musl: Fix __riscv_mc* containers to match glibc

Fixes packages like gdb compile

(From OE-Core rev: 6792307a41c71786841f8fa6224af81be201688e)

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

2 files changed, 68 insertions, 0 deletions

diff --git a/meta/recipes-core/musl/musl/0001-Change-container-for-riscv-floating-point-state-to-_.patch b/meta/recipes-core/musl/musl/0001-Change-container-for-riscv-floating-point-state-to-_.patch
new file mode 100644
index 0000000000..a9abb18726
--- /dev/null
+++ b/meta/recipes-core/musl/musl/0001-Change-container-for-riscv-floating-point-state-to-_.patch
@@ -0,0 +1,67 @@
+From 52a37610650e7366a398dd07393d3902d2f3faa3 Mon Sep 17 00:00:00 2001
+From: Khem Raj <raj.khem@gmail.com>
+Date: Sat, 28 Sep 2019 12:19:57 -0700
+Subject: [PATCH] Change container for riscv floating-point state to __riscv_mc_fp_state
+
+Match the struct elements with glibc
+glibc also uses __riscv_mc prefix, some packages like gdb uses that
+
+Upstream-Status: Submitted [https://www.openwall.com/lists/musl/2019/09/28/1]
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+---
+ arch/riscv64/bits/signal.h | 18 +++++++++---------
+ arch/riscv64/bits/user.h   |  2 +-
+ 2 files changed, 10 insertions(+), 10 deletions(-)
+
+diff --git a/arch/riscv64/bits/signal.h b/arch/riscv64/bits/signal.h
+index 76d7ad80..aba7ab00 100644
+--- a/arch/riscv64/bits/signal.h
++++ b/arch/riscv64/bits/signal.h
+@@ -13,25 +13,25 @@ typedef unsigned long greg_t;
+ typedef unsigned long gregset_t[32];
+ 
+ struct __riscv_mc_f_ext_state {
+-       unsigned int f[32];
+-       unsigned int fcsr;
++       unsigned int __f[32];
++       unsigned int __fcsr;
+ };
+ 
+ struct __riscv_mc_d_ext_state {
+-       unsigned long long f[32];
+-       unsigned int fcsr;
++       unsigned long long __f[32];
++       unsigned int __fcsr;
+ };
+ 
+ struct __riscv_mc_q_ext_state {
+-       unsigned long long f[64] __attribute__((aligned(16)));
+-       unsigned int fcsr;
++       unsigned long long __f[64] __attribute__((aligned(16)));
++       unsigned int __fcsr;
+        unsigned int reserved[3];
+ };
+ 
+ union __riscv_mc_fp_state {
+-       struct __riscv_mc_f_ext_state f;
+-       struct __riscv_mc_d_ext_state d;
+-       struct __riscv_mc_q_ext_state q;
++       struct __riscv_mc_f_ext_state __f;
++       struct __riscv_mc_d_ext_state __d;
++       struct __riscv_mc_q_ext_state __q;
+ };
+ 
+ typedef union __riscv_mc_fp_state fpregset_t;
+diff --git a/arch/riscv64/bits/user.h b/arch/riscv64/bits/user.h
+index d2e383b2..9918a2fe 100644
+--- a/arch/riscv64/bits/user.h
++++ b/arch/riscv64/bits/user.h
+@@ -5,4 +5,4 @@ struct user_fpregs_struct {
+ 
+ #define ELF_NGREG 32
+ typedef unsigned long elf_greg_t, elf_gregset_t[ELF_NGREG];
+-typedef struct user_fpregs_struct elf_fpregset_t;
++typedef union __riscv_mc_fp_state elf_fpregset_t;
+-- 
+2.23.0
+
diff --git a/meta/recipes-core/musl/musl_git.bb b/meta/recipes-core/musl/musl_git.bb
index 335d53d42f..13fd17353d 100644
--- a/meta/recipes-core/musl/musl_git.bb
+++ b/meta/recipes-core/musl/musl_git.bb
@@ -16,6 +16,7 @@ SRC_URI = "git://git.musl-libc.org/musl \
            file://0001-Make-dynamic-linker-a-relative-symlink-to-libc.patch \
            file://0002-ldso-Use-syslibdir-and-libdir-as-default-pathes-to-l.patch \
            file://0001-correct-the-operand-specifiers-in-the-riscv64-CAS-ro.patch \
+           file://0001-Change-container-for-riscv-floating-point-state-to-_.patch \
           "
 
 S = "${WORKDIR}/git"