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author | Mei Ligang <ligang@sunnorth.com.cn> | 2006-11-16 04:36:25 +0000 |
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committer | Mei Ligang <ligang@sunnorth.com.cn> | 2006-11-16 04:36:25 +0000 |
commit | 41c55c875aae843a3d8830cd23ff9265ba262ae8 (patch) | |
tree | 47ac0cdc0882e502134926361014515470475e4a /gas/config | |
parent | c06b7b0ba3f6aaa4a3f9586689ef8bfdbd17454e (diff) | |
download | gdb-41c55c875aae843a3d8830cd23ff9265ba262ae8.zip gdb-41c55c875aae843a3d8830cd23ff9265ba262ae8.tar.gz gdb-41c55c875aae843a3d8830cd23ff9265ba262ae8.tar.bz2 |
* config/tc-score.c (score_relax_frag): If next frag contains 32 bit branch
instruction, handle it specially.
(score_insns): Modify 32 bit branch instruction.
Diffstat (limited to 'gas/config')
-rw-r--r-- | gas/config/tc-score.c | 48 |
1 files changed, 23 insertions, 25 deletions
diff --git a/gas/config/tc-score.c b/gas/config/tc-score.c index 385e9ce..6d602a0 100644 --- a/gas/config/tc-score.c +++ b/gas/config/tc-score.c @@ -375,21 +375,21 @@ static const struct asm_opcode score_insns[] = {"andri", 0x18000000, 0x3e000001, 0x8000, Rd_Rs_I14, do_rdrsi14}, {"andri.c", 0x18000001, 0x3e000001, 0x8000, Rd_Rs_I14, do_rdrsi14}, {"and!", 0x2004, 0x700f, 0x00000021, Rd_Rs, do16_rdrs}, - {"bcs", 0x08000000, 0x3e007c01, 0x8000, PC_DISP19div2, do_branch}, - {"bcc", 0x08000400, 0x3e007c01, 0x8000, PC_DISP19div2, do_branch}, - {"bcnz", 0x08003800, 0x3e007c01, 0x8000, PC_DISP19div2, do_branch}, + {"bcs", 0x08000000, 0x3e007c01, 0x4000, PC_DISP19div2, do_branch}, + {"bcc", 0x08000400, 0x3e007c01, 0x4000, PC_DISP19div2, do_branch}, + {"bcnz", 0x08003800, 0x3e007c01, 0x4000, PC_DISP19div2, do_branch}, {"bcsl", 0x08000001, 0x3e007c01, 0x8000, PC_DISP19div2, do_branch}, {"bccl", 0x08000401, 0x3e007c01, 0x8000, PC_DISP19div2, do_branch}, {"bcnzl", 0x08003801, 0x3e007c01, 0x8000, PC_DISP19div2, do_branch}, {"bcs!", 0x4000, 0x7f00, 0x08000000, PC_DISP8div2, do16_branch}, {"bcc!", 0x4100, 0x7f00, 0x08000400, PC_DISP8div2, do16_branch}, {"bcnz!", 0x4e00, 0x7f00, 0x08003800, PC_DISP8div2, do16_branch}, - {"beq", 0x08001000, 0x3e007c01, 0x8000, PC_DISP19div2, do_branch}, + {"beq", 0x08001000, 0x3e007c01, 0x4000, PC_DISP19div2, do_branch}, {"beql", 0x08001001, 0x3e007c01, 0x8000, PC_DISP19div2, do_branch}, {"beq!", 0x4400, 0x7f00, 0x08001000, PC_DISP8div2, do16_branch}, - {"bgtu", 0x08000800, 0x3e007c01, 0x8000, PC_DISP19div2, do_branch}, - {"bgt", 0x08001800, 0x3e007c01, 0x8000, PC_DISP19div2, do_branch}, - {"bge", 0x08002000, 0x3e007c01, 