From: Claudiu Zissulescu Date: Mon, 27 Mar 2017 10:56:24 +0000 (+0200) Subject: [ARC] Disable TP register when building for bare metal. X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=81b98ef7697900c12d94f7f413613b8139a16624;p=gcc.git [ARC] Disable TP register when building for bare metal. gcc/ 2017-03-27 Claudiu Zissulescu * config/arc/elf.h (ARGET_ARC_TP_REGNO_DEFAULT): Define. * config/arc/linux.h (ARGET_ARC_TP_REGNO_DEFAULT): Likewise. * config/arc/arc.opt (mtp-regno): Use ARGET_ARC_TP_REGNO_DEFAULT. From-SVN: r246497 --- diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 598f03d42cc..2740aa6a89d 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2017-03-27 Claudiu Zissulescu + + * config/arc/elf.h (ARGET_ARC_TP_REGNO_DEFAULT): Define. + * config/arc/linux.h (ARGET_ARC_TP_REGNO_DEFAULT): Likewise. + * config/arc/arc.opt (mtp-regno): Use ARGET_ARC_TP_REGNO_DEFAULT. + 2017-03-27 Claudiu Zissulescu * config/arc/predicates.md (long_immediate_loadstore_operand): diff --git a/gcc/config/arc/arc.opt b/gcc/config/arc/arc.opt index 17af7368937..6060ded9911 100644 --- a/gcc/config/arc/arc.opt +++ b/gcc/config/arc/arc.opt @@ -469,7 +469,7 @@ EnumValue Enum(arc_fpu) String(fpud_all) Value(FPU_FPUD_ALL) mtp-regno= -Target RejectNegative Joined UInteger Var(arc_tp_regno) Init(25) +Target RejectNegative Joined UInteger Var(arc_tp_regno) Init(TARGET_ARC_TP_REGNO_DEFAULT) Specify thread pointer register number. mtp-regno=none diff --git a/gcc/config/arc/elf.h b/gcc/config/arc/elf.h index d2106c54f02..2b572a52322 100644 --- a/gcc/config/arc/elf.h +++ b/gcc/config/arc/elf.h @@ -53,3 +53,7 @@ along with GCC; see the file COPYING3. If not see # define MULTILIB_DEFAULTS { "mcpu=" ARC_MULTILIB_CPU_DEFAULT } # endif #endif + +/* Bare-metal toolchains do not need a thread pointer register. */ +#undef TARGET_ARC_TP_REGNO_DEFAULT +#define TARGET_ARC_TP_REGNO_DEFAULT -1 diff --git a/gcc/config/arc/linux.h b/gcc/config/arc/linux.h index 10c291cc432..6e1a96efc23 100644 --- a/gcc/config/arc/linux.h +++ b/gcc/config/arc/linux.h @@ -74,3 +74,7 @@ along with GCC; see the file COPYING3. If not see /* We do not have any MULTILIB_OPTIONS specified, so there are no MULTILIB_DEFAULTS. */ #undef MULTILIB_DEFAULTS + +/* Linux toolchains use r25 as the thread pointer register. */ +#undef TARGET_ARC_TP_REGNO_DEFAULT +#define TARGET_ARC_TP_REGNO_DEFAULT 25