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Add support for the RISC-V-specific ELF flags

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The RISC-V port defines ELF flags that enforce compatibility between
various objects.  This adds the shared support necessary for these
flags.

2018-01-25  Palmer Dabbelt  <palmer@sifive.com>

        * elf/cache.c (print_entry): Add FLAG_RISCV_FLOAT_ABI_SOFT and
        FLAG_RISCV_FLOAT_ABI_DOUBLE.
        * elf/elf.h (EF_RISCV_RVC): New define.
        (EF_RISCV_FLOAT_ABI): Likewise.
        (EF_RISCV_FLOAT_ABI_SOFT): Likewise.
        (EF_RISCV_FLOAT_ABI_SINGLE): Likewise.
        (EF_RISCV_FLOAT_ABI_DOUBLE): Likewise.
        (EF_RISCV_FLOAT_ABI_QUAD): Likewise.
        * sysdeps/generic/ldconfig.h (FLAG_RISCV_FLOAT_ABI_SOFT): New
        define.
        (FLAG_RISCV_FLOAT_ABI_DOUBLE): Likewise.
This commit is contained in:
Palmer Dabbelt 2018-01-13 01:59:12 -08:00
parent 128c43a2d6
commit fb58aac5fe
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GPG Key ID: EF4CA1502CCBAB41
4 changed files with 30 additions and 0 deletions
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14
ChangeLog
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@ -1,3 +1,17 @@
2018-01-25 Palmer Dabbelt <palmer@sifive.com>
* elf/cache.c (print_entry): Add FLAG_RISCV_FLOAT_ABI_SOFT and
FLAG_RISCV_FLOAT_ABI_DOUBLE.
* elf/elf.h (EF_RISCV_RVC): New define.
(EF_RISCV_FLOAT_ABI): Likewise.
(EF_RISCV_FLOAT_ABI_SOFT): Likewise.
(EF_RISCV_FLOAT_ABI_SINGLE): Likewise.
(EF_RISCV_FLOAT_ABI_DOUBLE): Likewise.
(EF_RISCV_FLOAT_ABI_QUAD): Likewise.
* sysdeps/generic/ldconfig.h (FLAG_RISCV_FLOAT_ABI_SOFT): New
define.
(FLAG_RISCV_FLOAT_ABI_DOUBLE): Likewise.
2018-01-25 Andreas Schwab <schwab@suse.de>
* aclocal.m4 (LIBC_SLIBDIR_RTLDDIR): Consistently put arguments in

6
elf/cache.c
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@ -114,6 +114,12 @@ print_entry (const char *lib, int flag, unsigned int osversion,
case FLAG_MIPS64_LIBN64_NAN2008:
fputs (",64bit,nan2008", stdout);
break;
case FLAG_RISCV_FLOAT_ABI_SOFT:
fputs (",soft-float", stdout);
break;
case FLAG_RISCV_FLOAT_ABI_DOUBLE:
fputs (",double-float", stdout);
break;
case 0:
break;
default:

8
elf/elf.h
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@ -3766,6 +3766,14 @@ enum
#define R_TILEGX_NUM 130
/* RISC-V ELF Flags */
#define EF_RISCV_RVC 0x0001
#define EF_RISCV_FLOAT_ABI 0x0006
#define EF_RISCV_FLOAT_ABI_SOFT 0x0000
#define EF_RISCV_FLOAT_ABI_SINGLE 0x0002
#define EF_RISCV_FLOAT_ABI_DOUBLE 0x0004
#define EF_RISCV_FLOAT_ABI_QUAD 0x0006
/* RISC-V relocations. */
#define R_RISCV_NONE 0
#define R_RISCV_32 1

2
sysdeps/generic/ldconfig.h
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@ -42,6 +42,8 @@
#define FLAG_MIPS_LIB32_NAN2008 0x0c00
#define FLAG_MIPS64_LIBN32_NAN2008 0x0d00
#define FLAG_MIPS64_LIBN64_NAN2008 0x0e00
#define FLAG_RISCV_FLOAT_ABI_SOFT 0x0f00
#define FLAG_RISCV_FLOAT_ABI_DOUBLE 0x1000
/* Name of auxiliary cache. */
#define _PATH_LDCONFIG_AUX_CACHE "/var/cache/ldconfig/aux-cache"