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Fix comment for cmse_nonsecure_call_clear_caller_saved

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2017-05-17  Thomas Preud'homme  <thomas.preudhomme@arm.com>

    gcc/
    * config/arm/arm.c (cmse_nonsecure_call_clear_caller_saved): Refer
    readers to __gnu_cmse_nonsecure_call libcall for saving, clearing and
    restoring of callee-saved registers.

From-SVN: r248142
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Thomas Preud'homme 2017-05-17 09:18:25 +00:00 committed by Thomas Preud'homme
parent d2d61a7469
commit 26092cc782
2 changed files with 10 additions and 3 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2017-05-17 Thomas Preud'homme <thomas.preudhomme@arm.com>
* config/arm/arm.c (cmse_nonsecure_call_clear_caller_saved): Refer
readers to __gnu_cmse_nonsecure_call libcall for saving, clearing and
restoring of callee-saved registers.
2017-05-17 Eric Botcazou <ebotcazou@adacore.com>
* compare-elim.c (equivalent_reg_at_start): Adjust outdated comment.

7
gcc/config/arm/arm.c
View File

@ -16909,9 +16909,10 @@ compute_not_to_clear_mask (tree arg_type, rtx arg_rtx, int regno,
return not_to_clear_mask;
}
/* Saves callee saved registers, clears callee saved registers and caller saved
registers not used to pass arguments before a cmse_nonsecure_call. And
restores the callee saved registers after. */
/* Clears caller saved registers not used to pass arguments before a
cmse_nonsecure_call. Saving, clearing and restoring of callee saved
registers is done in __gnu_cmse_nonsecure_call libcall.
See libgcc/config/arm/cmse_nonsecure_call.S. */
static void
cmse_nonsecure_call_clear_caller_saved (void)