2 * mono-context.h: plat independent machine state definitions
5 * Copyright (c) 2011 Novell, Inc (http://www.novell.com)
9 #ifndef __MONO_MONO_CONTEXT_H__
10 #define __MONO_MONO_CONTEXT_H__
12 #include "mono-compiler.h"
13 #include "mono-sigcontext.h"
14 #include "mono-machine.h"
21 * General notes about mono-context.
22 * Each arch defines a MonoContext struct with all GPR regs + IP/PC.
23 * IP/PC should be the last element of the struct (this is a mild sgen constraint we could drop if needed)
24 * Macros to get/set BP, SP and IP are defined too.
25 * MONO_CONTEXT_GET_CURRENT captures the current context as close as possible. One reg might be clobbered
26 * to hold the address of the target MonoContext. It will be a caller save one, so should not be a problem.
28 #if (defined(__i386__) && !defined(MONO_CROSS_COMPILE)) || (defined(TARGET_X86))
30 /*HACK, move this to an eventual mono-signal.c*/
31 #if defined( __linux__) || defined(__sun) || defined(__APPLE__) || defined(__NetBSD__) || \
32 defined(__FreeBSD__) || defined(__OpenBSD__)
33 #define MONO_SIGNAL_USE_SIGACTION
36 #if defined(__native_client__)
37 #undef MONO_SIGNAL_USE_SIGACTION
41 /* sigcontext surrogate */
55 #if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__APPLE__)
56 # define SC_EAX sc_eax
57 # define SC_EBX sc_ebx
58 # define SC_ECX sc_ecx
59 # define SC_EDX sc_edx
60 # define SC_EBP sc_ebp
61 # define SC_EIP sc_eip
62 # define SC_ESP sc_esp
63 # define SC_EDI sc_edi
64 # define SC_ESI sc_esi
65 #elif defined(__HAIKU__)
66 # define SC_EAX regs.eax
67 # define SC_EBX regs._reserved_2[2]
68 # define SC_ECX regs.ecx
69 # define SC_EDX regs.edx
70 # define SC_EBP regs.ebp
71 # define SC_EIP regs.eip
72 # define SC_ESP regs.esp
73 # define SC_EDI regs._reserved_2[0]
74 # define SC_ESI regs._reserved_2[1]
99 #define MONO_CONTEXT_SET_IP(ctx,ip) do { (ctx)->eip = (mgreg_t)(ip); } while (0);
100 #define MONO_CONTEXT_SET_BP(ctx,bp) do { (ctx)->ebp = (mgreg_t)(bp); } while (0);
101 #define MONO_CONTEXT_SET_SP(ctx,sp) do { (ctx)->esp = (mgreg_t)(sp); } while (0);
103 #define MONO_CONTEXT_GET_IP(ctx) ((gpointer)((ctx)->eip))
104 #define MONO_CONTEXT_GET_BP(ctx) ((gpointer)((ctx)->ebp))
105 #define MONO_CONTEXT_GET_SP(ctx) ((gpointer)((ctx)->esp))
107 /*We set EAX to zero since we are clobering it anyway*/
109 #define MONO_CONTEXT_GET_CURRENT(ctx) do { \
110 void *_ptr = &(ctx); \
112 __asm mov eax, _ptr \
113 __asm mov [eax+0x00], eax \
114 __asm mov [eax+0x04], ebx \
115 __asm mov [eax+0x08], ecx \
116 __asm mov [eax+0x0c], edx \
117 __asm mov [eax+0x10], ebp \
118 __asm mov [eax+0x14], esp \
119 __asm mov [eax+0x18], esi \
120 __asm mov [eax+0x1c], edi \
122 __asm pop dword ptr [eax+0x20] \
126 #define MONO_CONTEXT_GET_CURRENT(ctx) \
127 __asm__ __volatile__( \
128 "movl $0x0, 0x00(%0)\n" \
129 "mov %%ebx, 0x04(%0)\n" \
130 "mov %%ecx, 0x08(%0)\n" \
131 "mov %%edx, 0x0c(%0)\n" \
132 "mov %%ebp, 0x10(%0)\n" \
133 "mov %%esp, 0x14(%0)\n" \
134 "mov %%esi, 0x18(%0)\n" \
135 "mov %%edi, 0x1c(%0)\n" \
137 "1: pop 0x20(%0)\n" \
143 #define MONO_ARCH_HAS_MONO_CONTEXT 1
145 #elif (defined(__x86_64__) && !defined(MONO_CROSS_COMPILE)) || (defined(TARGET_AMD64)) /* defined(__i386__) */
