pike.git/ src/ code/ amd64.c

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2011-05-20

2011-05-20 13:32:46 by Henrik Grubbström (Grubba) <grubba@grubba.org>

Compiler (amd64): Some fixes and potential support for MacOS X.

21:    REG_R12 = 12, REG_R13 = 13, REG_R14 = 14, REG_R15 = 15,    REG_NONE = 4};    - /* We reserve register r13 and above (as well as RSP and RBP). */ + /* We reserve register r12 and above (as well as RSP, RBP and RBX). */   #define REG_BITMASK ((1 << REG_MAX) - 1) - #define REG_RESERVED (REG_RSP|REG_RBP) + #define REG_RESERVED (REG_RSP|REG_RBP|REG_RBX)   #define REG_MAX REG_R12   #define PIKE_MARK_SP_REG REG_R12   #define PIKE_SP_REG REG_R13
282:      /* CALL *addr */   #define CALL_ABSOLUTE(X) do { \ -  void *addr__ = (X); \ -  AMD64_LOAD_IMM32(REG_RAX, addr__); \ +  size_t addr__ = (size_t)(void *)(X); \ +  if (addr__ & ~0x7fffffffLL) { \ +  /* Apple in their wisdom has the text \ +  * segment in the second 4GB block... \ +  * \ +  * Fortunately function entry points \ +  * are at least 32-bit aligned. \ +  */ \ +  if (!(addr__ & ~0x3fffffff8LL)) { \ +  AMD64_LOAD_IMM32(REG_RAX, addr__>>3); \ +  AMD64_SHL_IMM8(REG_RAX, 3); \ +  } else { \ +  /* Catch all. */ \ +  AMD64_LOAD_IMM(REG_RAX, addr__); \ +  } \ +  } else { \ +  /* Low 31-bit block. \ +  * Linux, Solaris, etc... */ \ +  AMD64_LOAD_IMM32(REG_RAX, addr__); \ +  } \    add_to_program(0xff); \    add_to_program(0xd0); \    } while(0)
774:    addr=instrs[b].address;    switch(b + F_OFFSET) {    case F_CATCH: -  /* Special arguments for the F_CATCH instruction. */ -  AMD64_LOAD_RIP32(0x20, ARG1_REG); /* Address for the POINTER.. */ +  /* Special argument for the F_CATCH instruction. */ +  AMD64_LOAD_RIP32(0x20 - 0x03, ARG1_REG); /* Address for the POINTER. */    addr = inter_return_opcode_F_CATCH;    break;    case F_UNDEFINED:
836:    AMD64_LOAD_RIP32(JUMP_EPILOGUE_SIZE - 7, REG_RCX);    }    AMD64_CMP_REG_IMM32(REG_RAX, -1); -  AMD64_JNE(0x0f); -  AMD64_ADD_REG_IMM32(REG_RBP, -0x28, REG_RSP); +  AMD64_JNE(0x0f - 0x03); +  AMD64_POP(REG_RBX); // Stack padding.    AMD64_POP(REG_RBX);    AMD64_POP(REG_R12);    AMD64_POP(REG_R13);