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comparison src/cpu/ppc/vm/assembler_ppc.hpp @ 17830:56e7f5560e60

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8036767: PPC64: Support for little endian execution model Reviewed-by: goetz, kvn, dholmes, simonis Contributed-by: asmundak@google.com
author kvn
date Wed, 02 Apr 2014 11:24:44 -0700
parents 31e80afe3fed
children b384ba33c9a0
comparison
equal deleted inserted replaced
17829:0118c8c7b80f 17830:56e7f5560e60
1023 assert_unsigned_const(x, nbits); 1023 assert_unsigned_const(x, nbits);
1024 return x & ((1 << nbits) - 1); 1024 return x & ((1 << nbits) - 1);
1025 } 1025 }
1026 1026
1027 static void set_imm(int* instr, short s) { 1027 static void set_imm(int* instr, short s) {
1028 short* p = ((short *)instr) + 1; 1028 // imm is always in the lower 16 bits of the instruction,
1029 *p = s; 1029 // so this is endian-neutral. Same for the get_imm below.
1030 uint32_t w = *(uint32_t *)instr;
1031 *instr = (int)((w & ~0x0000FFFF) | (s & 0x0000FFFF));
1030 } 1032 }
1031 1033
1032 static int get_imm(address a, int instruction_number) { 1034 static int get_imm(address a, int instruction_number) {
1033 short imm; 1035 return (short)((int *)a)[instruction_number];
1034 short *p =((short *)a)+2*instruction_number+1;
1035 imm = *p;
1036 return (int)imm;
1037 } 1036 }
1038 1037
1039 static inline int hi16_signed( int x) { return (int)(int16_t)(x >> 16); } 1038 static inline int hi16_signed( int x) { return (int)(int16_t)(x >> 16); }
1040 static inline int lo16_unsigned(int x) { return x & 0xffff; } 1039 static inline int lo16_unsigned(int x) { return x & 0xffff; }
1041 1040