148 #if !defined( HOST_WIN32 ) && !defined(__native_client__) && !defined(__native_client_codegen__)
150 #define MONO_SIGNAL_USE_SIGACTION 1
174 #define MONO_CONTEXT_SET_IP(ctx,ip) do { (ctx)->rip = (mgreg_t)(ip); } while (0);
175 #define MONO_CONTEXT_SET_BP(ctx,bp) do { (ctx)->rbp = (mgreg_t)(bp); } while (0);
176 #define MONO_CONTEXT_SET_SP(ctx,esp) do { (ctx)->rsp = (mgreg_t)(esp); } while (0);
178 #define MONO_CONTEXT_GET_IP(ctx) ((gpointer)((ctx)->rip))
179 #define MONO_CONTEXT_GET_BP(ctx) ((gpointer)((ctx)->rbp))
180 #define MONO_CONTEXT_GET_SP(ctx) ((gpointer)((ctx)->rsp))
182 #if defined(__native_client__)
183 #define MONO_CONTEXT_GET_CURRENT(ctx) \
184 __asm__ __volatile__( \
185 "movq $0x0, %%nacl:0x00(%%r15, %0, 1)\n" \
186 "movq %%rbx, %%nacl:0x08(%%r15, %0, 1)\n" \
187 "movq %%rcx, %%nacl:0x10(%%r15, %0, 1)\n" \
188 "movq %%rdx, %%nacl:0x18(%%r15, %0, 1)\n" \
189 "movq %%rbp, %%nacl:0x20(%%r15, %0, 1)\n" \
190 "movq %%rsp, %%nacl:0x28(%%r15, %0, 1)\n" \
191 "movq %%rsi, %%nacl:0x30(%%r15, %0, 1)\n" \
192 "movq %%rdi, %%nacl:0x38(%%r15, %0, 1)\n" \
193 "movq %%r8, %%nacl:0x40(%%r15, %0, 1)\n" \
194 "movq %%r9, %%nacl:0x48(%%r15, %0, 1)\n" \
195 "movq %%r10, %%nacl:0x50(%%r15, %0, 1)\n" \
196 "movq %%r11, %%nacl:0x58(%%r15, %0, 1)\n" \
197 "movq %%r12, %%nacl:0x60(%%r15, %0, 1)\n" \
198 "movq %%r13, %%nacl:0x68(%%r15, %0, 1)\n" \
199 "movq %%r14, %%nacl:0x70(%%r15, %0, 1)\n" \
200 "movq %%r15, %%nacl:0x78(%%r15, %0, 1)\n" \
201 "leaq (%%rip), %%rdx\n" \
202 "movq %%rdx, %%nacl:0x80(%%r15, %0, 1)\n" \
204 : "a" ((int64_t)&(ctx)) \
207 #define MONO_CONTEXT_GET_CURRENT(ctx) \
208 __asm__ __volatile__( \
209 "movq $0x0, 0x00(%0)\n" \
210 "movq %%rbx, 0x08(%0)\n" \
211 "movq %%rcx, 0x10(%0)\n" \
212 "movq %%rdx, 0x18(%0)\n" \
213 "movq %%rbp, 0x20(%0)\n" \
214 "movq %%rsp, 0x28(%0)\n" \
215 "movq %%rsi, 0x30(%0)\n" \
216 "movq %%rdi, 0x38(%0)\n" \
217 "movq %%r8, 0x40(%0)\n" \
218 "movq %%r9, 0x48(%0)\n" \
219 "movq %%r10, 0x50(%0)\n" \
220 "movq %%r11, 0x58(%0)\n" \
221 "movq %%r12, 0x60(%0)\n" \
222 "movq %%r13, 0x68(%0)\n" \
223 "movq %%r14, 0x70(%0)\n" \
224 "movq %%r15, 0x78(%0)\n" \
225 "leaq (%%rip), %%rdx\n" \
226 "movq %%rdx, 0x80(%0)\n" \
232 #if !defined(HOST_WIN32)
233 #define MONO_ARCH_HAS_MONO_CONTEXT 1
236 #elif (defined(__arm__) && !defined(MONO_CROSS_COMPILE)) || (defined(TARGET_ARM)) /* defined(__x86_64__) */
245 /* we have the stack pointer, not the base pointer in sigcontext */
246 #define MONO_CONTEXT_SET_IP(ctx,ip) do { (ctx)->pc = (mgreg_t)ip; } while (0);
247 #define MONO_CONTEXT_SET_BP(ctx,bp) do { (ctx)->regs [ARMREG_FP] = (mgreg_t)bp; } while (0);
248 #define MONO_CONTEXT_SET_SP(ctx,bp) do { (ctx)->regs [ARMREG_SP] = (mgreg_t)bp; } while (0);
250 #define MONO_CONTEXT_GET_IP(ctx) ((gpointer)((ctx)->pc))
251 #define MONO_CONTEXT_GET_BP(ctx) ((gpointer)((ctx)->regs [ARMREG_FP]))
252 #define MONO_CONTEXT_GET_SP(ctx) ((gpointer)((ctx)->regs [ARMREG_SP]))
254 #define MONO_CONTEXT_GET_CURRENT(ctx) do { \
255 __asm__ __volatile__( \
259 "ldr r1, [sp, #4]\n" \
261 "ldr r1, [sp, #0]\n" \
263 "stmia r0!, {r2-r12}\n" \
274 ctx.pc = ctx.regs [15]; \
278 #elif defined(__mono_ppc__) /* defined(__arm__) */
280 /* we define our own structure and we'll copy the data
281 * from sigcontext/ucontext/mach when we need it.
