commit fb798c50b2c896195fb94af229dfbcc52babdfea Author: Andreas Krebbel Date: Fri Jul 5 09:45:44 2013 +0000 2013-07-05 Andreas Krebbel opcodes/ * s390-opc.c (J12_12, J24_24): New macros. (INSTR_MII_UPI): Rename to INSTR_MII_UPP. (MASK_MII_UPI): Rename to MASK_MII_UPP. * s390-opc.txt: Rename MII_UPI to MII_UPP for bprp instruction. include/elf/ * s390.h: Add new relocs R_390_PC12DBL, R_390_PLT12DBL, R_390_PC24DBL, and R_390_PLT24DBL. gas/testsuite/ * gas/s390/zarch-zEC12.s: Change bprp second operand and add variants requiring relocations. * gas/s390/zarch-zEC12.d: Likewise. gas/ * config/tc-s390.c (md_gather_operands, md_apply_fix): Support new relocs. bfd/ * elf32-s390.c: Add new relocation definitions R_390_PC12DBL, R_390_PLT12DBL, R_390_PC24DBL, and R_390_PLT24DBL. (elf_s390_reloc_type_lookup, elf_s390_check_relocs) (elf_s390_gc_sweep_hook, elf_s390_relocate_section): Support new relocations. * elf64-s390.c: See elf32-s390.c * bfd-in2.h: Add new relocs to enum bfd_reloc_code_real. * libbfd.h: Add new reloc strings. ### a/bfd/ChangeLog ### b/bfd/ChangeLog ## -1,3 +1,14 @@ +2013-07-05 Andreas Krebbel + + * elf32-s390.c: Add new relocation definitions R_390_PC12DBL, + R_390_PLT12DBL, R_390_PC24DBL, and R_390_PLT24DBL. + (elf_s390_reloc_type_lookup, elf_s390_check_relocs) + (elf_s390_gc_sweep_hook, elf_s390_relocate_section): Support new + relocations. + * elf64-s390.c: See elf32-s390.c + * bfd-in2.h: Add new relocs to enum bfd_reloc_code_real. + * libbfd.h: Add new reloc strings. + 2013-07-03 Marcus Shawcroft * elfnn-aarch64.c (elfNN_aarch64_final_link_relocate): Reorder case --- a/bfd/bfd-in2.h +++ b/bfd/bfd-in2.h @@ -4332,12 +4332,24 @@ in .byte hlo8(symbol) */ /* 16 bit GOT offset. */ BFD_RELOC_390_GOT16, +/* PC relative 12 bit shifted by 1. */ + BFD_RELOC_390_PC12DBL, + +/* 12 bit PC rel. PLT shifted by 1. */ + BFD_RELOC_390_PLT12DBL, + /* PC relative 16 bit shifted by 1. */ BFD_RELOC_390_PC16DBL, /* 16 bit PC rel. PLT shifted by 1. */ BFD_RELOC_390_PLT16DBL, +/* PC relative 24 bit shifted by 1. */ + BFD_RELOC_390_PC24DBL, + +/* 24 bit PC rel. PLT shifted by 1. */ + BFD_RELOC_390_PLT24DBL, + /* PC relative 32 bit shifted by 1. */ BFD_RELOC_390_PC32DBL, --- a/bfd/elf32-s390.c +++ b/bfd/elf32-s390.c @@ -40,7 +40,7 @@ static reloc_howto_type elf_howto_table[] = { HOWTO (R_390_NONE, /* type */ 0, /* rightshift */ - 0, /* size (0 = byte, 1 = short, 2 = long) */ + 0, /* size (0 = byte, 1 = 2 byte, 2 = 4 byte) */ 0, /* bitsize */ FALSE, /* pc_relative */ 0, /* bitpos */ @@ -161,6 +161,14 @@ static reloc_howto_type elf_howto_table[] = s390_elf_ldisp_reloc, "R_390_TLS_GOTIE20", FALSE, 0,0x0fffff00, FALSE), HOWTO(R_390_IRELATIVE, 0, 2, 32, TRUE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_IRELATIVE", FALSE, 0, 0xffffffff, FALSE), + HOWTO(R_390_PC12DBL, 1, 1, 12, TRUE, 0, complain_overflow_bitfield, + bfd_elf_generic_reloc, "R_390_PC12DBL", FALSE, 