From bcd530a7131f7830e80eae028fbfc2d0b5f531c6 Mon Sep 17 00:00:00 2001 From: Richard Sandiford Date: Sun, 24 Jul 2011 14:04:51 +0000 Subject: include/opcode/ 2011-07-24 Maciej W. Rozycki * mips.h (INSN_TRAP): Rename to... (INSN_NO_DELAY_SLOT): ... this. (INSN_SYNC): Remove macro. gas/ 2011-07-24 Maciej W. Rozycki * config/tc-mips.c (can_swap_branch_p): Adjust for the rename of INSN_TRAP to INSN_NO_DELAY_SLOT. Remove the check for INSN_SYNC as well as explicit checks for ERET and DERET when scheduling branch delay slots. opcodes/ 2011-07-24 Maciej W. Rozycki * mips-opc.c (NODS): New macro. (TRAP): Adjust for the rename of INSN_TRAP to INSN_NO_DELAY_SLOT. (DSP_VOLA): Likewise. (mips_builtin_opcodes): Add NODS annotation to "deret" and "eret". Replace INSN_SYNC with NODS throughout. Use NODS in place of TRAP for "wait", "waiti" and "yield". * mips16-opc.c (NODS): New macro. (TRAP): Adjust for the rename of INSN_TRAP to INSN_NO_DELAY_SLOT. (mips16_opcodes): Use NODS in place of TRAP for "jalrc", "jrc", "restore" and "save". --- gas/ChangeLog | 7 +++++++ gas/config/tc-mips.c | 20 ++++++------------- include/opcode/ChangeLog | 6 ++++++ include/opcode/mips.h | 7 +++---- opcodes/ChangeLog | 13 +++++++++++++ opcodes/mips-opc.c | 50 +++++++++++++++++++++++++----------------------- opcodes/mips16-opc.c | 15 ++++++++------- 7 files changed, 69 insertions(+), 49 deletions(-) diff --git a/gas/ChangeLog b/gas/ChangeLog index d0d2693..508a3bb 100644 --- a/gas/ChangeLog +++ b/gas/ChangeLog @@ -1,3 +1,10 @@ +2011-07-24 Maciej W. Rozycki + + * config/tc-mips.c (can_swap_branch_p): Adjust for the rename of + INSN_TRAP to INSN_NO_DELAY_SLOT. Remove the check for INSN_SYNC + as well as explicit checks for ERET and DERET when scheduling + branch delay slots. + 2011-07-22 H.J. Lu * config/tc-i386.c (cpu_arch): Add k1om. diff --git a/gas/config/tc-mips.c b/gas/config/tc-mips.c index d08bcd3..afa8b38 100644 --- a/gas/config/tc-mips.c +++ b/gas/config/tc-mips.c @@ -3148,21 +3148,13 @@ can_swap_branch_p (struct mips_cl_insn *ip) && history[0].frag->fr_type == rs_machine_dependent) return FALSE; - /* We do not swap with a trap instruction, since it complicates trap - handlers to have the trap instruction be in a delay slot. */ + /* We do not swap with instructions that cannot architecturally + be placed in a branch delay slot, such as SYNC or ERET. We + also refrain from swapping with a trap instruction, since it + complicates trap handlers to have the trap instruction be in + a delay slot. */ prev_pinfo = history[0].insn_mo->pinfo; - if (prev_pinfo & INSN_TRAP) - return FALSE; - - /* If the previous instruction is a sync, sync.l, or sync.p, we can - not swap. */ - if (prev_pinfo & INSN_SYNC) - return FALSE; - - /* If the previous instruction is an ERET or DERET, avoid the swap. */ - if (history[0].insn_opcode == INSN_ERET) - return FALSE; - if (history[0].insn_opcode == INSN_DERET) + if (prev_pinfo & INSN_NO_DELAY_SLOT) return FALSE; /* Check for conflicts between the branch and the instructions diff --git a/include/opcode/ChangeLog b/include/opcode/ChangeLog index 5e30fbc..7f4cdab 100644 --- a/include/opcode/ChangeLog +++ b/include/opcode/ChangeLog @@ -1,3 +1,9 @@ +2011-07-24 Maciej W. Rozycki + + * mips.h (INSN_TRAP): Rename to... + (INSN_NO_DELAY_SLOT): ... this. + (INSN_SYNC): Remove macro. + 2011-07-01 Eric B. Weddington * avr.h (AVR_ISA_AVR6): Remove AVR_ISA_SPMX as it was actually diff --git a/include/opcode/mips.h b/include/opcode/mips.h index 0685bab..72a478c 100644 --- a/include/opcode/mips.h +++ b/include/opcode/mips.h @@ -489,8 +489,9 @@ struct mips_opcode #define INSN_WRITE_HI 0x01000000 /* Modifies the LO register. */ #define INSN_WRITE_LO 0x02000000 -/* Takes a trap (easier to keep out of delay slot). */ -#define INSN_TRAP 0x04000000 +/* Not to be placed in a branch delay slot, either architecturally + or for ease of handling (such as with instructions that take a trap). */ +#define INSN_NO_DELAY_SLOT 0x04000000 /* Instruction stores value into memory. */ #define INSN_STORE_MEMORY 0x08000000 /* Instruction uses single precision floating point. */ @@ -499,8 +500,6 @@ struct mips_opcode #define FP_D 0x20000000 /* Instruction is part of the tx39's integer multiply family. */ #define INSN_MULT 0x40000000 -/* Instruction synchronize shared memory. */ -#define INSN_SYNC 0x80000000 /* Instruction is actually a macro. It should be ignored by the disassembler, and requires special treatment by the assembler. */ #define INSN_MACRO 0xffffffff diff --git a/opcodes/ChangeLog b/opcodes/ChangeLog index ba26197..642490c 100644 --- a/opcodes/ChangeLog +++ b/opcodes/ChangeLog @@ -1,3 +1,16 @@ +2011-07-24 Maciej W. Rozycki + + * mips-opc.c (NODS): New macro. + (TRAP): Adjust for the rename of INSN_TRAP to INSN_NO_DELAY_SLOT. + (DSP_VOLA): Likewise. + (mips_builtin_opcodes): Add NODS annotation to "deret" and + "eret". Replace INSN_SYNC with NODS throughout. Use NODS in + place of TRAP for "wait", "waiti" and "yield". + * mips16-opc.c (NODS): New macro. + (TRAP): Adjust for the rename of INSN_TRAP to INSN_NO_DELAY_SLOT. + (mips16_opcodes): Use NODS in place