2 * Copyright 2011 Xamarin Inc
5 #ifndef __MONO_MINI_ARM_H__
6 #define __MONO_MINI_ARM_H__
8 #include <mono/arch/arm/arm-codegen.h>
9 #include <mono/utils/mono-context.h>
12 #ifdef __native_client_codegen__
13 #define kNaClAlignmentARM 16
14 #define kNaClAlignmentMaskARM (kNaClAlignmentARM - 1)
15 #define kNaClLengthOfCallImm 4
18 #if defined(ARM_FPU_NONE)
19 #define MONO_ARCH_SOFT_FLOAT_FALLBACK 1
22 #ifdef ARM_FPU_VFP_HARD
23 #error "hardfp-abi not yet supported."
26 #if defined(__ARM_EABI__)
27 #if G_BYTE_ORDER == G_LITTLE_ENDIAN
28 #define ARM_ARCHITECTURE "armel"
30 #define ARM_ARCHITECTURE "armeb"
33 #define ARM_ARCHITECTURE "arm"
36 #if defined(ARM_FPU_VFP)
37 #define ARM_FP_MODEL "vfp"
38 #elif defined(ARM_FPU_NONE)
39 #define ARM_FP_MODEL "vfp+fallback"
40 #elif defined(ARM_FPU_VFP_HARD)
41 #define ARM_FP_MODEL "vfp+hard"
43 #error "At least one of ARM_FPU_NONE, ARM_FPU_VFP or ARM_FPU_VFP_HARD must be defined."
46 #define MONO_ARCH_ARCHITECTURE ARM_ARCHITECTURE "," ARM_FP_MODEL
48 #define MONO_ARCH_CPU_SPEC arm_cpu_desc
50 #if G_BYTE_ORDER == G_LITTLE_ENDIAN
51 #define ARM_LSW_REG ARMREG_R0
52 #define ARM_MSW_REG ARMREG_R1
54 #define ARM_LSW_REG ARMREG_R1
55 #define ARM_MSW_REG ARMREG_R0
58 #define MONO_MAX_IREGS 16
59 #define MONO_MAX_FREGS 16
61 #define MONO_SAVED_GREGS 10 /* r4-r11, ip, lr */
62 #define MONO_SAVED_FREGS 8
64 /* r4-r11, ip, lr: registers saved in the LMF */
65 #define MONO_ARM_REGSAVE_MASK 0x5ff0
66 #define MONO_ARM_FIRST_SAVED_REG ARMREG_R4
67 #define MONO_ARM_NUM_SAVED_REGS 10
69 /* Parameters used by the register allocator */
71 #define MONO_ARCH_CALLEE_REGS ((1<<ARMREG_R0) | (1<<ARMREG_R1) | (1<<ARMREG_R2) | (1<<ARMREG_R3) | (1<<ARMREG_IP))
72 #define MONO_ARCH_CALLEE_SAVED_REGS ((1<<ARMREG_V1) | (1<<ARMREG_V2) | (1<<ARMREG_V3) | (1<<ARMREG_V4) | (1<<ARMREG_V5) | (1<<ARMREG_V6) | (1<<ARMREG_V7))
74 /* Every double precision vfp register, d0/d1 is reserved for a scratch reg */
75 #define MONO_ARCH_CALLEE_FREGS 0x55555550
76 #define MONO_ARCH_CALLEE_SAVED_FREGS 0
78 #define MONO_ARCH_USE_FPSTACK FALSE
79 #define MONO_ARCH_FPSTACK_SIZE 0
81 #define MONO_ARCH_INST_SREG2_MASK(ins) (0)
83 #define MONO_ARCH_INST_FIXED_REG(desc) \
84 (mono_arch_is_soft_float () ? \
85 ((desc) == 'l' || (desc) == 'f' || (desc) == 'g' ? ARM_LSW_REG : (desc) == 'a' ? ARMREG_R0 : -1) : \
86 ((desc) == 'l' ? ARM_LSW_REG : (desc) == 'a' ? ARMREG_R0 : -1))
88 #define MONO_ARCH_INST_IS_REGPAIR(desc) \
89 (mono_arch_is_soft_float () ? \
90 ((desc) == 'l' || (desc) == 'L' || (desc) == 'f' || (desc) == 'g') : \
91 ((desc) == 'l' || (desc) == 'L'))
93 #define MONO_ARCH_INST_IS_FLOAT(desc) \
94 (mono_arch_is_soft_float () ? \
96 ((desc) == 'f' || (desc) == 'g'))
98 #define MONO_ARCH_INST_REGPAIR_REG2(desc,hreg1) ((desc) == 'l' || (desc) == 'f' || (desc) == 'g' ? ARM_MSW_REG : -1)
100 #define MONO_ARCH_FRAME_ALIGNMENT 8
102 /* fixme: align to 16byte instead of 32byte (we align to 32byte to get
