From f0f649c33c9363701979792c3fb9c783461ee49f Mon Sep 17 00:00:00 2001 From: James Bowman Date: Fri, 8 Jul 2016 22:11:30 +0000 Subject: [PATCH] FT32: apply unbias to references to RAM symbols. The FT32 binutils use a bias to distinguish between RAM and flash addresses. This fix adds an ASM_OUTPUT_SYMBOL_REF() that unbiases references to RAM symbols. Only references to RAM objects have the bias applied. Flash objects (that is, objects in ADDR SPACE 1) are not biased, so for these no bias should be applied. Likewise references in the gdb section need to use the biased address, so references in debug sections are not unbiased. gcc/ChangeLog: 2016-07-08 James Bowman * config/ft32/ft32.c (ft32_elf_encode_section_info): New function. * config/ft32/ft32.h (ASM_OUTPUT_SYMBOL_REF): New function. From-SVN: r238185 --- gcc/ChangeLog | 5 +++++ gcc/config/ft32/ft32.c | 43 ++++++++++++++++++++++++++++++++++++++++++ gcc/config/ft32/ft32.h | 10 ++++++++++ 3 files changed, 58 insertions(+) diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 9cdfd1a86e9..7dd0db561c2 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2016-07-08 James Bowman + + * config/ft32/ft32.c (ft32_elf_encode_section_info): New function. + * config/ft32/ft32.h (ASM_OUTPUT_SYMBOL_REF): New function. + 2016-07-08 Vladimir Makarov PR rtl-optimization/71621 diff --git a/gcc/config/ft32/ft32.c b/gcc/config/ft32/ft32.c index 26e5a92195a..216a8040428 100644 --- a/gcc/config/ft32/ft32.c +++ b/gcc/config/ft32/ft32.c @@ -35,6 +35,7 @@ #include "calls.h" #include "expr.h" #include "builtins.h" +#include "print-tree.h" /* This file should be included last. */ #include "target-def.h" @@ -895,6 +896,48 @@ yes: return 1; } +#undef TARGET_ENCODE_SECTION_INFO +#define TARGET_ENCODE_SECTION_INFO ft32_elf_encode_section_info + +void +ft32_elf_encode_section_info (tree decl, rtx rtl, int first) +{ + enum tree_code code; + rtx symbol; + + /* Careful not to prod global register variables. */ + if (!MEM_P (rtl)) + return; + symbol = XEXP (rtl, 0); + if (GET_CODE (symbol) != SYMBOL_REF) + return; + + default_encode_section_info (decl, rtl, first); + + code = TREE_CODE (decl); + switch (TREE_CODE_CLASS (code)) + { + case tcc_declaration: + { + tree type = TREE_TYPE (decl); + int is_flash = (type && TYPE_P (type) + && !ADDR_SPACE_GENERIC_P (TYPE_ADDR_SPACE (type))); + if ((code == VAR_DECL) && !is_flash) + SYMBOL_REF_FLAGS (symbol) |= 0x1000; + } + break; + + case tcc_constant: + case tcc_exceptional: + if (code == STRING_CST) + SYMBOL_REF_FLAGS (symbol) |= 0x1000; + break; + + default: + break; + } +} + struct gcc_target targetm = TARGET_INITIALIZER; #include "gt-ft32.h" diff --git a/gcc/config/ft32/ft32.h b/gcc/config/ft32/ft32.h index 7c3a678b9a7..dd40b1de0b6 100644 --- a/gcc/config/ft32/ft32.h +++ b/gcc/config/ft32/ft32.h @@ -506,4 +506,14 @@ do { \ extern int ft32_is_mem_pm(rtx o); +#define ASM_OUTPUT_SYMBOL_REF(stream, sym) \ + do { \ + assemble_name (stream, XSTR (sym, 0)); \ + int section_debug = in_section && \ + (SECTION_STYLE (in_section) == SECTION_NAMED) && \ + (in_section->named.common.flags & SECTION_DEBUG); \ + if (!section_debug && SYMBOL_REF_FLAGS (sym) & 0x1000) \ + asm_fprintf (stream, "-0x800000"); \ + } while (0) + #endif /* GCC_FT32_H */ -- 2.30.2