282 * This also makes us save stack space and time when copying
283 * We might also want to add an additional field to propagate
284 * the original context from the signal handler.
289 mgreg_t regs [19]; /*FIXME, this must be changed to 32 for sgen*/
293 /* we have the stack pointer, not the base pointer in sigcontext */
294 #define MONO_CONTEXT_SET_IP(ctx,ip) do { (ctx)->sc_ir = (gulong)ip; } while (0);
295 /* FIXME: should be called SET_SP */
296 #define MONO_CONTEXT_SET_BP(ctx,bp) do { (ctx)->sc_sp = (gulong)bp; } while (0);
297 #define MONO_CONTEXT_SET_SP(ctx,sp) do { (ctx)->sc_sp = (gulong)sp; } while (0);
299 #define MONO_CONTEXT_GET_IP(ctx) ((gpointer)((ctx)->sc_ir))
300 #define MONO_CONTEXT_GET_BP(ctx) ((gpointer)((ctx)->regs [ppc_r31-13]))
301 #define MONO_CONTEXT_GET_SP(ctx) ((gpointer)((ctx)->sc_sp))
303 #elif defined(__sparc__) || defined(sparc) /* defined(__mono_ppc__) */
305 typedef struct MonoContext {
311 #define MONO_CONTEXT_SET_IP(ctx,eip) do { (ctx)->ip = (gpointer)(eip); } while (0);
312 #define MONO_CONTEXT_SET_BP(ctx,ebp) do { (ctx)->fp = (gpointer*)(ebp); } while (0);
313 #define MONO_CONTEXT_SET_SP(ctx,esp) do { (ctx)->sp = (gpointer*)(esp); } while (0);
315 #define MONO_CONTEXT_GET_IP(ctx) ((gpointer)((ctx)->ip))
316 #define MONO_CONTEXT_GET_BP(ctx) ((gpointer)((ctx)->fp))
317 #define MONO_CONTEXT_GET_SP(ctx) ((gpointer)((ctx)->sp))
319 #elif defined(__ia64__) /*defined(__sparc__) || defined(sparc) */
321 #ifndef UNW_LOCAL_ONLY
323 #define UNW_LOCAL_ONLY
324 #include <libunwind.h>
328 typedef struct MonoContext {
330 /* Whenever the ip in 'cursor' points to the ip where the exception happened */
331 /* This is true for the initial context for exceptions thrown from signal handlers */
335 /*XXX SET_BP is missing*/
336 #define MONO_CONTEXT_SET_IP(ctx,eip) do { int err = unw_set_reg (&(ctx)->cursor, UNW_IA64_IP, (unw_word_t)(eip)); g_assert (err == 0); } while (0)
337 #define MONO_CONTEXT_SET_SP(ctx,esp) do { int err = unw_set_reg (&(ctx)->cursor, UNW_IA64_SP, (unw_word_t)(esp)); g_assert (err == 0); } while (0)
339 #define MONO_CONTEXT_GET_IP(ctx) ((gpointer)(mono_ia64_context_get_ip ((ctx))))
340 #define MONO_CONTEXT_GET_BP(ctx) ((gpointer)(mono_ia64_context_get_fp ((ctx))))
341 #define MONO_CONTEXT_GET_SP(ctx) ((gpointer)(mono_ia64_context_get_sp ((ctx))))
343 static inline unw_word_t
344 mono_ia64_context_get_ip (MonoContext *ctx)
349 err = unw_get_reg (&ctx->cursor, UNW_IA64_IP, &ip);
352 if (ctx->precise_ip) {
355 /* Subtrack 1 so ip points into the actual instruction */
360 static inline unw_word_t
361 mono_ia64_context_get_sp (MonoContext *ctx)
366 err = unw_get_reg (&ctx->cursor, UNW_IA64_SP, &sp);
372 static inline unw_word_t
373 mono_ia64_context_get_fp (MonoContext *ctx)
375 unw_cursor_t new_cursor;
