mono/mini/mini-arm.h

   1 #ifndef __MONO_MINI_ARM_H__
   2 #define __MONO_MINI_ARM_H__
   3
   4 #include <mono/arch/arm/arm-codegen.h>
   5 #include <glib.h>
   6
   7 #if defined(ARM_FPU_NONE) || (defined(__ARM_EABI__) && !defined(ARM_FPU_VFP))
   8 #define MONO_ARCH_SOFT_FLOAT 1
   9 #endif
  10
  11 #if defined(__ARM_EABI__)
  12 #if G_BYTE_ORDER == G_LITTLE_ENDIAN
  13 #define ARM_ARCHITECTURE "armel"
  14 #else
  15 #define ARM_ARCHITECTURE "armeb"
  16 #endif
  17 #else
  18 #define ARM_ARCHITECTURE "arm"
  19 #endif
  20
  21 #if defined(ARM_FPU_FPA)
  22 #define ARM_FP_MODEL "fpa"
  23 #elif defined(ARM_FPU_VFP)
  24 #define ARM_FP_MODEL "vfp"
  25 #elif defined(ARM_FPU_NONE)
  26 #define ARM_FP_MODEL "soft-float"
  27 #else
  28 #error "At least one of ARM_FPU_NONE or ARM_FPU_FPA or ARM_FPU_VFP must be defined."
  29 #endif
  30
  31 #define MONO_ARCH_ARCHITECTURE ARM_ARCHITECTURE "," ARM_FP_MODEL
  32
  33 #define MONO_ARCH_CPU_SPEC arm_cpu_desc
  34
  35 #if G_BYTE_ORDER == G_LITTLE_ENDIAN
  36 #define ARM_LSW_REG ARMREG_R0
  37 #define ARM_MSW_REG ARMREG_R1
  38 #else
  39 #define ARM_LSW_REG ARMREG_R1
  40 #define ARM_MSW_REG ARMREG_R0
  41 #endif
  42
  43 #define MONO_MAX_IREGS 16
  44 #define MONO_MAX_FREGS 16
  45
  46 #define MONO_SAVED_GREGS 10 /* r4-411, ip, lr */
  47 #define MONO_SAVED_FREGS 8
  48
  49 /* r4-r11, ip, lr: registers saved in the LMF  */
  50 #define MONO_ARM_REGSAVE_MASK 0x5ff0
  51
  52 /* Parameters used by the register allocator */
  53
  54 #define MONO_ARCH_CALLEE_REGS ((1<<ARMREG_R0) | (1<<ARMREG_R1) | (1<<ARMREG_R2) | (1<<ARMREG_R3) | (1<<ARMREG_IP))
  55 #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))
  56
  57 #ifdef ARM_FPU_VFP
  58 /* Every double precision vfp register, d0/d1 is reserved for a scratch reg */
  59 #define MONO_ARCH_CALLEE_FREGS 0x55555550
  60 #else
  61 #define MONO_ARCH_CALLEE_FREGS 0xf
  62 #endif
  63 #define MONO_ARCH_CALLEE_SAVED_FREGS 0
  64
  65 #define MONO_ARCH_USE_FPSTACK FALSE
  66 #define MONO_ARCH_FPSTACK_SIZE 0
  67
  68 #define MONO_ARCH_INST_SREG2_MASK(ins) (0)
  69
  70 #ifdef MONO_ARCH_SOFT_FLOAT
  71 #define MONO_ARCH_INST_FIXED_REG(desc) (((desc) == 'l' || (desc == 'f') || (desc == 'g')) ? ARM_LSW_REG: (((desc) == 'a') ? ARMREG_R0 : -1))
  72 #define MONO_ARCH_INST_IS_REGPAIR(desc) ((desc) == 'l' || (desc) == 'L' || (desc) == 'f' || (desc) == 'g')
  73 #define MONO_ARCH_INST_IS_FLOAT(desc) (FALSE)
  74 #else
  75 #define MONO_ARCH_INST_FIXED_REG(desc) (((desc) == 'l')? ARM_LSW_REG: (((desc) == 'a') ? ARMREG_R0 : -1))
  76 #define MONO_ARCH_INST_IS_REGPAIR(desc) (desc == 'l' || desc == 'L')
  77 #define MONO_ARCH_INST_IS_FLOAT(desc) ((desc == 'f') || (desc == 'g'))
  78 #endif
  79 #define MONO_ARCH_INST_REGPAIR_REG2(desc,hreg1) (desc == 'l'  || (desc == 'f') || (desc == 'g')? ARM_MSW_REG : -1)
