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.
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*/
108 #define MONO_CONTEXT_GET_CURRENT(ctx) \
109 __asm__ __volatile__( \
110 "movl $0x0, 0x00(%0)\n" \
111 "mov %%ebx, 0x04(%0)\n" \
112 "mov %%ecx, 0x08(%0)\n" \
113 "mov %%edx, 0x0c(%0)\n" \
114 "mov %%ebp, 0x10(%0)\n" \
115 "mov %%esp, 0x14(%0)\n" \
116 "mov %%esi, 0x18(%0)\n" \
117 "mov %%edi, 0x1c(%0)\n" \
119 "1: pop 0x20(%0)\n" \
124 #define MONO_ARCH_HAS_MONO_CONTEXT 1
126 #elif defined(__x86_64__) /* defined(__i386__) */
129 #if !defined( HOST_WIN32 ) && !defined(__native_client__) && !defined(__native_client_codegen__)
131 #define MONO_SIGNAL_USE_SIGACTION 1
155 #define MONO_CONTEXT_SET_IP(ctx,ip) do { (ctx)->rip = (mgreg_t)(ip); } while (0);
156 #define MONO_CONTEXT_SET_BP(ctx,bp) do { (ctx)->rbp = (mgreg_t)(bp); } while (0);
157 #define MONO_CONTEXT_SET_SP(ctx,esp) do { (ctx)->rsp = (mgreg_t)(esp); } while (0);
159 #define MONO_CONTEXT_GET_IP(ctx) ((gpointer)((ctx)->rip))
160 #define MONO_CONTEXT_GET_BP(ctx) ((gpointer)((ctx)->rbp))
161 #define MONO_CONTEXT_GET_SP(ctx) ((gpointer)((ctx)->rsp))
163 #define MONO_CONTEXT_GET_CURRENT(ctx) \
164 __asm__ __volatile__( \
165 "movq $0x0, 0x00(%0)\n" \
166 "movq %%rbx, 0x08(%0)\n" \
167 "movq %%rcx, 0x10(%0)\n" \
168 "movq %%rdx, 0x18(%0)\n" \
169 "movq %%rbp, 0x20(%0)\n" \
170 "movq %%rsp, 0x28(%0)\n" \
171 "movq %%rsi, 0x30(%0)\n" \
172 "movq %%rdi, 0x38(%0)\n" \
173 "movq %%r8, 0x40(%0)\n" \
174 "movq %%r9, 0x48(%0)\n" \
175 "movq %%r10, 0x50(%0)\n" \
176 "movq %%r11, 0x58(%0)\n" \
177 "movq %%r12, 0x60(%0)\n" \
178 "movq %%r13, 0x68(%0)\n" \
179 "movq %%r14, 0x70(%0)\n" \
180 "movq %%r15, 0x78(%0)\n" \
181 "leaq (%%rip), %%rdx\n" \
182 "movq %%rdx, 0x80(%0)\n" \
187 #define MONO_ARCH_HAS_MONO_CONTEXT 1
189 #elif defined(__arm__) /* defined(__x86_64__) */
198 /* we have the stack pointer, not the base pointer in sigcontext */
199 #define MONO_CONTEXT_SET_IP(ctx,ip) do { (ctx)->eip = (int)ip; } while (0);
200 #define MONO_CONTEXT_SET_BP(ctx,bp) do { (ctx)->regs [ARMREG_FP] = (int)bp; } while (0);
201 #define MONO_CONTEXT_SET_SP(ctx,bp) do { (ctx)->esp = (int)bp; } while (0);
203 #define MONO_CONTEXT_GET_IP(ctx) ((gpointer)((ctx)->eip))
204 #define MONO_CONTEXT_GET_BP(ctx) ((gpointer)((ctx)->regs [ARMREG_FP]))
205 #define MONO_CONTEXT_GET_SP(ctx) ((gpointer)((ctx)->esp))
208 #define MONO_CONTEXT_GET_CURRENT(ctx) do { \
209 g_assert_not_reached (); \
212 #elif defined(__mono_ppc__) /* defined(__arm__) */
214 /* we define our own structure and we'll copy the data
215 * from sigcontext/ucontext/mach when we need it.
216 * This also makes us save stack space and time when copying
217 * We might also want to add an additional field to propagate
218 * the original context from the signal handler.