of TRAP for "jalrc", "jrc", + "restore" and "save". + 2011-07-22 H.J. Lu * configure.in: Handle bfd_k1om_arch. diff --git a/opcodes/mips-opc.c b/opcodes/mips-opc.c index 8f51643..f8770a4 100644 --- a/opcodes/mips-opc.c +++ b/opcodes/mips-opc.c @@ -37,7 +37,8 @@ #define COD INSN_COPROC_MOVE_DELAY #define CLD INSN_COPROC_MEMORY_DELAY #define CBL INSN_COND_BRANCH_LIKELY -#define TRAP INSN_TRAP +#define NODS INSN_NO_DELAY_SLOT +#define TRAP INSN_NO_DELAY_SLOT #define SM INSN_STORE_MEMORY #define WR_d INSN_WRITE_GPR_D @@ -150,13 +151,14 @@ to track dependencies of these fields. However, "bposge32" is a branch instruction that depends on the "pos" field. In order to make sure that GAS does not reorder DSP instructions - that writes the "pos" field and "bposge32", we add DSP_VOLA (INSN_TRAP) - attribute to those instructions that write the "pos" field. */ + that writes the "pos" field and "bposge32", we add DSP_VOLA + (INSN_NO_DELAY_SLOT) attribute to those instructions that write the "pos" + field. */ #define WR_a WR_HILO /* Write dsp accumulators (reuse WR_HILO) */ #define RD_a RD_HILO /* Read dsp accumulators (reuse RD_HILO) */ #define MOD_a WR_a|RD_a -#define DSP_VOLA INSN_TRAP +#define DSP_VOLA INSN_NO_DELAY_SLOT #define D32 INSN_DSP #define D33 INSN_DSPR2 #define D64 INSN_DSP64 @@ -631,7 +633,7 @@ const struct mips_opcode mips_builtin_opcodes[] = /* dctr and dctw are used on the r5000. */ {"dctr", "o(b)", 0xbc050000, 0xfc1f0000, RD_b, 0, I3 }, {"dctw", "o(b)", 0xbc090000, 0xfc1f0000, RD_b, 0, I3 }, -{"deret", "", 0x4200001f, 0xffffffff, 0, 0, I32|G2 }, +{"deret", "", 0x4200001f, 0xffffffff, NODS, 0, I32|G2 }, {"dext", "t,r,I,+I", 0, (int) M_DEXT, INSN_MACRO, 0, I65 }, {"dext", "t,r,+A,+C", 0x7c000003, 0xfc00003f, WR_t|RD_s, 0, I65 }, {"dextm", "t,r,+A,+G", 0x7c000001, 0xfc00003f, WR_t|RD_s, 0, I65 }, @@ -763,7 +765,7 @@ const struct mips_opcode mips_builtin_opcodes[] = {"ei", "t", 0x41606020, 0xffe0ffff, WR_t|WR_C0, 0, I33|IOCT}, {"emt", "", 0x41600be1, 0xffffffff, TRAP, 0, MT32 }, {"emt", "t", 0x41600be1, 0xffe0ffff, TRAP|WR_t, 0, MT32 }, -{"eret", "", 0x42000018, 0xffffffff, 0, 0, I3_32 }, +{"eret", "", 0x42000018, 0xffffffff, NODS, 0, I3_32 }, {"evpe", "", 0x41600021, 0xffffffff, TRAP, 0, MT32 }, {"evpe", "t", 0x41600021, 0xffe0ffff, TRAP|WR_t, 0, MT32 }, {"ext", "t,r,+A,+C", 0x7c000000, 0xfc00003f, WR_t|RD_s, 0, I33 }, @@ -1400,19 +1402,19 @@ const struct mips_opcode mips_builtin_opcodes[] = {"invalidate", "t,o(b)",0xb8000000, 0xfc000000, RD_t|RD_b, 0, I2 }, /* same */ {"invalidate", "t,A(b)",0, (int) M_SWR_AB, INSN_MACRO, 