_reg_info.first_ymm = lldb_ymm0_i386;
409 m_reg_info.last_ymm = lldb_ymm7_i386;
410 m_reg_info.first_dr = lldb_dr0_i386;
411 m_reg_info.gpr_flags = lldb_eflags_i386;
412 break;
413 case llvm::Triple::x86_64:
414 m_reg_info.num_registers = k_num_registers_x86_64;
415 m_reg_info.num_gpr_registers = k_num_gpr_registers_x86_64;
416 m_reg_info.num_fpr_registers = k_num_fpr_registers_x86_64;
417 m_reg_info.num_avx_registers = k_num_avx_registers_x86_64;
418 m_reg_info.last_gpr = k_last_gpr_x86_64;
419 m_reg_info.first_fpr = k_first_fpr_x86_64;
420 m_reg_info.last_fpr = k_last_fpr_x86_64;
421 m_reg_info.first_st = lldb_st0_x86_64;
422 m_reg_info.last_st = lldb_st7_x86_64;
423 m_reg_info.first_mm = lldb_mm0_x86_64;
424 m_reg_info.last_mm = lldb_mm7_x86_64;
425 m_reg_info.first_xmm = lldb_xmm0_x86_64;
426 m_reg_info.last_xmm = lldb_xmm15_x86_64;
427 m_reg_info.first_ymm = lldb_ymm0_x86_64;
428 m_reg_info.last_ymm = lldb_ymm15_x86_64;
429 m_reg_info.first_dr = lldb_dr0_x86_64;
430 m_reg_info.gpr_flags = lldb_rflags_x86_64;
431 break;
432 default:
433 assert(false && "Unhandled target architecture.");
434 break;
435 }
436
437 // Initialize m_iovec to point to the buffer and buffer size
438 // using the conventions of Berkeley style UIO structures, as required
439 // by PTRACE extensions.
440 m_iovec.iov_base = &m_fpr.xstate.xsave;
441 m_iovec.iov_len = sizeof(m_fpr.xstate.xsave);
442
443 ::memset(&m_fpr, 0, sizeof(FPR));
444
445 // elf-core yet to support ReadFPR()
446 ProcessSP base = CalculateProcess();
447 if (base.get()->GetPluginName() == ProcessElfCore::GetPluginNameStatic())
448 return;
449
450 m_fpr_type = eNotValid;
451 }
452
~RegisterContextPOSIX_x86()453 RegisterContextPOSIX_x86::~RegisterContextPOSIX_x86()
454 {
455 }
456
GetFPRType()457 RegisterContextPOSIX_x86::FPRType RegisterContextPOSIX_x86::GetFPRType()
458 {
459 if (m_fpr_type == eNotValid)
460 {
461 // TODO: Use assembly to call cpuid on the inferior and query ebx or ecx
462 m_fpr_type = eXSAVE; // extended floating-point registers, if available
463 if (false == ReadFPR())
464 m_fpr_type = eFXSAVE; // assume generic floating-point registers
465 }
466 return m_fpr_type;
467 }
468
469 void
Invalidate()470 RegisterContextPOSIX_x86::Invalidate()
471 {
472 }
473
474 void
InvalidateAllRegisters()475 RegisterContextPOSIX_x86::InvalidateAllRegisters()
476 {
477 }
478
479 unsigned
GetRegisterOffset(unsigned reg)480 RegisterContextPOSIX_x86::GetRegisterOffset(unsigned reg)
481 {
482 assert(reg < m_reg_info.num_registers && "Invalid register number.");
483 return GetRegisterInfo()[reg].byte_offset;
484 }
485
486 unsigned
GetRegisterSize(unsigned reg)487 RegisterContextPOSIX_x86::GetRegisterSize(unsigned reg)
488 {
489 assert(reg < m_reg_info.num_registers && "Invalid register number.");
490 return GetRegisterInfo()[reg].byte_size;
491 }
492
493 size_t
GetRegisterCount()494 RegisterContextPOSIX_x86::GetRegisterCount()
495 {
496 size_t num_registers = m_reg_info.num_gpr_registers + m_reg_info.num_fpr_registers;
497 if (GetFPRType() == eXSAVE)
498 return num_registers + m_reg_info.num_avx_registers;
499 return num_registers;
500 }
501
502 size_t
GetGPRSize()503 RegisterContextPOSIX_x86::GetGPRSize()
504 {
505 return m_register_info_ap->GetGPRSize ();
506 }
507
508 const RegisterInfo *
GetRegisterInfo()509 RegisterContextPOSIX_x86::GetRegisterInfo()
510 {
511 // Commonly, this method is overridden and g_register_infos is copied and specialized.
512 // So, use GetRegisterInfo() rather than g_register_infos in this scope.
513 return m_register_info_ap->GetRegisterInfo ();
514 }
515
516 const RegisterInfo *
GetRegisterInfoAtIndex(size_t reg)517 RegisterContextPOSIX_x86::GetRegisterInfoAtIndex(size_t reg)
518 {
519 if (reg < m_reg_info.num_registers)
520 return &GetRegisterInfo()[reg];
521 else
522 return NULL;
523 }
524
525 size_t
GetRegisterSetCount()526 RegisterContextPOSIX_x86::GetRegisterSetCount()
527 {
528 size_t sets = 0;
529 for (size_t set = 0; set < k_num_register_sets; ++set)
530 {
531 if (IsRegisterSetAvailable(set))
532 ++sets;
533 }
534
535 return sets;
536 }
537
538 const RegisterSet *
GetRegisterSet(size_t set)539 RegisterContextPOSIX_x86::GetRegisterSet(size_t set)
540 {
541 if (IsRegisterSetAvailable(set))
542 {
543 switch (m_register_info_ap->m_target_arch.GetMachine())
544 {
545 case llvm::Triple::x86:
546 return &g_reg_sets_i386[set];
547 case llvm::Triple::x86_64:
548 return &g_reg_sets_x86_64[set];
549 default:
550 assert(false && "Unhandled target architecture.");
551 return NULL;
552 }
553 }
554 return NULL;
555 }
556
557 const char *
GetRegisterName(unsigned reg)558 RegisterContextPOSIX_x86::GetRegisterName(unsigned reg)
559 {
560 assert(reg < m_reg_info.num_registers && "Invalid register offset.");
561 return GetRegisterInfo()[reg].name;
562 }
563
564 lldb::ByteOrder
GetByteOrder()565 RegisterContextPOSIX_x86::GetByteOrder()
566 {
567 // Get the target process whose privileged thread was used for the register read.
