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File _service:tar_scm:LoongArch-Get-__tls_get_addr-address-through-got-tab.patch of Package gcc
From a96dee6ba3c916f9a4329b196a0c5a1652fe294f Mon Sep 17 00:00:00 2001 From: Lulu Cheng <chenglulu@loongson.cn> Date: Thu, 18 Aug 2022 09:57:14 +0800 Subject: [PATCH 010/124] LoongArch: Get __tls_get_addr address through got table when disable plt. Fix bug, ICE with tls gd/ld var with -fno-plt. gcc/ChangeLog: * config/loongarch/loongarch.cc (loongarch_call_tls_get_addr): Get __tls_get_addr address through got table when disable plt. gcc/testsuite/ChangeLog: * gcc.target/loongarch/tls-gd-noplt.c: New test. Signed-off-by: Peng Fan <fanpeng@loongson.cn> Signed-off-by: ticat_fp <fanpeng@loongson.cn> --- gcc/config/loongarch/loongarch.cc | 14 ++++++++++++-- gcc/testsuite/gcc.target/loongarch/tls-gd-noplt.c | 12 ++++++++++++ 2 files changed, 24 insertions(+), 2 deletions(-) create mode 100644 gcc/testsuite/gcc.target/loongarch/tls-gd-noplt.c diff --git a/gcc/config/loongarch/loongarch.cc b/gcc/config/loongarch/loongarch.cc index 1b5af2c7d..76bf55ea4 100644 --- a/gcc/config/loongarch/loongarch.cc +++ b/gcc/config/loongarch/loongarch.cc @@ -2448,8 +2448,18 @@ loongarch_call_tls_get_addr (rtx sym, enum loongarch_symbol_type type, rtx v0) gcc_unreachable (); } - insn = emit_call_insn (gen_call_value_internal (v0, loongarch_tls_symbol, - const0_rtx)); + if (flag_plt) + insn = emit_call_insn (gen_call_value_internal (v0, loongarch_tls_symbol, + const0_rtx)); + else + { + rtx dest = gen_reg_rtx (Pmode); + rtx high = gen_reg_rtx (Pmode); + loongarch_emit_move (high, gen_rtx_HIGH (Pmode, loongarch_tls_symbol)); + emit_insn (gen_ld_from_got (Pmode, dest, high, loongarch_tls_symbol)); + insn = emit_call_insn (gen_call_value_internal (v0, dest, const0_rtx)); + } + RTL_CONST_CALL_P (insn) = 1; use_reg (&CALL_INSN_FUNCTION_USAGE (insn), a0); insn = get_insns (); diff --git a/gcc/testsuite/gcc.target/loongarch/tls-gd-noplt.c b/gcc/testsuite/gcc.target/loongarch/tls-gd-noplt.c new file mode 100644 index 000000000..32a0acf9b --- /dev/null +++ b/gcc/testsuite/gcc.target/loongarch/tls-gd-noplt.c @@ -0,0 +1,12 @@ +/* { dg-do compile } */ +/* { dg-options "-O2 -fno-plt -mcmodel=normal" } */ +/* { dg-final { scan-assembler "pcalau12i\t.*%got_pc_hi20\\(__tls_get_addr\\)" } } */ + +__attribute__ ((tls_model ("global-dynamic"))) __thread int a; + +void +test (void) +{ + a = 10; +} + -- 2.33.0
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