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 #if !defined(HOST_WIN32)
125 #define MONO_ARCH_HAS_MONO_CONTEXT 1
128 #elif defined(__x86_64__) /* defined(__i386__) */
131 #if !defined( HOST_WIN32 ) && !defined(__native_client__) && !defined(__native_client_codegen__)
133 #define MONO_SIGNAL_USE_SIGACTION 1
157 #define MONO_CONTEXT_SET_IP(ctx,ip) do { (ctx)->rip = (mgreg_t)(ip); } while (0);
158 #define MONO_CONTEXT_SET_BP(ctx,bp) do { (ctx)->rbp = (mgreg_t)(bp); } while (0);
159 #define MONO_CONTEXT_SET_SP(ctx,esp) do { (ctx)->rsp = (mgreg_t)(esp); } while (0);
161 #define MONO_CONTEXT_GET_IP(ctx) ((gpointer)((ctx)->rip))
162 #define MONO_CONTEXT_GET_BP(ctx) ((gpointer)((ctx)->rbp))
163 #define MONO_CONTEXT_GET_SP(ctx) ((gpointer)((ctx)->rsp))
165 #define MONO_CONTEXT_GET_CURRENT(ctx) \
166 __asm__ __volatile__( \
167 "movq $0x0, 0x00(%0)\n" \
168 "movq %%rbx, 0x08(%0)\n" \
169 "movq %%rcx, 0x10(%0)\n" \
170 "movq %%rdx, 0x18(%0)\n" \
171 "movq %%rbp, 0x20(%0)\n" \
172 "movq %%rsp, 0x28(%0)\n" \
173 "movq %%rsi, 0x30(%0)\n" \
174 "movq %%rdi, 0x38(%0)\n" \
175 "movq %%r8, 0x40(%0)\n" \
176 "movq %%r9, 0x48(%0)\n" \
177 "movq %%r10, 0x50(%0)\n" \
178 "movq %%r11, 0x58(%0)\n" \
179 "movq %%r12, 0x60(%0)\n" \
180 "movq %%r13, 0x68(%0)\n" \
181 "movq %%r14, 0x70(%0)\n" \
182 "movq %%r15, 0x78(%0)\n" \
183 "leaq (%%rip), %%rdx\n" \
184 "movq %%rdx, 0x80(%0)\n" \
189 #if !defined(HOST_WIN32)
190 #define MONO_ARCH_HAS_MONO_CONTEXT 1
193 #elif defined(__arm__) /* defined(__x86_64__) */
202 /* we have the stack pointer, not the base pointer in sigcontext */
203 #define MONO_CONTEXT_SET_IP(ctx,ip) do { (ctx)->eip = (int)ip; } while (0);
204 #define MONO_CONTEXT_SET_BP(ctx,bp) do { (ctx)->regs [ARMREG_FP] = (int)bp; } while (0);
205 #define MONO_CONTEXT_SET_SP(ctx,bp) do { (ctx)->esp = (int)bp; } while (0);
207 #define MONO_CONTEXT_GET_IP(ctx) ((gpointer)((ctx)->eip))
208 #define MONO_CONTEXT_GET_BP(ctx) ((gpointer)((ctx)->regs [ARMREG_FP]))
209 #define MONO_CONTEXT_GET_SP(ctx) ((gpointer)((ctx)->esp))
212 #define MONO_CONTEXT_GET_CURRENT(ctx) do { \
213 g_assert_not_reached (); \
216 #elif defined(__mono_ppc__) /* defined(__arm__) */
218 /* we define our own structure and we'll copy the data
219 * from sigcontext/ucontext/mach when we need it.
220 * This also makes us save stack space and time when copying
221 * We might also want to add an additional field to propagate
222 * the original context from the signal handler.