0x8000, PC_DISP19div2, do_branch}, + {"bgtu", 0x08000800, 0x3e007c01, 0x4000, PC_DISP19div2, do_branch}, + {"bgt", 0x08001800, 0x3e007c01, 0x4000, PC_DISP19div2, do_branch}, + {"bge", 0x08002000, 0x3e007c01, 0x4000, PC_DISP19div2, do_branch}, {"bgtul", 0x08000801, 0x3e007c01, 0x8000, PC_DISP19div2, do_branch}, {"bgtl", 0x08001801, 0x3e007c01, 0x8000, PC_DISP19div2, do_branch}, {"bgel", 0x08002001, 0x3e007c01, 0x8000, PC_DISP19div2, do_branch}, @@ -405,9 +405,9 @@ static const struct asm_opcode score_insns[] = {"bitset!", 0x6005, 0x7007, 0x0000002b, Rd_I5, do16_rdi5}, {"bittst!", 0x6006, 0x7007, 0x0000002d, Rd_I5, do16_rdi5}, {"bittgl!", 0x6007, 0x7007, 0x0000002f, Rd_I5, do16_rdi5}, - {"bleu", 0x08000c00, 0x3e007c01, 0x8000, PC_DISP19div2, do_branch}, - {"ble", 0x08001c00, 0x3e007c01, 0x8000, PC_DISP19div2, do_branch}, - {"blt", 0x08002400, 0x3e007c01, 0x8000, PC_DISP19div2, do_branch}, + {"bleu", 0x08000c00, 0x3e007c01, 0x4000, PC_DISP19div2, do_branch}, + {"ble", 0x08001c00, 0x3e007c01, 0x4000, PC_DISP19div2, do_branch}, + {"blt", 0x08002400, 0x3e007c01, 0x4000, PC_DISP19div2, do_branch}, {"bleul", 0x08000c01, 0x3e007c01, 0x8000, PC_DISP19div2, do_branch}, {"blel", 0x08001c01, 0x3e007c01, 0x8000, PC_DISP19div2, do_branch}, {"bltl", 0x08002401, 0x3e007c01, 0x8000, PC_DISP19div2, do_branch}, @@ -415,13 +415,13 @@ static const struct asm_opcode score_insns[] = {"bleu!", 0x4300, 0x7f00, 0x08000c00, PC_DISP8div2, do16_branch}, {"ble!", 0x4700, 0x7f00, 0x08001c00, PC_DISP8div2, do16_branch}, {"blt!", 0x4900, 0x7f00, 0x08002400, PC_DISP8div2, do16_branch}, - {"bmi", 0x08002800, 0x3e007c01, 0x8000, PC_DISP19div2, do_branch}, + {"bmi", 0x08002800, 0x3e007c01, 0x4000, PC_DISP19div2, do_branch}, {"bmil", 0x08002801, 0x3e007c01, 0x8000, PC_DISP19div2, do_branch}, {"bmi!", 0x00004a00, 0x00007f00, 0x08002800, PC_DISP8div2, do16_branch}, - {"bne", 0x08001400, 0x3e007c01, 0x8000, PC_DISP19div2, do_branch}, + {"bne", 0x08001400, 0x3e007c01, 0x4000, PC_DISP19div2, do_branch}, {"bnel", 0x08001401, 0x3e007c01, 0x8000, PC_DISP19div2, do_branch}, {"bne!", 0x4500, 0x7f00, 0x08001400, PC_DISP8div2, do16_branch}, - {"bpl", 0x08002c00, 0x3e007c01, 0x8000, PC_DISP19div2, do_branch}, + {"bpl", 0x08002c00, 0x3e007c01, 0x4000, PC_DISP19div2, do_branch}, {"bpll", 0x08002c01, 0x3e007c01, 0x8000, PC_DISP19div2, do_branch}, {"bpl!", 0x4b00, 0x7f00, 0x08002c00, PC_DISP8div2, do16_branch}, {"brcs", 0x00000008, 0x3e007fff, 0x0004, x_Rs_x, do_rs}, @@ -488,14 +488,14 @@ static const struct asm_opcode score_insns[] = {"brvcl!", 0x0d0c, 0x7f0f, 