0,0x00000fff, TRUE), + HOWTO(R_390_PLT12DBL, 1, 1, 12, TRUE, 0, complain_overflow_bitfield, + bfd_elf_generic_reloc, "R_390_PLT12DBL", FALSE, 0,0x00000fff, TRUE), + HOWTO(R_390_PC24DBL, 1, 2, 24, TRUE, 0, complain_overflow_bitfield, + bfd_elf_generic_reloc, "R_390_PC24DBL", FALSE, 0,0x00ffffff, TRUE), + HOWTO(R_390_PLT24DBL, 1, 2, 24, TRUE, 0, complain_overflow_bitfield, + bfd_elf_generic_reloc, "R_390_PLT24DBL", FALSE, 0,0x00ffffff, TRUE), }; /* GNU extension to record C++ vtable hierarchy. */ @@ -211,10 +219,18 @@ elf_s390_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, return &elf_howto_table[(int) R_390_GOT16]; case BFD_RELOC_16_PCREL: return &elf_howto_table[(int) R_390_PC16]; + case BFD_RELOC_390_PC12DBL: + return &elf_howto_table[(int) R_390_PC12DBL]; + case BFD_RELOC_390_PLT12DBL: + return &elf_howto_table[(int) R_390_PLT12DBL]; case BFD_RELOC_390_PC16DBL: return &elf_howto_table[(int) R_390_PC16DBL]; case BFD_RELOC_390_PLT16DBL: return &elf_howto_table[(int) R_390_PLT16DBL]; + case BFD_RELOC_390_PC24DBL: + return &elf_howto_table[(int) R_390_PC24DBL]; + case BFD_RELOC_390_PLT24DBL: + return &elf_howto_table[(int) R_390_PLT24DBL]; case BFD_RELOC_390_PC32DBL: return &elf_howto_table[(int) R_390_PC32DBL]; case BFD_RELOC_390_PLT32DBL: @@ -1107,7 +1123,9 @@ elf_s390_check_relocs (bfd *abfd, are done. */ break; + case R_390_PLT12DBL: case R_390_PLT16DBL: + case R_390_PLT24DBL: case R_390_PLT32DBL: case R_390_PLT32: case R_390_PLTOFF16: @@ -1242,7 +1260,9 @@ elf_s390_check_relocs (bfd *abfd, case R_390_16: case R_390_32: case R_390_PC16: + case R_390_PC12DBL: case R_390_PC16DBL: + case R_390_PC24DBL: case R_390_PC32DBL: case R_390_PC32: if (h != NULL) @@ -1287,7 +1307,9 @@ elf_s390_check_relocs (bfd *abfd, if ((info->shared && (sec->flags & SEC_ALLOC) != 0 && ((ELF32_R_TYPE (rel->r_info) != R_390_PC16 + && ELF32_R_TYPE (rel->r_info) != R_390_PC12DBL && ELF32_R_TYPE (rel->r_info) != R_390_PC16DBL + && ELF32_R_TYPE (rel->r_info) != R_390_PC24DBL && ELF32_R_TYPE (rel->r_info) != R_390_PC32DBL && ELF32_R_TYPE (rel->r_info) != R_390_PC32) || (h != NULL @@ -1364,7 +1386,9 @@ elf_s390_check_relocs (bfd *abfd, p->count += 1; if (ELF32_R_TYPE (rel->r_info) == R_390_PC16 + || ELF32_R_TYPE (rel->r_info) == R_390_PC12DBL || ELF32_R_TYPE (rel->r_info) == R_390_PC16DBL + || ELF32_R_TYPE (rel->r_info) == R_390_PC24DBL || ELF32_R_TYPE (rel->r_info) == R_390_PC32DBL || ELF32_R_TYPE (rel->r_info) == R_390_PC32) p->pc_count += 1; @@ -1531,14 +1555,18 @@ elf_s390_gc_sweep_hook (bfd *abfd, case R_390_20: case R_390_32: case R_390_PC16: + case R_390_PC12DBL: case R_390_PC16DBL: + case R_390_PC24DBL: case R_390_PC32DBL: case R_390_PC32: if (info->shared) break; /* Fall through. */ + case R_390_PLT12DBL: case R_390_PLT16DBL: + case R_390_PLT24DBL: case R_390_PLT32DBL: case R_390_PLT32: case R_390_PLTOFF16: @@ -2588,7 +2616,9 @@ elf_s390_relocate_section (bfd *output_bfd, unresolved_reloc = FALSE; break; + case R_390_PLT12DBL: case R_390_PLT16DBL: + case R_390_PLT24DBL: case R_390_PLT32DBL: case R_390_PLT32: /* Relocation is to the entry for this symbol in the @@ -2651,7 +2681,9 @@ elf_s390_relocate_section (bfd *output_bfd, case R_390_16: case R_390_32: case R_390_PC16: + case R_390_PC12DBL: case R_390_PC16DBL: + case R_390_PC24DBL: case R_390_PC32DBL: case R_390_PC32: if (h != NULL @@ -2723,7 +2755,9 @@ elf_s390_relocate_section (bfd *output_bfd, || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT || h->root.type != bfd_link_hash_undefweak) && ((r_type != R_390_PC16 + && r_type != R_390_PC12DBL && r_type != R_390_PC16DBL + && r_type != R_390_PC24DBL && r_type != R_390_PC32DBL && r_type != R_390_PC32) || !SYMBOL_CALLS_LOCAL (info, h))) @@ -2764,7 +2798,9 @@ elf_s390_relocate_section (bfd *output_bfd, else if (h != NULL && h->dynindx != -1 && (r_type == R_390_PC16 + || r_type == R_390_PC12DBL || r_type == R_390_PC16DBL + || r_type == R_390_PC24DBL || r_type == R_390_PC32DBL || r_type == R_390_PC32 || !info->shared @@ -3242,6 +3278,13 @@ elf_s390_relocate_section (bfd *output_bfd, do_relocation: + /* When applying a 24 bit reloc we need to start one byte + earlier. Otherwise the 32 bit get/put bfd operations might + access a byte after the actual section. */ + if (r_type == R_390_PC24DBL + || r_type == R_390_PLT24DBL) + rel->r_offset--; + if (r_type == R_390_20 || r_type == R_390_GOT20 || r_type == R_390_GOTPLT20 --- a/bfd/elf64-s390.c +++ b/bfd/elf64-s390.c @@ -43,7 +43,7 @@ static reloc_howto_type elf_howto_table[] = { HOWTO (R_390_NONE, /* type */ 0, /* rightshift */ - 0, /* size (0 = byte, 1 = short, 2 = long) */ + 0, /* size (0 = byte, 1 = 2 byte, 2 = 4 byte) */ 0, /* bitsize */ FALSE, /* pc_relative */ 0, /* bitpos */ @@ -171,7 +171,14 @@ static reloc_howto_type elf_howto_table[] = s390_elf_ldisp_reloc, "R_390_TLS_GOTIE20", FALSE, 0,0x0fffff00, FALSE), HOWTO(R_390_IRELATIVE, 0, 4, 64, FALSE, 0, complain_overflow_bitfield, bfd_elf_generic_reloc, "R_390_IRELATIVE", FALSE, 0, MINUS_ONE, FALSE), - + HOWTO(R_390_PC12DBL, 1, 1, 12, TRUE, 0, complain_overflow_bitfield, + bfd_elf_generic_reloc, "R_390_PC12DBL", FALSE, 0,0x00000fff, TRUE), + HOWTO(R_390_PLT12DBL, 1, 1, 12, TRUE, 0, complain_overflow_bitfield, + bfd_elf_generic_reloc, "R_390_PLT12DBL", FALSE, 0,0x00000fff, TRUE), + HOWTO(R_390_PC24DBL, 1, 2, 24, TRUE, 0, complain_overflow_bitfield, + bfd_elf_generic_reloc, "R_390_PC24DBL", FALSE, 0,0x00ffffff, TRUE), + HOWTO(R_390_PLT24DBL, 1, 2, 24, TRUE, 0, complain_overflow_bitfield, + bfd_elf_generic_reloc, "R_390_PLT24DBL", FALSE, 0,0x00ffffff, TRUE), }; /* GNU extension to record C++ vtable hierarchy. */ @@ -222,10 +229,18 @@ elf_s390_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, return &elf_howto_table[(int) R_390_GOT16]; case