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- make ppc32 TLS PIC code sequences compatible with secure plt (#184446)

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(Richard Henderson and myself)
This commit is contained in:
aoliva 2006-03-10 01:03:09 +00:00
parent 417da0080c
commit 1d8a2210f2
1 changed files with 10 additions and 41 deletions
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51
gcc41-rh184446.patch
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@ -1,44 +1,13 @@
for gcc/ChangeLog
from Richard Henderson <rth@redhat.com>, Alexandre Oliva <aoliva@redhat.com>
* config/rs6000/rs6000.c (rs6000_legitimize_tls_address): Use
secure-plt load sequence to compute the GOT address for -fPIC
-msecure-plt.
Index: gcc/config/rs6000/rs6000.c Index: gcc/config/rs6000/rs6000.c
=================================================================== ===================================================================
--- gcc/config/rs6000/rs6000.c.orig 2006-03-09 20:02:13.000000000 -0300 --- gcc/config/rs6000/rs6000.c.orig 2006-03-09 20:02:13.000000000 -0300
+++ gcc/config/rs6000/rs6000.c 2006-03-09 20:02:31.000000000 -0300 +++ gcc/config/rs6000/rs6000.c 2006-03-09 22:00:43.000000000 -0300
@@ -3094,10 +3094,28 @@ rs6000_legitimize_tls_address (rtx addr, @@ -3081,7 +3081,7 @@ rs6000_legitimize_tls_address (rtx addr,
tmp3 = gen_reg_rtx (Pmode); {
mem = gen_const_mem (Pmode, tmp1); rtx gsym = rs6000_got_sym ();
got = gen_reg_rtx (Pmode);
- first = emit_insn (gen_load_toc_v4_PIC_1b (tempLR, gsym)); - if (flag_pic == 0)
- emit_move_insn (tmp1, tempLR); + if (flag_pic == 0 || (flag_pic && TARGET_SECURE_PLT))
- emit_move_insn (tmp2, mem); rs6000_emit_move (got, gsym, Pmode);
- emit_insn (gen_addsi3 (tmp3, tmp1, tmp2)); else
+ if (TARGET_SECURE_PLT) {
+ {
+ char buf[30];
+ rtx l;
+
+ ASM_GENERATE_INTERNAL_LABEL (buf, "LCF",
+ rs6000_pic_labelno++);
+ l = gen_rtx_SYMBOL_REF (Pmode, ggc_strdup (buf));
+
+ first = emit_insn (gen_load_toc_v4_PIC_1 (tempLR, l));
+ emit_move_insn (tmp1, tempLR);
+ emit_insn (gen_load_toc_v4_PIC_3b (tmp2, tmp1, gsym, l));
+ emit_insn (gen_load_toc_v4_PIC_3c (tmp3, tmp2, gsym, l));
+ }
+ else
+ {
+ first = emit_insn (gen_load_toc_v4_PIC_1b (tempLR, gsym));
+ emit_move_insn (tmp1, tempLR);
+ emit_move_insn (tmp2, mem);
+ emit_insn (gen_addsi3 (tmp3, tmp1, tmp2));
+ }
+
last = emit_move_insn (got, tmp3);
REG_NOTES (last) = gen_rtx_EXPR_LIST (REG_EQUAL, gsym,
REG_NOTES (last));