0, I2 }, /* as swr */ {"swxc1", "S,t(b)", 0x4c000008, 0xfc0007ff, SM|RD_S|RD_t|RD_b|FP_S, 0, I4_33 }, -{"synciobdma", "", 0x0000008f, 0xffffffff, INSN_SYNC, 0, IOCT }, -{"syncs", "", 0x0000018f, 0xffffffff, INSN_SYNC, 0, IOCT }, -{"syncw", "", 0x0000010f, 0xffffffff, INSN_SYNC, 0, IOCT }, -{"syncws", "", 0x0000014f, 0xffffffff, INSN_SYNC, 0, IOCT }, -{"sync_acquire", "", 0x0000044f, 0xffffffff, INSN_SYNC, 0, I33 }, -{"sync_mb", "", 0x0000040f, 0xffffffff, INSN_SYNC, 0, I33 }, -{"sync_release", "", 0x0000048f, 0xffffffff, INSN_SYNC, 0, I33 }, -{"sync_rmb", "", 0x000004cf, 0xffffffff, INSN_SYNC, 0, I33 }, -{"sync_wmb", "", 0x0000010f, 0xffffffff, INSN_SYNC, 0, I33 }, -{"sync", "", 0x0000000f, 0xffffffff, INSN_SYNC, 0, I2|G1 }, -{"sync", "1", 0x0000000f, 0xfffff83f, INSN_SYNC, 0, I32 }, -{"sync.p", "", 0x0000040f, 0xffffffff, INSN_SYNC, 0, I2 }, -{"sync.l", "", 0x0000000f, 0xffffffff, INSN_SYNC, 0, I2 }, +{"synciobdma", "", 0x0000008f, 0xffffffff, NODS, 0, IOCT }, +{"syncs", "", 0x0000018f, 0xffffffff, NODS, 0, IOCT }, +{"syncw", "", 0x0000010f, 0xffffffff, NODS, 0, IOCT }, +{"syncws", "", 0x0000014f, 0xffffffff, NODS, 0, IOCT }, +{"sync_acquire", "", 0x0000044f, 0xffffffff, NODS, 0, I33 }, +{"sync_mb", "", 0x0000040f, 0xffffffff, NODS, 0, I33 }, +{"sync_release", "", 0x0000048f, 0xffffffff, NODS, 0, I33 }, +{"sync_rmb", "", 0x000004cf, 0xffffffff, NODS, 0, I33 }, +{"sync_wmb", "", 0x0000010f, 0xffffffff, NODS, 0, I33 }, +{"sync", "", 0x0000000f, 0xffffffff, NODS, 0, I2|G1 }, +{"sync", "1", 0x0000000f, 0xfffff83f, NODS, 0, I32 }, +{"sync.p", "", 0x0000040f, 0xffffffff, NODS, 0, I2 }, +{"sync.l", "", 0x0000000f, 0xffffffff, NODS, 0, I2 }, {"synci", "o(b)", 0x041f0000, 0xfc1f0000, SM|RD_b, 0, I33 }, {"syscall", "", 0x0000000c, 0xffffffff, TRAP, 0, I1 }, {"syscall", "B", 0x0000000c, 0xfc00003f, TRAP, 0, I1 }, @@ -1481,9 +1483,9 @@ const struct mips_opcode mips_builtin_opcodes[] = {"wacl.ob", "Y,Z", 0x7800003e, 0xffe007ff, RD_S|RD_T|FP_D, WR_MACC, MX|SB1 }, {"wacl.ob", "S,T", 0x4800003e, 0xffe007ff, RD_S|RD_T, 0, N54 }, {"wacl.qh", "Y,Z", 0x7820003e, 0xffe007ff, RD_S|RD_T|FP_D, WR_MACC, MX }, -{"wait", "", 0x42000020, 0xffffffff, TRAP, 0, I3_32 }, -{"wait", "J", 0x42000020, 0xfe00003f, TRAP, 0, I32|N55 }, -{"waiti", "", 0x42000020, 0xffffffff, TRAP, 0, L1 }, +{"wait", "", 0x42000020, 0xffffffff, NODS, 0, I3_32 }, +{"wait", "J", 0x42000020, 0xfe00003f, NODS, 0, I32|N55 }, +{"waiti", "", 0x42000020, 0xffffffff, NODS, 0, L1 }, {"wrpgpr", "d,w", 0x41c00000, 0xffe007ff, RD_t, 0, I33 }, {"wsbh", "d,w", 0x7c0000a0, 