103 * reproduceable results for benchmarks */
104 #define MONO_ARCH_CODE_ALIGNMENT 32
106 /* Return value marshalling for calls between gsharedvt and normal code */
108 GSHAREDVT_RET_NONE = 0,
109 GSHAREDVT_RET_IREG = 1,
110 GSHAREDVT_RET_IREGS = 2,
111 GSHAREDVT_RET_I1 = 3,
112 GSHAREDVT_RET_U1 = 4,
113 GSHAREDVT_RET_I2 = 5,
115 } GSharedVtRetMarshal;
118 /* Method address to call */
120 /* The trampoline reads this, so keep the size explicit */
122 /* If ret_marshal != NONE, this is the reg of the vret arg, else -1 */
124 /* The stack slot where the return value will be stored */
126 int stack_usage, map_count;
127 /* If not -1, then make a virtual call using this vtable offset */
129 /* If 1, make an indirect call to the address in the rgctx reg */
131 /* Whenever this is a in or an out call */
133 /* Maps stack slots/registers in the caller to the stack slots/registers in the callee */
134 /* A negative value means a register, i.e. -1=r0, -2=r1 etc. */
135 int map [MONO_ZERO_LEN_ARRAY];
138 void arm_patch (guchar *code, const guchar *target);
139 guint8* mono_arm_emit_load_imm (guint8 *code, int dreg, guint32 val);
140 int mono_arm_is_rotated_imm8 (guint32 val, gint *rot_amount);
143 mono_arm_throw_exception_by_token (guint32 type_token, mgreg_t pc, mgreg_t sp, mgreg_t *int_regs, gdouble *fp_regs);
146 mono_arm_start_gsharedvt_call (GSharedVtCallInfo *info, gpointer *caller, gpointer *callee, gpointer mrgctx_reg) MONO_INTERNAL;
149 MONO_ARM_FPU_NONE = 0,
150 MONO_ARM_FPU_VFP = 1,
151 MONO_ARM_FPU_VFP_HARD = 2
154 /* keep the size of the structure a multiple of 8 */
157 * If the second lowest bit is set to 1, then this is a MonoLMFExt structure, and
158 * the other fields are not valid.
160 gpointer previous_lmf;
162 /* This is only set in trampoline LMF frames */
167 /* all but sp and pc: matches the PUSH instruction layout in the trampolines
168 * 0-4 should be considered undefined (execpt in the magic tramp)
174 typedef struct MonoCompileArch {
175 gpointer seq_point_info_var, ss_trigger_page_var;
176 gpointer seq_point_read_var, seq_point_ss_method_var;
177 gpointer seq_point_bp_method_var;
178 gboolean omit_fp, omit_fp_computed;
182 #define MONO_ARCH_EMULATE_FCONV_TO_I8 1
183 #define MONO_ARCH_EMULATE_LCONV_TO_R8 1
184 #define MONO_ARCH_EMULATE_LCONV_TO_R4 1
185 #define MONO_ARCH_EMULATE_LCONV_TO_R8_UN 1
186 #define MONO_ARCH_EMULATE_FREM 1
187 #define MONO_ARCH_EMULATE_DIV 1
188 #define MONO_ARCH_EMULATE_CONV_R8_UN 1
189 #define MONO_ARCH_EMULATE_MUL_OVF 1
190 //#define MONO_ARCH_BIGMUL_INTRINS 1
192 #define ARM_FIRST_ARG_REG 0
193 #define ARM_LAST_ARG_REG 3
195 #define MONO_ARCH_USE_SIGACTION 1
197 #if defined(__native_client__)
198 #undef MONO_ARCH_USE_SIGACTION
201 #define MONO_ARCH_NEED_DIV_CHECK 1
203 #define MONO_ARCH_HAVE_CREATE_DELEGATE_TRAMPOLINE
204 #define MONO_ARCH_HAVE_XP_UNWIND 1
205 #define MONO_ARCH_HAVE_GENERALIZED_IMT_THUNK 1
