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_FPU_VFP) || defined(__ARM_EABI__)
   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 and MonoContext  */
  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 #define MONO_ARCH_CALLEE_FREGS 0xf
  58 #define MONO_ARCH_CALLEE_SAVED_FREGS 0
  59
  60 #define MONO_ARCH_USE_FPSTACK FALSE
  61 #define MONO_ARCH_FPSTACK_SIZE 0
  62
  63 #define MONO_ARCH_INST_SREG2_MASK(ins) (0)
  64
  65 #ifdef MONO_ARCH_SOFT_FLOAT
  66 #define MONO_ARCH_INST_FIXED_REG(desc) (((desc) == 'l' || (desc == 'f') || (desc == 'g')) ? ARM_LSW_REG: (((desc) == 'a') ? ARMREG_R0 : -1))
  67 #define MONO_ARCH_INST_IS_REGPAIR(desc) ((desc) == 'l' || (desc) == 'L' || (desc) == 'f' || (desc) == 'g')
  68 #define MONO_ARCH_INST_IS_FLOAT(desc) (FALSE)
  69 #else
  70 #define MONO_ARCH_INST_FIXED_REG(desc) (((desc) == 'l')? ARM_LSW_REG: (((desc) == 'a') ? ARMREG_R0 : -1))
  71 #define MONO_ARCH_INST_IS_REGPAIR(desc) (desc == 'l' || desc == 'L')
  72 #define MONO_ARCH_INST_IS_FLOAT(desc) ((desc == 'f') || (desc == 'g'))
  73 #endif
  74 #define MONO_ARCH_INST_REGPAIR_REG2(desc,hreg1) (desc == 'l'  || (desc == 'f') || (desc == 'g')? ARM_MSW_REG : -1)
  75
  76 #define MONO_ARCH_FRAME_ALIGNMENT 8
  77
  78 /* fixme: align to 16byte instead of 32byte (we align to 32byte to get
  79  * reproduceable results for benchmarks */
  80 #define MONO_ARCH_CODE_ALIGNMENT 32
  81
  82 void arm_patch (guchar *code, const guchar *target);
  83 guint8* mono_arm_emit_load_imm (guint8 *code, int dreg, guint32 val);
  84 int mono_arm_is_rotated_imm8 (guint32 val, gint *rot_amount);
  85
  86 void
  87 mono_arm_throw_exception_by_token (guint32 type_token, unsigned long eip, unsigned long esp, gulong *int_regs, gdouble *fp_regs);
  88
  89 /* keep the size of the structure a multiple of 8 */
  90 struct MonoLMF {
  91         gpointer    previous_lmf;
  92         gpointer    lmf_addr;
  93         MonoMethod *method;
  94         gulong     esp;
  95         gulong     ebp;
  96         gulong     eip;
  97         gdouble    fregs [MONO_SAVED_FREGS]; /* 8..15 */
  98         /* all but sp and pc: matches the PUSH instruction layout in the trampolines
  99          * 0-4 should be considered undefined (execpt in the magic tramp)
 100          */
 101         gulong     iregs [14];
 102 };
 103
 104 /* we define our own structure and we'll copy the data
 105  * from sigcontext/ucontext/mach when we need it.
 106  * This also makes us save stack space and time when copying
 107  * We might also want to add an additional field to propagate
 108  * the original context from the signal handler.
