关于GCC对cpu类型的支持

Q：如何获取gcc对cpu类型的支持呢？

A：从下面的内容信息可获知。

http://gcc.gnu.org/ml/gcc-patches/2010-09/msg00824.html

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2010-09-09  Ramana Radhakrishnan  <[e-mail]>            * config/arm/bpabi.h (BE8_LINK_SPEC): Handle cortex-a15.        * config/arm/arm-cores.def (cortex-a15): New core. Treat it as av7-a.        * config/arm/arm-tune.md: Regenerate.        * doc/invoke.texi (ARM Options): Document it.-- 

Index: gcc/config/arm/arm-cores.def===================================================================--- gcc/config/arm/arm-cores.def(revision 164080)+++ gcc/config/arm/arm-cores.def(working copy)@@ -121,6 +121,7 @@ ARM_CORE("arm1156t2f-s",  arm1156t2fs,   ARM_CORE("cortex-a5",  cortexa5,7A, FL_LDSCHED, 9e) ARM_CORE("cortex-a8",  cortexa8,7A, FL_LDSCHED, 9e) ARM_CORE("cortex-a9",  cortexa9,7A, FL_LDSCHED, cortex_a9)+ARM_CORE("cortex-a15",  cortexa15,7A, FL_LDSCHED, 9e) ARM_CORE("cortex-r4",  cortexr4,7R, FL_LDSCHED, 9e) ARM_CORE("cortex-r4f",  cortexr4f,7R, FL_LDSCHED, 9e) ARM_CORE("cortex-m4",  cortexm4,7EM, FL_LDSCHED, 9e)Index: gcc/config/arm/arm-tune.md===================================================================--- gcc/config/arm/arm-tune.md(revision 164080)+++ gcc/config/arm/arm-tune.md(working copy)@@ -1,5 +1,5 @@ ;; -*- buffer-read-only: t -*- ;; Generated automatically by gentune.sh from arm-cores.def (define_attr "tune"-"arm2,arm250,arm3,arm6,arm60,arm600,arm610,arm620,arm7,arm7d,arm7di,arm70,arm700,arm700i,arm710,arm720,arm710c,arm7100,arm7500,arm7500fe,arm7m,arm7dm,arm7dmi,arm8,arm810,strongarm,strongarm110,strongarm1100,strongarm1110,arm7tdmi,arm7tdmis,arm710t,arm720t,arm740t,arm9,arm9tdmi,arm920,arm920t,arm922t,arm940t,ep9312,arm10tdmi,arm1020t,arm9e,arm946es,arm966es,arm968es,arm10e,arm1020e,arm1022e,xscale,iwmmxt,iwmmxt2,arm926ejs,arm1026ejs,arm1136js,arm1136jfs,arm1176jzs,arm1176jzfs,mpcorenovfp,mpcore,arm1156t2s,arm1156t2fs,cortexa5,cortexa8,cortexa9,cortexr4,cortexr4f,cortexm4,cortexm3,cortexm1,cortexm0"+"arm2,arm250,arm3,arm6,arm60,arm600,arm610,arm620,arm7,arm7d,arm7di,arm70,arm700,arm700i,arm710,arm720,arm710c,arm7100,arm7500,arm7500fe,arm7m,arm7dm,arm7dmi,arm8,arm810,strongarm,strongarm110,strongarm1100,strongarm1110,arm7tdmi,arm7tdmis,arm710t,arm720t,arm740t,arm9,arm9tdmi,arm920,arm920t,arm922t,arm940t,ep9312,arm10tdmi,arm1020t,arm9e,arm946es,arm966es,arm968es,arm10e,arm1020e,arm1022e,xscale,iwmmxt,iwmmxt2,arm926ejs,arm1026ejs,arm1136js,arm1136jfs,arm1176jzs,arm1176jzfs,mpcorenovfp,mpcore,arm1156t2s,arm1156t2fs,cortexa5,cortexa8,cortexa9,cortexa15,cortexr4,cortexr4f,cortexm4,cortexm3,cortexm1,cortexm0" (const (symbol_ref "((enum attr_tune) arm_tune)")))Index: gcc/config/arm/bpabi.h===================================================================--- gcc/config/arm/bpabi.h(revision 164080)+++ gcc/config/arm/bpabi.h(working copy)@@ -53,7 +53,7 @@  #define TARGET_FIX_V4BX_SPEC " %{mcpu=arm8|mcpu=arm810|mcpu=strongarm*|march=armv4:--fix-v4bx}" -#define BE8_LINK_SPEC " %{mbig-endian:%{march=armv7-a|mcpu=cortex-a5|mcpu=cortex-a8|mcpu=cortex-a9:%{!r:--be8}}}"+#define BE8_LINK_SPEC " %{mbig-endian:%{march=armv7-a|mcpu=cortex-a5|mcpu=cortex-a8|mcpu=cortex-a9|mcpu=cortex-a15:%{!r:--be8}}}"  /* Tell the assembler to build BPABI binaries.  */ #undef  SUBTARGET_EXTRA_ASM_SPECIndex: gcc/doc/invoke.texi===================================================================--- gcc/doc/invoke.texi(revision 164080)+++ gcc/doc/invoke.texi(working copy)@@ -10121,7 +10121,7 @@ assembly code.  Permissible names are: @ @samp{arm10e}, @samp{arm1020e}, @samp{arm1022e}, @samp{arm1136j-s}, @samp{arm1136jf-s}, @samp{mpcore}, @samp{mpcorenovfp}, @samp{arm1156t2-s}, @samp{arm1156t2f-s}, @samp{arm1176jz-s}, @samp{arm1176jzf-s},-@samp{cortex-a5}, @samp{cortex-a8}, @samp{cortex-a9},+@samp{cortex-a5}, @samp{cortex-a8}, @samp{cortex-a9}, @samp{cortex-a15}, @samp{cortex-r4}, @samp{cortex-r4f}, @samp{cortex-m4}, @samp{cortex-m3}, @samp{cortex-m1}, @samp{cortex-m0},

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