207 #define ARM_NUM_REG_ARGS (ARM_LAST_ARG_REG-ARM_FIRST_ARG_REG+1)
208 #define ARM_NUM_REG_FPARGS 0
210 #define MONO_ARCH_HAVE_FULL_AOT_TRAMPOLINES 1
211 #define MONO_ARCH_HAVE_IMT 1
212 #define MONO_ARCH_HAVE_DECOMPOSE_LONG_OPTS 1
214 #define MONO_ARCH_AOT_SUPPORTED 1
215 #define MONO_ARCH_LLVM_SUPPORTED 1
216 #define MONO_ARCH_THIS_AS_FIRST_ARG 1
218 #define MONO_ARCH_GSHARED_SUPPORTED 1
219 #define MONO_ARCH_DYN_CALL_SUPPORTED 1
220 #define MONO_ARCH_DYN_CALL_PARAM_AREA 24
222 #define MONO_ARCH_SOFT_DEBUG_SUPPORTED 1
223 #define MONO_ARCH_HAVE_EXCEPTIONS_INIT 1
224 #define MONO_ARCH_HAVE_GET_TRAMPOLINES 1
225 #define MONO_ARCH_HAVE_CONTEXT_SET_INT_REG 1
226 #define MONO_ARCH_HAVE_SIGCTX_TO_MONOCTX 1
227 #define MONO_ARCH_GC_MAPS_SUPPORTED 1
228 #define MONO_ARCH_HAVE_SETUP_ASYNC_CALLBACK 1
229 #define MONO_ARCH_HAVE_CONTEXT_SET_INT_REG 1
230 #define MONO_ARCH_HAVE_SETUP_RESUME_FROM_SIGNAL_HANDLER_CTX 1
231 #define MONO_ARCH_GSHAREDVT_SUPPORTED 1
232 #define MONO_ARCH_HAVE_GENERAL_RGCTX_LAZY_FETCH_TRAMPOLINE 1
233 #define MONO_ARCH_HAVE_OPCODE_NEEDS_EMULATION 1
235 #if defined(__native_client__)
236 #undef MONO_ARCH_SOFT_DEBUG_SUPPORTED
237 #undef MONO_ARCH_HAVE_SIGCTX_TO_MONOCTX
238 #undef MONO_ARCH_HAVE_CONTEXT_SET_INT_REG
241 /* Matches the HAVE_AEABI_READ_TP define in mini-arm.c */
242 #if defined(__ARM_EABI__) && defined(__linux__) && !defined(TARGET_ANDROID) && !defined(__native_client__)
243 #define MONO_ARCH_HAVE_TLS_GET 1
246 /* ARM doesn't have too many registers, so we have to use a callee saved one */
247 #define MONO_ARCH_RGCTX_REG ARMREG_V5
248 /* First argument reg */
249 #define MONO_ARCH_VTABLE_REG ARMREG_R0
251 #define MONO_CONTEXT_SET_LLVM_EXC_REG(ctx, exc) do { (ctx)->regs [0] = (gsize)exc; } while (0)
253 #define MONO_INIT_CONTEXT_FROM_FUNC(ctx,func) do { \
254 MONO_CONTEXT_SET_BP ((ctx), __builtin_frame_address (0)); \
255 MONO_CONTEXT_SET_SP ((ctx), __builtin_frame_address (0)); \
256 MONO_CONTEXT_SET_IP ((ctx), (func)); \
259 #define MONO_ARCH_INIT_TOP_LMF_ENTRY(lmf)
262 mono_arm_throw_exception (MonoObject *exc, mgreg_t pc, mgreg_t sp, mgreg_t *int_regs, gdouble *fp_regs);
265 mono_arm_throw_exception_by_token (guint32 type_token, mgreg_t pc, mgreg_t sp, mgreg_t *int_regs, gdouble *fp_regs);
268 mono_arm_resume_unwind (guint32 dummy1, mgreg_t pc, mgreg_t sp, mgreg_t *int_regs, gdouble *fp_regs);
271 mono_arm_thumb_supported (void);
274 mono_arm_get_exception_trampolines (gboolean aot) MONO_INTERNAL;
277 mono_arm_get_thumb_plt_entry (guint8 *code) MONO_INTERNAL;
280 mono_arm_patchable_b (guint8 *code, int cond);
283 mono_arm_patchable_bl (guint8 *code, int cond);
285 #ifdef USE_JUMP_TABLES
287 mono_arm_load_jumptable_entry_addr (guint8 *code, gpointer *jte, ARMReg reg) MONO_INTERNAL;
290 mono_arm_load_jumptable_entry (guint8 *code, gpointer *jte, ARMReg reg) MONO_INTERNAL;
293 #endif /* __MONO_MINI_ARM_H__ */