0x00003409, x_Rs, do16_xrs}, {"brcnzl!", 0x0e0c, 0x7f0f, 0x00003809, x_Rs, do16_xrs}, {"brl!", 0x0f0c, 0x7f0f, 0x00003c09, x_Rs, do16_xrs}, - {"bvs", 0x08003000, 0x3e007c01, 0x8000, PC_DISP19div2, do_branch}, - {"bvc", 0x08003400, 0x3e007c01, 0x8000, PC_DISP19div2, do_branch}, + {"bvs", 0x08003000, 0x3e007c01, 0x4000, PC_DISP19div2, do_branch}, + {"bvc", 0x08003400, 0x3e007c01, 0x4000, PC_DISP19div2, do_branch}, {"bvsl", 0x08003001, 0x3e007c01, 0x8000, PC_DISP19div2, do_branch}, {"bvcl", 0x08003401, 0x3e007c01, 0x8000, PC_DISP19div2, do_branch}, {"bvs!", 0x4c00, 0x7f00, 0x08003000, PC_DISP8div2, do16_branch}, {"bvc!", 0x4d00, 0x7f00, 0x08003400, PC_DISP8div2, do16_branch}, {"b!", 0x4f00, 0x7f00, 0x08003c00, PC_DISP8div2, do16_branch}, - {"b", 0x08003c00, 0x3e007c01, 0x08003c00, PC_DISP19div2, do_branch}, + {"b", 0x08003c00, 0x3e007c01, 0x4000, PC_DISP19div2, do_branch}, {"cache", 0x30000000, 0x3ff00000, 0x8000, OP5_rvalueRs_SI15, do_cache}, {"ceinst", 0x38000000, 0x3e000000, 0x8000, I5_Rs_Rs_I5_OP5, do_ceinst}, {"clz", 0x3800000d, 0x3e007fff, 0x8000, Rd_Rs_x, do_rdrs}, @@ -4609,11 +4609,10 @@ do_branch (char *str) /* Branch 32 offset field : 20 bit, 16 bit branch offset field : 8 bit. */ inst.instruction |= (inst.reloc.exp.X_add_number & 0x3fe) | ((inst.reloc.exp.X_add_number & 0xffc00) << 5); - /* Take the branch condition code. */ - inst.relax_inst = 0x4000 | (((inst.instruction >> 10) & 0xf) << 8); - - if ((abs_value & 0xfffffe00) == 0) + /* Compute 16 bit branch instruction. */ + if ((inst.relax_inst != 0x8000) && (abs_value & 0xfffffe00) == 0) { + inst.relax_inst |= (((inst.instruction >> 10) & 0xf) << 8); inst.relax_inst |= ((inst.reloc.exp.X_add_number >> 1) & 0xff); inst.relax_size = 2; } @@ -4621,9 +4620,6 @@ do_branch (char *str) { inst.relax_inst = 0x8000; } - - if (inst.instruction & 1) - inst.relax_inst = 0x8000; } static void @@ -5045,7 +5041,9 @@ score_relax_frag (asection * sec ATTRIBUTE_UNUSED, fragS * fragp, long stretch A n_insn_size = RELAX_OLD (next_fragp->fr_subtype); } - n_relaxable_p = RELAX_OPT (next_fragp->fr_subtype); + if (RELAX_TYPE (next_fragp->fr_subtype) == PC_DISP19div2) + b32_relax_to_b16 (next_fragp); + n_relaxable_p = RELAX_OPT (next_fragp->fr_subtype); if (word_align_p) { @@ -5061,7 +5059,7 @@ score_relax_frag (asection * sec ATTRIBUTE_UNUSED, fragS * fragp, long stretch A else if (insn_size == 2) { /* 16 -> 32. */ - if (relaxable_p && ((n_insn_size == 4) && !n_relaxable_p)) + if (relaxable_p && (((n_insn_size == 4) && !n_relaxable_p) || (n_insn_size > 4))) { grows += 2; do_relax_p = 1; |