BFD_RELOC_16_PCREL: return &elf_howto_table[(int) R_390_PC16]; + case BFD_RELOC_390_PC12DBL: + return &elf_howto_table[(int) R_390_PC12DBL]; + case BFD_RELOC_390_PLT12DBL: + return &elf_howto_table[(int) R_390_PLT12DBL]; case BFD_RELOC_390_PC16DBL: return &elf_howto_table[(int) R_390_PC16DBL]; case BFD_RELOC_390_PLT16DBL: return &elf_howto_table[(int) R_390_PLT16DBL]; + case BFD_RELOC_390_PC24DBL: + return &elf_howto_table[(int) R_390_PC24DBL]; + case BFD_RELOC_390_PLT24DBL: + return &elf_howto_table[(int) R_390_PLT24DBL]; case BFD_RELOC_390_PC32DBL: return &elf_howto_table[(int) R_390_PC32DBL]; case BFD_RELOC_390_PLT32DBL: @@ -1037,7 +1052,9 @@ elf_s390_check_relocs (bfd *abfd, are done. */ break; + case R_390_PLT12DBL: case R_390_PLT16DBL: + case R_390_PLT24DBL: case R_390_PLT32: case R_390_PLT32DBL: case R_390_PLT64: @@ -1176,8 +1193,10 @@ elf_s390_check_relocs (bfd *abfd, case R_390_16: case R_390_32: case R_390_64: + case R_390_PC12DBL: case R_390_PC16: case R_390_PC16DBL: + case R_390_PC24DBL: case R_390_PC32: case R_390_PC32DBL: case R_390_PC64: @@ -1223,7 +1242,9 @@ elf_s390_check_relocs (bfd *abfd, if ((info->shared && (sec->flags & SEC_ALLOC) != 0 && ((ELF64_R_TYPE (rel->r_info) != R_390_PC16 + && ELF64_R_TYPE (rel->r_info) != R_390_PC12DBL && ELF64_R_TYPE (rel->r_info) != R_390_PC16DBL + && ELF64_R_TYPE (rel->r_info) != R_390_PC24DBL && ELF64_R_TYPE (rel->r_info) != R_390_PC32 && ELF64_R_TYPE (rel->r_info) != R_390_PC32DBL && ELF64_R_TYPE (rel->r_info) != R_390_PC64) @@ -1300,6 +1321,8 @@ elf_s390_check_relocs (bfd *abfd, p->count += 1; if (ELF64_R_TYPE (rel->r_info) == R_390_PC16 + || ELF64_R_TYPE (rel->r_info) == R_390_PC12DBL + || ELF64_R_TYPE (rel->r_info) == R_390_PC16DBL || ELF64_R_TYPE (rel->r_info) == R_390_PC16DBL || ELF64_R_TYPE (rel->r_info) == R_390_PC32 || ELF64_R_TYPE (rel->r_info) == R_390_PC32DBL @@ -1471,7 +1494,9 @@ elf_s390_gc_sweep_hook (bfd *abfd, case R_390_32: case R_390_64: case R_390_PC16: + case R_390_PC12DBL: case R_390_PC16DBL: + case R_390_PC24DBL: case R_390_PC32: case R_390_PC32DBL: case R_390_PC64: @@ -1479,7 +1504,9 @@ elf_s390_gc_sweep_hook (bfd *abfd, break; /* Fall through */ + case R_390_PLT12DBL: case R_390_PLT16DBL: + case R_390_PLT24DBL: case R_390_PLT32: case R_390_PLT32DBL: case R_390_PLT64: @@ -2550,7 +2577,9 @@ elf_s390_relocate_section (bfd *output_bfd, unresolved_reloc = FALSE; break; + case R_390_PLT12DBL: case R_390_PLT16DBL: + case R_390_PLT24DBL: case R_390_PLT32: case R_390_PLT32DBL: case R_390_PLT64: @@ -2615,7 +2644,9 @@ elf_s390_relocate_section (bfd *output_bfd, case R_390_32: case R_390_64: case R_390_PC16: + case R_390_PC12DBL: case R_390_PC16DBL: + case R_390_PC24DBL: case R_390_PC32: case R_390_PC32DBL: case R_390_PC64: @@ -2689,7 +2720,9 @@ elf_s390_relocate_section (bfd *output_bfd, || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT || h->root.type != bfd_link_hash_undefweak) && ((r_type != R_390_PC16 + && r_type != R_390_PC12DBL && r_type != R_390_PC16DBL + && r_type != R_390_PC24DBL && r_type != R_390_PC32 && r_type != R_390_PC32DBL && r_type != R_390_PC64) @@ -2731,7 +2764,9 @@ elf_s390_relocate_section (bfd *output_bfd, else if (h != NULL && h->dynindx != -1 && (r_type == R_390_PC16 + || r_type == R_390_PC12DBL || r_type == R_390_PC16DBL + || r_type == R_390_PC24DBL || r_type == R_390_PC32 || r_type == R_390_PC32DBL || r_type == R_390_PC64 @@ -3168,6 +3203,13 @@ elf_s390_relocate_section (bfd *output_bfd, do_relocation: + /* When applying a 24 bit reloc we need to start one byte + earlier. Otherwise the 32 bit get/put bfd operations might + access a byte after the actual section. */ + if (r_type == R_390_PC24DBL + || r_type == R_390_PLT24DBL) + rel->r_offset--; + if (r_type == R_390_20 || r_type == R_390_GOT20 || r_type == R_390_GOTPLT20 --- a/bfd/libbfd.h +++ b/bfd/libbfd.h @@ -2008,8 +2008,12 @@ static const char *const bfd_reloc_code_real_names[] = { "@@uninitialized@@", "BFD_RELOC_390_RELATIVE", "BFD_RELOC_390_GOTPC", "BFD_RELOC_390_GOT16", + "BFD_RELOC_390_PC12DBL", + "BFD_RELOC_390_PLT12DBL", "BFD_RELOC_390_PC16DBL", "BFD_RELOC_390_PLT16DBL", + "BFD_RELOC_390_PC24DBL", + "BFD_RELOC_390_PLT24DBL", "BFD_RELOC_390_PC32DBL", "BFD_RELOC_390_PLT32DBL", "BFD_RELOC_390_GOTPCDBL", ### a/include/elf/ChangeLog ### b/include/elf/ChangeLog ## -1,3 +1,8 @@ +2013-07-05 Andreas Krebbel + + * s390.h: Add new relocs R_390_PC12DBL, R_390_PLT12DBL, + R_390_PC24DBL, and R_390_PLT24DBL. + 2013-06-26 Yufeng Zhang * aarch64.h: Add ELF32 reloc codes and remove fake ELF64 ones. --- a/include/elf/s390.h +++ b/include/elf/s390.h @@ -57,8 +57,12 @@ START_RELOC_NUMBERS (elf_s390_reloc_type) RELOC_NUMBER (R_390_GOTPC, 14) /* 32 bit PC relative offset to GOT. */ RELOC_NUMBER (R_390_GOT16, 15) /* 16 bit GOT offset. */ RELOC_NUMBER (R_390_PC16, 16) /* PC relative 16 bit. */ + RELOC_NUMBER (R_390_PC12DBL, 62) /* PC relative 12 bit shifted by 1. */ + RELOC_NUMBER (R_390_PLT12DBL, 63) /* 12 bit PC rel. PLT shifted by 1. */ RELOC_NUMBER (R_390_PC16DBL, 17) /* PC relative 16 bit shifted by 1. */ RELOC_NUMBER (R_390_PLT16DBL, 18) /* 16 bit PC rel. PLT shifted by 1. */ + RELOC_NUMBER (R_390_PC24DBL, 64) /* PC relative 24 bit shifted by 1. */ + RELOC_NUMBER (R_390_PLT24DBL, 65) /* 24 bit PC rel. PLT shifted by 1. */ RELOC_NUMBER (R_390_PC32DBL, 19) /* PC relative 32 bit shifted by 1. */ RELOC_NUMBER (R_390_PLT32DBL, 20) /* 32 bit PC rel. PLT shifted by 1. */ RELOC_NUMBER (R_390_GOTPCDBL, 21) /* 32 bit PC rel. GOT shifted by 1. */ ### a/opcodes/ChangeLog ### b/opcodes/ChangeLog ## -1,3 +1,10 @@ +2013-07-05 Andreas Krebbel + + * s390-opc.c (J12_12, J24_24): New macros. + (INSTR_MII_UPI): Rename to INSTR_MII_UPP. + (MASK_MII_UPI): Rename to MASK_MII_UPP. + * s390-opc.txt: Rename MII_UPI to