568 lldb::ByteOrder byte_order = eByteOrderInvalid;
569 Process *process = CalculateProcess().get();
570
571 if (process)
572 byte_order = process->GetByteOrder();
573 return byte_order;
574 }
575
576 // Parse ymm registers and into xmm.bytes and ymmh.bytes.
CopyYMMtoXSTATE(uint32_t reg,lldb::ByteOrder byte_order)577 bool RegisterContextPOSIX_x86::CopyYMMtoXSTATE(uint32_t reg, lldb::ByteOrder byte_order)
578 {
579 if (!IsAVX(reg))
580 return false;
581
582 if (byte_order == eByteOrderLittle)
583 {
584 ::memcpy(m_fpr.xstate.fxsave.xmm[reg - m_reg_info.first_ymm].bytes,
585 m_ymm_set.ymm[reg - m_reg_info.first_ymm].bytes,
586 sizeof(XMMReg));
587 ::memcpy(m_fpr.xstate.xsave.ymmh[reg - m_reg_info.first_ymm].bytes,
588 m_ymm_set.ymm[reg - m_reg_info.first_ymm].bytes + sizeof(XMMReg),
589 sizeof(YMMHReg));
590 return true;
591 }
592
593 if (byte_order == eByteOrderBig)
594 {
595 ::memcpy(m_fpr.xstate.fxsave.xmm[reg - m_reg_info.first_ymm].bytes,
596 m_ymm_set.ymm[reg - m_reg_info.first_ymm].bytes + sizeof(XMMReg),
597 sizeof(XMMReg));
598 ::memcpy(m_fpr.xstate.xsave.ymmh[reg - m_reg_info.first_ymm].bytes,
599 m_ymm_set.ymm[reg - m_reg_info.first_ymm].bytes,
600 sizeof(YMMHReg));
601 return true;
602 }
603 return false; // unsupported or invalid byte order
604 }
605
606 // Concatenate xmm.bytes with ymmh.bytes
CopyXSTATEtoYMM(uint32_t reg,lldb::ByteOrder byte_order)607 bool RegisterContextPOSIX_x86::CopyXSTATEtoYMM(uint32_t reg, lldb::ByteOrder byte_order)
608 {
609 if (!IsAVX(reg))
610 return false;
611
612 if (byte_order == eByteOrderLittle)
613 {
614 ::memcpy(m_ymm_set.ymm[reg - m_reg_info.first_ymm].bytes,
615 m_fpr.xstate.fxsave.xmm[reg - m_reg_info.first_ymm].bytes,
616 sizeof(XMMReg));
617 ::memcpy(m_ymm_set.ymm[reg - m_reg_info.first_ymm].bytes + sizeof(XMMReg),
618 m_fpr.xstate.xsave.ymmh[reg - m_reg_info.first_ymm].bytes,
619 sizeof(YMMHReg));
620 return true;
621 }
622
623 if (byte_order == eByteOrderBig)
624 {
625 ::memcpy(m_ymm_set.ymm[reg - m_reg_info.first_ymm].bytes + sizeof(XMMReg),
626 m_fpr.xstate.fxsave.xmm[reg - m_reg_info.first_ymm].bytes,
627 sizeof(XMMReg));
628 ::memcpy(m_ymm_set.ymm[reg - m_reg_info.first_ymm].bytes,
629 m_fpr.xstate.xsave.ymmh[reg - m_reg_info.first_ymm].bytes,
630 sizeof(YMMHReg));
631 return true;
632 }
633 return false; // unsupported or invalid byte order
634 }
635
636 bool
IsRegisterSetAvailable(size_t set_index)637 RegisterContextPOSIX_x86::IsRegisterSetAvailable(size_t set_index)
638 {
639 // Note: Extended register sets are assumed to be at the end of g_reg_sets...
640 size_t num_sets = k_num_register_sets - k_num_extended_register_sets;
641
642 if (GetFPRType() == eXSAVE) // ...and to start with AVX registers.
643 ++num_sets;
644 return (set_index < num_sets);
645 }
646
647
648 // Used when parsing DWARF and EH frame information and any other
649 // object file sections that contain register numbers in them.
650 uint32_t
ConvertRegisterKindToRegisterNumber(lldb::RegisterKind kind,uint32_t num)651 RegisterContextPOSIX_x86::ConvertRegisterKindToRegisterNumber(lldb::RegisterKind kind,
652 uint32_t num)
653 {
654 const uint32_t num_regs = GetRegisterCount();
655
656 assert (kind < kNumRegisterKinds);
657 for (uint32_t reg_idx = 0; reg_idx < num_regs; ++reg_idx)
658 {
659 const RegisterInfo *reg_info = GetRegisterInfoAtIndex (reg_idx);
660
661 if (reg_info->kinds[kind] == num)
662 return reg_idx;
663 }
664
665 return LLDB_INVALID_REGNUM;
666 }
667
668