 109  */
 110 typedef struct {
 111         gulong eip;          // pc
 112         gulong ebp;          // fp
 113         gulong esp;          // sp
 114         gulong regs [MONO_SAVED_GREGS];
 115         double fregs [MONO_SAVED_FREGS];
 116 } MonoContext;
 117
 118 typedef struct MonoCompileArch {
 119         int dummy;
 120 } MonoCompileArch;
 121
 122 #define MONO_ARCH_EMULATE_FCONV_TO_I8 1
 123 #define MONO_ARCH_EMULATE_LCONV_TO_R8 1
 124 #define MONO_ARCH_EMULATE_LCONV_TO_R4 1
 125 #define MONO_ARCH_EMULATE_LCONV_TO_R8_UN 1
 126 #define MONO_ARCH_EMULATE_FREM 1
 127 #define MONO_ARCH_EMULATE_DIV 1
 128 #define MONO_ARCH_EMULATE_CONV_R8_UN 1
 129 #define MONO_ARCH_EMULATE_MUL_OVF 1
 130 //#define MONO_ARCH_BIGMUL_INTRINS 1
 131
 132 #define ARM_FIRST_ARG_REG 0
 133 #define ARM_LAST_ARG_REG 3
 134
 135 #define MONO_ARCH_USE_SIGACTION 1
 136 #define MONO_ARCH_NEED_DIV_CHECK 1
 137
 138 #define MONO_ARCH_HAVE_THROW_CORLIB_EXCEPTION 1
 139 #define MONO_ARCH_HAVE_CREATE_TRAMPOLINE_FROM_TOKEN
 140 #define MONO_ARCH_HAVE_CREATE_DELEGATE_TRAMPOLINE
 141 #define MONO_ARCH_COMMON_VTABLE_TRAMPOLINE 1
 142 #define MONO_ARCH_HAVE_XP_UNWIND 1
 143
 144 #define ARM_NUM_REG_ARGS (ARM_LAST_ARG_REG-ARM_FIRST_ARG_REG+1)
 145 #define ARM_NUM_REG_FPARGS 0
 146
 147 #define MONO_ARCH_HAVE_FULL_AOT_TRAMPOLINES 1
 148 #define MONO_ARCH_HAVE_IMT 1
 149
 150 #define MONO_ARCH_AOT_SUPPORTED 1
 151
 152 /* ARM doesn't have too many registers, so we have to use a callee saved one */
 153 #define MONO_ARCH_RGCTX_REG ARMREG_V5
 154 /* First argument reg */
 155 #define MONO_ARCH_VTABLE_REG ARMREG_R0
 156
 157 /* we have the stack pointer, not the base pointer in sigcontext */
 158 #define MONO_CONTEXT_SET_IP(ctx,ip) do { (ctx)->eip = (int)ip; } while (0);
 159 #define MONO_CONTEXT_SET_BP(ctx,bp) do { (ctx)->ebp = (int)bp; } while (0);
 160 #define MONO_CONTEXT_SET_SP(ctx,bp) do { (ctx)->esp = (int)bp; } while (0);
 161
 162 #define MONO_CONTEXT_GET_IP(ctx) ((gpointer)((ctx)->eip))
 163 #define MONO_CONTEXT_GET_BP(ctx) ((gpointer)((ctx)->ebp))
 164 #define MONO_CONTEXT_GET_SP(ctx) ((gpointer)((ctx)->esp))
 165
 166 #define MONO_INIT_CONTEXT_FROM_FUNC(ctx,func) do {      \
 167                 MONO_CONTEXT_SET_BP ((ctx), __builtin_frame_address (0));       \
 168                 MONO_CONTEXT_SET_SP ((ctx), __builtin_frame_address (0));       \
 169                 MONO_CONTEXT_SET_IP ((ctx), (func));    \
 170         } while (0)
 171
 172 #if __APPLE__
 173         #define UCONTEXT_REG_PC(ctx) ((ctx)->uc_mcontext->__ss.__pc)
 174         #define UCONTEXT_REG_SP(ctx) ((ctx)->uc_mcontext->__ss.__sp)
 175         #define UCONTEXT_REG_R4(ctx) ((ctx)->uc_mcontext->__ss.__r[4])
 176 #else
 177         #define UCONTEXT_REG_PC(ctx) ((ctx)->sig_ctx.arm_pc)
 178         #define UCONTEXT_REG_SP(ctx) ((ctx)->sig_ctx.arm_sp)
 179         #define UCONTEXT_REG_R4(ctx) ((ctx)->sig_ctx.arm_r4)
 180 #endif
 181
 182 void
 183 mono_arm_throw_exception (MonoObject *exc, unsigned long eip, unsigned long esp, gulong *int_regs, gdouble *fp_regs);
 184
 185 void
 186 mono_arm_throw_exception_by_token (guint32 type_token, unsigned long eip, unsigned long esp, gulong *int_regs, gdouble *fp_regs);
 187
 188 #endif /* __MONO_MINI_ARM_H__ */
 189