  80
  81 #define MONO_ARCH_FRAME_ALIGNMENT 8
  82
  83 /* fixme: align to 16byte instead of 32byte (we align to 32byte to get
  84  * reproduceable results for benchmarks */
  85 #define MONO_ARCH_CODE_ALIGNMENT 32
  86
  87 void arm_patch (guchar *code, const guchar *target);
  88 guint8* mono_arm_emit_load_imm (guint8 *code, int dreg, guint32 val);
  89 int mono_arm_is_rotated_imm8 (guint32 val, gint *rot_amount);
  90
  91 void
  92 mono_arm_throw_exception_by_token (guint32 type_token, unsigned long eip, unsigned long esp, gulong *int_regs, gdouble *fp_regs);
  93
  94 /* keep the size of the structure a multiple of 8 */
  95 struct MonoLMF {
  96         /*
  97          * If the second lowest bit is set to 1, then this is a MonoLMFExt structure, and
  98          * the other fields are not valid.
  99          */
 100         gpointer    previous_lmf;
 101         gpointer    lmf_addr;
 102         MonoMethod *method;
 103         gulong     esp;
 104         gulong     ebp;
 105         gulong     eip;
 106         gdouble    fregs [MONO_SAVED_FREGS]; /* 8..15 */
 107         /* all but sp and pc: matches the PUSH instruction layout in the trampolines
 108          * 0-4 should be considered undefined (execpt in the magic tramp)
 109          */
 110         gulong     iregs [14];
 111 };
 112
 113 /* we define our own structure and we'll copy the data
 114  * from sigcontext/ucontext/mach when we need it.
 115  * This also makes us save stack space and time when copying
 116  * We might also want to add an additional field to propagate
 117  * the original context from the signal handler.
 118  */
 119 typedef struct {
 120         gulong eip;          // pc
 121         gulong ebp;          // fp
 122         gulong esp;          // sp
 123         gulong regs [16];
 124         double fregs [MONO_SAVED_FREGS];
 125 } MonoContext;
 126
 127 typedef struct MonoCompileArch {
 128         gpointer seq_point_info_var, ss_trigger_page_var;
 129         gpointer cinfo;
 130 } MonoCompileArch;
 131
 132 #define MONO_ARCH_EMULATE_FCONV_TO_I8 1
 133 #define MONO_ARCH_EMULATE_LCONV_TO_R8 1
 134 #define MONO_ARCH_EMULATE_LCONV_TO_R4 1
 135 #define MONO_ARCH_EMULATE_LCONV_TO_R8_UN 1
 136 #define MONO_ARCH_EMULATE_FREM 1
 137 #define MONO_ARCH_EMULATE_DIV 1
 138 #define MONO_ARCH_EMULATE_CONV_R8_UN 1
 139 #define MONO_ARCH_EMULATE_MUL_OVF 1
 140 //#define MONO_ARCH_BIGMUL_INTRINS 1
 141
 142 #define ARM_FIRST_ARG_REG 0
 143 #define ARM_LAST_ARG_REG 3
 144
 145 #define MONO_ARCH_USE_SIGACTION 1
 146 #define MONO_ARCH_NEED_DIV_CHECK 1
 147
 148 #define MONO_ARCH_HAVE_THROW_CORLIB_EXCEPTION 1
 149 #define MONO_ARCH_HAVE_CREATE_DELEGATE_TRAMPOLINE
 150 #define MONO_ARCH_HAVE_XP_UNWIND 1
 151