382 err = unw_get_reg (&ctx->cursor, UNW_IA64_SP, &sp);
385 err = unw_get_reg (&ctx->cursor, UNW_IA64_IP, &ip);
389 /* fp is the SP of the parent frame */
390 new_cursor = ctx->cursor;
392 err = unw_step (&new_cursor);
395 err = unw_get_reg (&new_cursor, UNW_IA64_SP, &fp);
401 #elif ((defined(__mips__) && !defined(MONO_CROSS_COMPILE)) || (defined(TARGET_MIPS))) && SIZEOF_REGISTER == 4 /* defined(__ia64__) */
405 mgreg_t sc_regs [32];
406 gfloat sc_fpregs [32];
409 #define MONO_CONTEXT_SET_IP(ctx,ip) do { (ctx)->sc_pc = (mgreg_t)(ip); } while (0);
410 #define MONO_CONTEXT_SET_BP(ctx,bp) do { (ctx)->sc_regs[mips_fp] = (mgreg_t)(bp); } while (0);
411 #define MONO_CONTEXT_SET_SP(ctx,sp) do { (ctx)->sc_regs[mips_sp] = (mgreg_t)(sp); } while (0);
413 #define MONO_CONTEXT_GET_IP(ctx) ((gpointer)((ctx)->sc_pc))
414 #define MONO_CONTEXT_GET_BP(ctx) ((gpointer)((ctx)->sc_regs[mips_fp]))
415 #define MONO_CONTEXT_GET_SP(ctx) ((gpointer)((ctx)->sc_regs[mips_sp]))
417 #define MONO_CONTEXT_GET_CURRENT(ctx) \
418 __asm__ __volatile__( \
429 "sw $10,40(%0)\n\t" \
430 "sw $11,44(%0)\n\t" \
431 "sw $12,48(%0)\n\t" \
432 "sw $13,52(%0)\n\t" \
433 "sw $14,56(%0)\n\t" \
434 "sw $15,60(%0)\n\t" \
435 "sw $16,64(%0)\n\t" \
436 "sw $17,68(%0)\n\t" \
437 "sw $18,72(%0)\n\t" \
438 "sw $19,76(%0)\n\t" \
439 "sw $20,80(%0)\n\t" \
440 "sw $21,84(%0)\n\t" \
441 "sw $22,88(%0)\n\t" \
442 "sw $23,92(%0)\n\t" \
443 "sw $24,96(%0)\n\t" \
444 "sw $25,100(%0)\n\t" \
445 "sw $26,104(%0)\n\t" \
446 "sw $27,108(%0)\n\t" \
447 "sw $28,112(%0)\n\t" \
448 "sw $29,116(%0)\n\t" \
449 "sw $30,120(%0)\n\t" \
450 "sw $31,124(%0)\n\t" \
451 : : "r" (&(ctx).sc_regs [0]) \
455 #elif defined(__s390x__)
457 #define MONO_ARCH_HAS_MONO_CONTEXT 1
459 typedef struct ucontext MonoContext;
461 #define MONO_CONTEXT_SET_IP(ctx,ip) \
463 (ctx)->uc_mcontext.gregs[14] = (unsigned long)ip; \
464 (ctx)->uc_mcontext.psw.addr = (unsigned long)ip; \
467 #define MONO_CONTEXT_SET_SP(ctx,bp) MONO_CONTEXT_SET_BP((ctx),(bp))
468 #define MONO_CONTEXT_SET_BP(ctx,bp) \
470 (ctx)->uc_mcontext.gregs[15] = (unsigned long)bp; \
471 (ctx)->uc_stack.ss_sp = (void*)bp; \
474 #define MONO_CONTEXT_GET_IP(ctx) (gpointer) (ctx)->uc_mcontext.psw.addr
475 #define MONO_CONTEXT_GET_SP(ctx) ((gpointer)((ctx)->uc_mcontext.gregs[15]))
476 #define MONO_CONTEXT_GET_BP(ctx) ((gpointer)((ctx)->uc_mcontext.gregs[11]))
478 #define MONO_CONTEXT_GET_CURRENT(ctx) \
479 __asm__ __volatile__( \
480 "stmg %%r0,%%r15,0(%0)\n" \
481 : : "r" (&(ctx).uc_mcontext.gregs[0]) \
487 #error "Implement mono-context for the current arch"
491 void mono_sigctx_to_monoctx (void *sigctx, MonoContext *mctx) MONO_INTERNAL;
492 void mono_monoctx_to_sigctx (MonoContext *mctx, void *sigctx) MONO_INTERNAL;
494 #endif /* __MONO_MONO_CONTEXT_H__ */