227 mgreg_t regs [19]; /*FIXME, this must be changed to 32 for sgen*/
231 /* we have the stack pointer, not the base pointer in sigcontext */
232 #define MONO_CONTEXT_SET_IP(ctx,ip) do { (ctx)->sc_ir = (gulong)ip; } while (0);
233 /* FIXME: should be called SET_SP */
234 #define MONO_CONTEXT_SET_BP(ctx,bp) do { (ctx)->sc_sp = (gulong)bp; } while (0);
235 #define MONO_CONTEXT_SET_SP(ctx,sp) do { (ctx)->sc_sp = (gulong)sp; } while (0);
237 #define MONO_CONTEXT_GET_IP(ctx) ((gpointer)((ctx)->sc_ir))
238 #define MONO_CONTEXT_GET_BP(ctx) ((gpointer)((ctx)->regs [ppc_r31-13]))
239 #define MONO_CONTEXT_GET_SP(ctx) ((gpointer)((ctx)->sc_sp))
241 #elif defined(__sparc__) || defined(sparc) /* defined(__mono_ppc__) */
243 typedef struct MonoContext {
249 #define MONO_CONTEXT_SET_IP(ctx,eip) do { (ctx)->ip = (gpointer)(eip); } while (0);
250 #define MONO_CONTEXT_SET_BP(ctx,ebp) do { (ctx)->fp = (gpointer*)(ebp); } while (0);
251 #define MONO_CONTEXT_SET_SP(ctx,esp) do { (ctx)->sp = (gpointer*)(esp); } while (0);
253 #define MONO_CONTEXT_GET_IP(ctx) ((gpointer)((ctx)->ip))
254 #define MONO_CONTEXT_GET_BP(ctx) ((gpointer)((ctx)->fp))
255 #define MONO_CONTEXT_GET_SP(ctx) ((gpointer)((ctx)->sp))
257 #elif defined(__ia64__) /*defined(__sparc__) || defined(sparc) */
259 #ifndef UNW_LOCAL_ONLY
261 #define UNW_LOCAL_ONLY
262 #include <libunwind.h>
266 typedef struct MonoContext {
268 /* Whenever the ip in 'cursor' points to the ip where the exception happened */
269 /* This is true for the initial context for exceptions thrown from signal handlers */
273 /*XXX SET_BP is missing*/
274 #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)
275 #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)
277 #define MONO_CONTEXT_GET_IP(ctx) ((gpointer)(mono_ia64_context_get_ip ((ctx))))
278 #define MONO_CONTEXT_GET_BP(ctx) ((gpointer)(mono_ia64_context_get_fp ((ctx))))
279 #define MONO_CONTEXT_GET_SP(ctx) ((gpointer)(mono_ia64_context_get_sp ((ctx))))
281 static inline unw_word_t
282 mono_ia64_context_get_ip (MonoContext *ctx)
287 err = unw_get_reg (&ctx->cursor, UNW_IA64_IP, &ip);
290 if (ctx->precise_ip) {
293 /* Subtrack 1 so ip points into the actual instruction */
298 static inline unw_word_t
299 mono_ia64_context_get_sp (MonoContext *ctx)
304 err = unw_get_reg (&ctx->cursor, UNW_IA64_SP, &sp);
310 static inline unw_word_t
311 mono_ia64_context_get_fp (MonoContext *ctx)
313 unw_cursor_t new_cursor;
320 err = unw_get_reg (&ctx->cursor, UNW_IA64_SP, &sp);
323 err = unw_get_reg (&ctx->cursor, UNW_IA64_IP, &ip);
327 /* fp is the SP of the parent frame */
328 new_cursor = ctx->cursor;
330 err = unw_step (&new_cursor);
333 err = unw_get_reg (&new_cursor, UNW_IA64_SP, &fp);
339 #elif defined(__mips__) && SIZEOF_REGISTER == 4 /* defined(__ia64__) */
341 /* we define our own structure and we'll copy the data
342 * from sigcontext/ucontext/mach when we need it.
343 * This also makes us save stack space and time when copying
344 * We might also want to add an additional field to propagate
345 * the original context from the signal handler.
349 guint32 sc_regs [32];
350 gfloat sc_fpregs [32];
353 /* we have the stack pointer, not the base pointer in sigcontext */
354 #define MONO_CONTEXT_SET_IP(ctx,ip) do { (ctx)->sc_pc = (int)(ip); } while (0);
355 #define MONO_CONTEXT_SET_BP(ctx,bp) do { (ctx)->sc_regs[mips_fp] = (int)(bp); } while (0);
356 #define MONO_CONTEXT_SET_SP(ctx,sp) do { (ctx)->sc_regs[mips_sp] = (int)(sp); } while (0);
358 #define MONO_CONTEXT_GET_IP(ctx) ((gpointer)((ctx)->sc_pc))
359 #define MONO_CONTEXT_GET_BP(ctx) ((gpointer)((ctx)->sc_regs[mips_fp]))
360 #define MONO_CONTEXT_GET_SP(ctx) ((gpointer)((ctx)->sc_regs[mips_sp]))
362 #elif defined(__s390x__)
364 #define MONO_ARCH_HAS_MONO_CONTEXT 1
366 typedef struct ucontext MonoContext;
368 #define MONO_CONTEXT_SET_IP(ctx,ip) \
370 (ctx)->uc_mcontext.gregs[14] = (unsigned long)ip; \
371 (ctx)->uc_mcontext.psw.addr = (unsigned long)ip; \
374 #define MONO_CONTEXT_SET_SP(ctx,bp) MONO_CONTEXT_SET_BP((ctx),(bp))
375 #define MONO_CONTEXT_SET_BP(ctx,bp) \
377 (ctx)->uc_mcontext.gregs[15] = (unsigned long)bp; \
378 (ctx)->uc_stack.ss_sp = (void*)bp; \
381 #define MONO_CONTEXT_GET_IP(ctx) (gpointer) (ctx)->uc_mcontext.psw.addr
382 #define MONO_CONTEXT_GET_BP(ctx) MONO_CONTEXT_GET_SP((ctx))
383 #define MONO_CONTEXT_GET_SP(ctx) ((gpointer)((ctx)->uc_mcontext.gregs[15]))
385 #define MONO_CONTEXT_GET_CURRENT(ctx) \
386 __asm__ __volatile__( \
387 "stmg %%r0,%%r15,0(%0)\n" \
388 : : "r" (&(ctx).uc_mcontext.gregs[0]) \
394 #error "Implement mono-context for the current arch"
398 void mono_sigctx_to_monoctx (void *sigctx, MonoContext *mctx) MONO_INTERNAL;
399 void mono_monoctx_to_sigctx (MonoContext *mctx, void *sigctx) MONO_INTERNAL;
401 #endif /* __MONO_MONO_CONTEXT_H__ */