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[PATCH 03/17] Add support for the RISC-V-specific ELF flags
- From: Palmer Dabbelt <palmer at dabbelt dot com>
- To: libc-alpha at sourceware dot org, joseph at codesourcery dot com
- Cc: Andrew Waterman <andrew at sifive dot com>, Darius Rad <darius at bluespec dot com>, dj at redhat dot com, patches at groups dot riscv dot org, Palmer Dabbelt <palmer at dabbelt dot com>
- Date: Wed, 24 Jan 2018 20:36:07 -0800
- Subject: [PATCH 03/17] Add support for the RISC-V-specific ELF flags
- Authentication-results: sourceware.org; auth=none
- References: <20180125043621.19972-1-palmer@dabbelt.com>
The RISC-V port defines ELF flags that enforce compatibility between
various objects. This adds the shared support necessary for these
flags.
2018-01-13 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.
---
elf/cache.c | 6 ++++++
elf/elf.h | 8 ++++++++
sysdeps/generic/ldconfig.h | 2 ++
3 files changed, 16 insertions(+)
diff --git a/elf/cache.c b/elf/cache.c
index 1ec6ab36e7f7..c2c010f97bb2 100644
--- a/elf/cache.c
+++ b/elf/cache.c
@@ -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:
diff --git a/elf/elf.h b/elf/elf.h
index 66af3dc0ea61..954f3266f711 100644
--- a/elf/elf.h
+++ b/elf/elf.h
@@ -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
diff --git a/sysdeps/generic/ldconfig.h b/sysdeps/generic/ldconfig.h
index 74eb92e528d5..59e20dc3ef79 100644
--- a/sysdeps/generic/ldconfig.h
+++ b/sysdeps/generic/ldconfig.h
@@ -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"
--
2.13.6