223 mgreg_t regs [19]; /*FIXME, this must be changed to 32 for sgen*/
227 /* we have the stack pointer, not the base pointer in sigcontext */
228 #define MONO_CONTEXT_SET_IP(ctx,ip) do { (ctx)->sc_ir = (gulong)ip; } while (0);
229 /* FIXME: should be called SET_SP */
230 #define MONO_CONTEXT_SET_BP(ctx,bp) do { (ctx)->sc_sp = (gulong)bp; } while (0);
231 #define MONO_CONTEXT_SET_SP(ctx,sp) do { (ctx)->sc_sp = (gulong)sp; } while (0);
233 #define MONO_CONTEXT_GET_IP(ctx) ((gpointer)((ctx)->sc_ir))
234 #define MONO_CONTEXT_GET_BP(ctx) ((gpointer)((ctx)->regs [ppc_r31-13]))
235 #define MONO_CONTEXT_GET_SP(ctx) ((gpointer)((ctx)->sc_sp))
237 #elif defined(__sparc__) || defined(sparc) /* defined(__mono_ppc__) */
239 typedef struct MonoContext {
245 #define MONO_CONTEXT_SET_IP(ctx,eip) do { (ctx)->ip = (gpointer)(eip); } while (0);
246 #define MONO_CONTEXT_SET_BP(ctx,ebp) do { (ctx)->fp = (gpointer*)(ebp); } while (0);
247 #define MONO_CONTEXT_SET_SP(ctx,esp) do { (ctx)->sp = (gpointer*)(esp); } while (0);
249 #define MONO_CONTEXT_GET_IP(ctx) ((gpointer)((ctx)->ip))
250 #define MONO_CONTEXT_GET_BP(ctx) ((gpointer)((ctx)->fp))
251 #define MONO_CONTEXT_GET_SP(ctx) ((gpointer)((ctx)->sp))
253 #elif defined(__ia64__) /*defined(__sparc__) || defined(sparc) */
255 #ifndef UNW_LOCAL_ONLY
257 #define UNW_LOCAL_ONLY
258 #include <libunwind.h>
262 typedef struct MonoContext {
264 /* Whenever the ip in 'cursor' points to the ip where the exception happened */
265 /* This is true for the initial context for exceptions thrown from signal handlers */
269 /*XXX SET_BP is missing*/
270 #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)
271 #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)
273 #define MONO_CONTEXT_GET_IP(ctx) ((gpointer)(mono_ia64_context_get_ip ((ctx))))
274 #define MONO_CONTEXT_GET_BP(ctx) ((gpointer)(mono_ia64_context_get_fp ((ctx))))
275 #define MONO_CONTEXT_GET_SP(ctx) ((gpointer)(mono_ia64_context_get_sp ((ctx))))
277 static inline unw_word_t
278 mono_ia64_context_get_ip (MonoContext *ctx)
283 err = unw_get_reg (&ctx->cursor, UNW_IA64_IP, &ip);
286 if (ctx->precise_ip) {
289 /* Subtrack 1 so ip points into the actual instruction */
294 static inline unw_word_t
295 mono_ia64_context_get_sp (MonoContext *ctx)
300 err = unw_get_reg (&ctx->cursor, UNW_IA64_SP, &sp);
306 static inline unw_word_t
307 mono_ia64_context_get_fp (MonoContext *ctx)
309 unw_cursor_t new_cursor;
316 err = unw_get_reg (&ctx->cursor, UNW_IA64_SP, &sp);
319 err = unw_get_reg (&ctx->cursor, UNW_IA64_IP, &ip);
323 /* fp is the SP of the parent frame */
324 new_cursor = ctx->cursor;
326 err = unw_step (&new_cursor);
329 err = unw_get_reg (&new_cursor, UNW_IA64_SP, &fp);
335 #elif defined(__mips__) && SIZEOF_REGISTER == 4 /* defined(__ia64__) */
337 /* we define our own structure and we'll copy the data
338 * from sigcontext/ucontext/mach when we need it.
339 * This also makes us save stack space and time when copying
340 * We might also want to add an additional field to propagate
341 * the original context from the signal handler.
345 guint32 sc_regs [32];
346 gfloat sc_fpregs [32];
349 /* we have the stack pointer, not the base pointer in sigcontext */
350 #define MONO_CONTEXT_SET_IP(ctx,ip) do { (ctx)->sc_pc = (int)(ip); } while (0);
351 #define MONO_CONTEXT_SET_BP(ctx,bp) do { (ctx)->sc_regs[mips_fp] = (int)(bp); } while (0);
352 #define MONO_CONTEXT_SET_SP(ctx,sp) do { (ctx)->sc_regs[mips_sp] = (int)(sp); } while (0);
354 #define MONO_CONTEXT_GET_IP(ctx) ((gpointer)((ctx)->sc_pc))
355 #define MONO_CONTEXT_GET_BP(ctx) ((gpointer)((ctx)->sc_regs[mips_fp]))
356 #define MONO_CONTEXT_GET_SP(ctx) ((gpointer)((ctx)->sc_regs[mips_sp]))
358 #elif defined(__s390x__)
360 #define MONO_ARCH_HAS_MONO_CONTEXT 1
362 typedef struct ucontext MonoContext;
364 #define MONO_CONTEXT_SET_IP(ctx,ip) \
366 (ctx)->uc_mcontext.gregs[14] = (unsigned long)ip; \
367 (ctx)->uc_mcontext.psw.addr = (unsigned long)ip; \
370 #define MONO_CONTEXT_SET_SP(ctx,bp) MONO_CONTEXT_SET_BP((ctx),(bp))
371 #define MONO_CONTEXT_SET_BP(ctx,bp) \
373 (ctx)->uc_mcontext.gregs[15] = (unsigned long)bp; \
374 (ctx)->uc_stack.ss_sp = (void*)bp; \
377 #define MONO_CONTEXT_GET_IP(ctx) (gpointer) (ctx)->uc_mcontext.psw.addr
378 #define MONO_CONTEXT_GET_BP(ctx) MONO_CONTEXT_GET_SP((ctx))
379 #define MONO_CONTEXT_GET_SP(ctx) ((gpointer)((ctx)->uc_mcontext.gregs[15]))
381 #define MONO_CONTEXT_GET_CURRENT(ctx) \
382 __asm__ __volatile__( \
383 "stmg %%r0,%%r15,0(%0)\n" \
384 : : "r" (&(ctx).uc_mcontext.gregs[0]) \
390 #error "Implement mono-context for the current arch"
394 void mono_sigctx_to_monoctx (void *sigctx, MonoContext *mctx) MONO_INTERNAL;
395 void mono_monoctx_to_sigctx (MonoContext *mctx, void *sigctx) MONO_INTERNAL;
397 #endif /* __MONO_MONO_CONTEXT_H__ */