 152 #define ARM_NUM_REG_ARGS (ARM_LAST_ARG_REG-ARM_FIRST_ARG_REG+1)
 153 #define ARM_NUM_REG_FPARGS 0
 154
 155 #define MONO_ARCH_HAVE_FULL_AOT_TRAMPOLINES 1
 156 #define MONO_ARCH_HAVE_IMT 1
 157 #define MONO_ARCH_HAVE_STATIC_RGCTX_TRAMPOLINE 1
 158 #define MONO_ARCH_HAVE_DECOMPOSE_LONG_OPTS 1
 159
 160 #define MONO_ARCH_AOT_SUPPORTED 1
 161 #define MONO_ARCH_LLVM_SUPPORTED 1
 162
 163 #define MONO_ARCH_GSHARED_SUPPORTED 1
 164 #define MONO_ARCH_DYN_CALL_SUPPORTED 1
 165 #define MONO_ARCH_DYN_CALL_PARAM_AREA 24
 166
 167 #define MONO_ARCH_SOFT_DEBUG_SUPPORTED 1
 168 #define MONO_ARCH_HAVE_FIND_JIT_INFO_EXT 1
 169
 170 /* ARM doesn't have too many registers, so we have to use a callee saved one */
 171 #define MONO_ARCH_RGCTX_REG ARMREG_V5
 172 /* First argument reg */
 173 #define MONO_ARCH_VTABLE_REG ARMREG_R0
 174
 175 /* we have the stack pointer, not the base pointer in sigcontext */
 176 #define MONO_CONTEXT_SET_IP(ctx,ip) do { (ctx)->eip = (int)ip; } while (0);
 177 #define MONO_CONTEXT_SET_BP(ctx,bp) do { (ctx)->ebp = (int)bp; } while (0);
 178 #define MONO_CONTEXT_SET_SP(ctx,bp) do { (ctx)->esp = (int)bp; } while (0);
 179
 180 #define MONO_CONTEXT_GET_IP(ctx) ((gpointer)((ctx)->eip))
 181 #define MONO_CONTEXT_GET_BP(ctx) ((gpointer)((ctx)->ebp))
 182 #define MONO_CONTEXT_GET_SP(ctx) ((gpointer)((ctx)->esp))
 183
 184 #define MONO_INIT_CONTEXT_FROM_FUNC(ctx,func) do {      \
 185                 MONO_CONTEXT_SET_BP ((ctx), __builtin_frame_address (0));       \
 186                 MONO_CONTEXT_SET_SP ((ctx), __builtin_frame_address (0));       \
 187                 MONO_CONTEXT_SET_IP ((ctx), (func));    \
 188         } while (0)
 189
 190 #if __APPLE__
 191         #define UCONTEXT_REG_PC(ctx) ((ctx)->uc_mcontext->__ss.__pc)
 192         #define UCONTEXT_REG_SP(ctx) ((ctx)->uc_mcontext->__ss.__sp)
 193         #define UCONTEXT_REG_R0(ctx) ((ctx)->uc_mcontext->__ss.__r[0])
 194 #else
 195         #define UCONTEXT_REG_PC(ctx) ((ctx)->sig_ctx.arm_pc)
 196         #define UCONTEXT_REG_SP(ctx) ((ctx)->sig_ctx.arm_sp)
 197         #define UCONTEXT_REG_R0(ctx) ((ctx)->sig_ctx.arm_r0)
 198 #endif
 199
 200 /*
 201  * This structure is an extension of MonoLMF and contains extra information.
 202  */
 203 typedef struct {
 204         struct MonoLMF lmf;
 205         gboolean debugger_invoke;
 206         MonoContext ctx; /* if debugger_invoke is TRUE */
 207 } MonoLMFExt;
 208
 209 void
 210 mono_arm_throw_exception (MonoObject *exc, unsigned long eip, unsigned long esp, gulong *int_regs, gdouble *fp_regs);
 211
 212 void
 213 mono_arm_throw_exception_by_token (guint32 type_token, unsigned long eip, unsigned long esp, gulong *int_regs, gdouble *fp_regs);
 214
 215 gboolean
 216 mono_arm_thumb_supported (void);
 217
 218 #endif /* __MONO_MINI_ARM_H__ */
 219