0xffe007ff, WR_d|RD_t, 0, I33 }, {"xor", "d,v,t", 0x00000026, 0xfc0007ff, WR_d|RD_s|RD_t, 0, I1 }, @@ -1496,8 +1498,8 @@ const struct mips_opcode mips_builtin_opcodes[] = {"xor.ob", "D,S,k", 0x4bc0000d, 0xffe0003f, WR_D|RD_S|RD_T, 0, N54 }, {"xor.qh", "X,Y,Q", 0x7820000d, 0xfc20003f, WR_D|RD_S|RD_T|FP_D, 0, MX }, {"xori", "t,r,i", 0x38000000, 0xfc000000, WR_t|RD_s, 0, I1 }, -{"yield", "s", 0x7c000009, 0xfc1fffff, TRAP|RD_s, 0, MT32 }, -{"yield", "d,s", 0x7c000009, 0xfc1f07ff, TRAP|WR_d|RD_s, 0, MT32 }, +{"yield", "s", 0x7c000009, 0xfc1fffff, NODS|RD_s, 0, MT32 }, +{"yield", "d,s", 0x7c000009, 0xfc1f07ff, NODS|WR_d|RD_s, 0, MT32 }, /* User Defined Instruction. */ {"udi0", "s,t,d,+1",0x70000010, 0xfc00003f, WR_d|RD_s|RD_t, 0, I33 }, diff --git a/opcodes/mips16-opc.c b/opcodes/mips16-opc.c index 0e50aec..f46cf28 100644 --- a/opcodes/mips16-opc.c +++ b/opcodes/mips16-opc.c @@ -58,7 +58,8 @@ #define RD_HI INSN_READ_HI #define RD_LO INSN_READ_LO -#define TRAP INSN_TRAP +#define NODS INSN_NO_DELAY_SLOT +#define TRAP INSN_NO_DELAY_SLOT #define I1 INSN_ISA1 #define I3 INSN_ISA3 @@ -174,10 +175,10 @@ const struct mips_opcode mips16_opcodes[] = /* MIPS16e compact branches. We keep them near the ordinary branches so that we easily find them when converting a normal branch to a compact one. */ -{"jalrc", "x", 0xe8c0, 0xf8ff, UBR|WR_31|RD_x|TRAP, 0, I32 }, -{"jalrc", "R,x", 0xe8c0, 0xf8ff, UBR|WR_31|RD_x|TRAP, 0, I32 }, -{"jrc", "x", 0xe880, 0xf8ff, UBR|RD_x|TRAP, 0, I32 }, -{"jrc", "R", 0xe8a0, 0xffff, UBR|RD_31|TRAP, 0, I32 }, +{"jalrc", "x", 0xe8c0, 0xf8ff, UBR|WR_31|RD_x|NODS, 0, I32 }, +{"jalrc", "R,x", 0xe8c0, 0xf8ff, UBR|WR_31|RD_x|NODS, 0, I32 }, +{"jrc", "x", 0xe880, 0xf8ff, UBR|RD_x|NODS, 0, I32 }, +{"jrc", "R", 0xe8a0, 0xffff, UBR|RD_31|NODS, 0, I32 }, {"lb", "y,5(x)", 0x8000, 0xf800, WR_y|RD_x, 0, I1 }, {"lbu", "y,5(x)", 0xa000, 0xf800, WR_y|RD_x, 0, I1 }, {"ld", "y,D(x)", 0x3800, 0xf800, WR_y|RD_x, 0, I3 }, @@ -234,8 +235,8 @@ const struct mips_opcode mips16_opcodes[] = {"sw", "R,V(S)", 0x6200, 0xff00, RD_31|RD_SP, 0, I1 }, {"xor", "x,y", 0xe80e, 0xf81f, WR_x|RD_x|RD_y, 0, I1 }, /* MIPS16e additions */ -{"restore", "M", 0x6400, 0xff80, WR_31|RD_SP|WR_SP|TRAP, 0, I32 }, -{"save", "m", 0x6480, 0xff80, RD_31|RD_SP|WR_SP|TRAP, 0, I32 }, +{"restore", "M", 0x6400, 0xff80, WR_31|RD_SP|WR_SP|NODS, 0, I32 }, +{"save", "m", 0x6480, 0xff80, RD_31|RD_SP|WR_SP|NODS, 0, I32 }, {"sdbbp", "6", 0xe801, 0xf81f, TRAP, 0, I32 }, {"seb", "x", 0xe891, 0xf8ff, WR_x|RD_x, 0, I32 }, {"seh", "x", 0xe8b1, 0xf8ff, WR_x|RD_x, 0, I32 }, -- cgit v1.1