MII_UPP for bprp instruction. + 2013-07-04 Alan Modra * ppc-opc.c (powerpc_opcodes): Add tdui, twui, tdu, twu, tui, tu. --- a/opcodes/s390-opc.c +++ b/opcodes/s390-opc.c @@ -217,20 +217,23 @@ const struct s390_operand s390_operands[] = /* PC-relative address operands. */ -#define J12_12 69 /* PC relative offset at 12 */ +#define J12_12 69 /* 12 bit PC relative offset at 12 */ { 12, 12, S390_OPERAND_PCREL }, -#define J16_16 70 /* PC relative offset at 16 */ +#define J16_16 70 /* 16 bit PC relative offset at 16 */ { 16, 16, S390_OPERAND_PCREL }, -#define J16_32 71 /* PC relative offset at 16 */ +#define J16_32 71 /* 16 bit PC relative offset at 32 */ { 16, 32, S390_OPERAND_PCREL }, -#define J32_16 72 /* PC relative offset at 16 */ +#define J24_24 72 /* 24 bit PC relative offset at 24 */ + { 24, 24, S390_OPERAND_PCREL }, +#define J32_16 73 /* 32 bit PC relative offset at 16 */ { 32, 16, S390_OPERAND_PCREL }, + /* Conditional mask operands. */ -#define M_16OPT 73 /* 4 bit optional mask starting at 16 */ +#define M_16OPT 74 /* 4 bit optional mask starting at 16 */ { 4, 16, S390_OPERAND_OPTIONAL }, -#define M_20OPT 74 /* 4 bit optional mask starting at 20 */ +#define M_20OPT 75 /* 4 bit optional mask starting at 20 */ { 4, 20, S390_OPERAND_OPTIONAL }, }; @@ -284,7 +287,7 @@ const struct s390_operand s390_operands[] = #define INSTR_E 2, { 0,0,0,0,0,0 } /* e.g. pr */ #define INSTR_IE_UU 4, { U4_24,U4_28,0,0,0,0 } /* e.g. niai */ -#define INSTR_MII_UPI 6, { U4_8,J12_12,I24_24 } /* e.g. bprp */ +#define INSTR_MII_UPP 6, { U4_8,J12_12,J24_24 } /* e.g. bprp */ #define INSTR_RIE_RRP 6, { R_8,R_12,J16_16,0,0,0 } /* e.g. brxhg */ #define INSTR_RIE_RRPU 6, { R_8,R_12,U4_32,J16_16,0,0 } /* e.g. crj */ #define INSTR_RIE_RRP0 6, { R_8,R_12,J16_16,0,0,0 } /* e.g. crjne */ @@ -446,7 +449,7 @@ const struct s390_operand s390_operands[] = #define MASK_E { 0xff, 0xff, 0x00, 0x00, 0x00, 0x00 } #define MASK_IE_UU { 0xff, 0xff, 0xff, 0x00, 0x00, 0x00 } -#define MASK_MII_UPI { 0xff, 0x00, 0x00, 0x00, 0x00, 0x00 } +#define MASK_MII_UPP { 0xff, 0x00, 0x00, 0x00, 0x00, 0x00 } #define MASK_RIE_RRP { 0xff, 0x00, 0x00, 0x00, 0x00, 0xff } #define MASK_RIE_RRPU { 0xff, 0x00, 0x00, 0x00, 0x00, 0xff } #define MASK_RIE_RRP0 { 0xff, 0x00, 0x00, 0x00, 0xf0, 0xff } --- a/opcodes/s390-opc.txt +++ b/opcodes/s390-opc.txt @@ -1126,7 +1126,7 @@ e560 tbegin SIL_RDU "transaction begin" zEC12 zarch e561 tbeginc SIL_RDU "constrained transaction begin" zEC12 zarch b2f8 tend S_00 "transaction end" zEC12 zarch c7 bpp SMI_U0RDP "branch prediction preload" zEC12 zarch -c5 bprp MII_UPI "branch prediction relative preload" zEC12 zarch +c5 bprp MII_UPP "branch prediction relative preload" zEC12 zarch b2e8 ppa RRF_U0RR "perform processor assist" zEC12 zarch b2fa niai IE_UU "next instruction access intent" zEC12 zarch b98f crdte RRF_RMRR "compare and replace DAT table entry" zEC12 zarch