From 097dba1357327309c5d9f14bc85d977651ee929f Mon Sep 17 00:00:00 2001 From: Nick Clifton Date: Tue, 13 Apr 2004 16:47:58 +0000 Subject: [PATCH] Fix inifnite loop problem with M32R port --- gas/ChangeLog | 5 +++++ gas/config/tc-m32r.c | 34 +++++++++++++++++++++++++++------- gas/testsuite/ChangeLog | 5 +++++ gas/testsuite/gas/m32r/m32r2.exp | 1 + gas/testsuite/gas/m32r/parallel-2.d | 10 ++++++++++ gas/testsuite/gas/m32r/parallel-2.s | 7 +++++++ 6 files changed, 55 insertions(+), 7 deletions(-) create mode 100644 gas/testsuite/gas/m32r/parallel-2.d create mode 100644 gas/testsuite/gas/m32r/parallel-2.s diff --git a/gas/ChangeLog b/gas/ChangeLog index 9cb2f08..e50a297 100644 --- a/gas/ChangeLog +++ b/gas/ChangeLog @@ -1,3 +1,8 @@ +2004-04-13 Kazuhiro Inaoka + + * config/tc-m32r.c (md_assemble): Fixed infinite loop bug + in parallel. + 2004-04-11 Thiemo Seufer * Makefile.am: Remove mips from aout targets. diff --git a/gas/config/tc-m32r.c b/gas/config/tc-m32r.c index 7b01516..e990d9d 100644 --- a/gas/config/tc-m32r.c +++ b/gas/config/tc-m32r.c @@ -1382,6 +1382,14 @@ md_assemble (str) prev_insn.insn is NULL when we're on a 32 bit boundary. */ on_32bit_boundary_p = prev_insn.insn == NULL; + /* Change a frag to, if each insn to swap is in a different frag. + It must keep only one instruction in a frag. */ + if (parallel() && on_32bit_boundary_p) + { + frag_wane (frag_now); + frag_new (0); + } + /* Look to see if this instruction can be combined with the previous instruction to make one, parallel, 32 bit instruction. If the previous instruction (potentially) changed the flow of @@ -1442,13 +1450,25 @@ md_assemble (str) else if (insn.frag->fr_opcode == insn.addr) insn.frag->fr_opcode = prev_insn.addr; - /* Update the addresses in any fixups. - Note that we don't have to handle the case where each insn is in - a different frag as we ensure they're in the same frag above. */ - for (i = 0; i < prev_insn.num_fixups; ++i) - prev_insn.fixups[i]->fx_where += 2; - for (i = 0; i < insn.num_fixups; ++i) - insn.fixups[i]->fx_where -= 2; + /* Change a frag to, if each insn is in a different frag. + It must keep only one instruction in a frag. */ + if (prev_insn.frag != insn.frag) + { + for (i = 0; i < prev_insn.num_fixups; ++i) + prev_insn.fixups[i]->fx_frag = insn.frag; + for (i = 0; i < insn.num_fixups; ++i) + insn.fixups[i]->fx_frag = prev_insn.frag; + } + else + { + /* Update the addresses in any fixups. + Note that we don't have to handle the case where each insn is in + a different frag as we ensure they're in the same frag above. */ + for (i = 0; i < prev_insn.num_fixups; ++i) + prev_insn.fixups[i]->fx_where += 2; + for (i = 0; i < insn.num_fixups; ++i) + insn.fixups[i]->fx_where -= 2; + } } /* Keep track of whether we've seen a pair of 16 bit insns. diff --git a/gas/testsuite/ChangeLog b/gas/testsuite/ChangeLog index febbce8..9ca420c 100644 --- a/gas/testsuite/ChangeLog +++ b/gas/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2004-04-13 Kazuhiro Inaoka + + * gas/m32r/parallel-2.s, gas/m32r/parallel-2.d: Add a new test + case for parallel code. + 2004-04-01 Asgari Jinia * gas/sh/renesas-1.s, gas/sh/renesas-1.d: New test for -renesas diff --git a/gas/testsuite/gas/m32r/m32r2.exp b/gas/testsuite/gas/m32r/m32r2.exp index 03a160a..f5f7415 100644 --- a/gas/testsuite/gas/m32r/m32r2.exp +++ b/gas/testsuite/gas/m32r/m32r2.exp @@ -2,4 +2,5 @@ if [istarget m32r*-*-*] { run_dump_test "m32r2" + run_dump_test "parallel-2" } diff --git a/gas/testsuite/gas/m32r/parallel-2.d b/gas/testsuite/gas/m32r/parallel-2.d new file mode 100644 index 0000000..5638c33 --- /dev/null +++ b/gas/testsuite/gas/m32r/parallel-2.d @@ -0,0 +1,10 @@ +#as: -m32r2 -O +#objdump: -dr + +.*: +file format .* + +Disassembly of section .text: + +0+0000 : + 0: 04 a5 24 46 add r4,r5 -> st r4,@r6 + 4: 7c ff c6 04 bc 0 \|\| addi r6,[#]4 diff --git a/gas/testsuite/gas/m32r/parallel-2.s b/gas/testsuite/gas/m32r/parallel-2.s new file mode 100644 index 0000000..7ea40c2 --- /dev/null +++ b/gas/testsuite/gas/m32r/parallel-2.s @@ -0,0 +1,7 @@ + .text +test: + add r4,r5 + st r4,@(r6) + addi r6,#4 + .debugsym .LM568 + bc.s test -- 2.7.4