[1/2] musl: Update to latest

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
deleted file mode 100644
index a9abb18726..0000000000
--- a/meta/recipes-core/musl/musl/0001-Change-container-for-riscv-floating-point-state-to-_.patch
+++ /dev/null
@@ -1,67 +0,0 @@ 
-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/0001-correct-the-operand-specifiers-in-the-riscv64-CAS-ro.patch b/meta/recipes-core/musl/musl/0001-correct-the-operand-specifiers-in-the-riscv64-CAS-ro.patch
deleted file mode 100644
index 09b71cb299..0000000000
--- a/meta/recipes-core/musl/musl/0001-correct-the-operand-specifiers-in-the-riscv64-CAS-ro.patch
+++ /dev/null
@@ -1,55 +0,0 @@ 
-From 59f2954fcaacd9426827c69a729e2647cb9977e5 Mon Sep 17 00:00:00 2001
-From: Palmer Dabbelt <palmer@sifive.com>
-Date: Tue, 24 Sep 2019 20:30:15 -0700
-Subject: [PATCH] correct the operand specifiers in the riscv64 CAS routines
-
-The operand sepcifiers in a_cas and a_casp for riscv64 were incorrect:
-there's a backwards branch in the routine, so despite tmp being written
-at the end of the assembly fragment it cannot be allocated in one of the
-input registers because the input values may be needed for another trip
-around the loop.
-
-For code that follows the guarnteed forward progress requirements, he
-backwards branch is rarely taken: SiFive's hardware only fails a store
-conditional on execptional cases (ie, instruction cache misses inside
-the loop), and until recently a bug in QEMU allowed back-to-back
-store conditionals to succeed.  The bug has been fixed in the latest
-QEMU release, but it turns out that the fix caused this latent bug in
-musl to manifest.
-
-Full disclosure: I haven't actually even compiled musl.  I just guessed
-this would fix a bug introducted by the new QEMU behavior, Alistair
-(CC'd) actually checked it fixes the problem.  The rest is just
-conjecture.
-
-Upstream-Status: Submitted
-Signed-off-by: Khem Raj <raj.khem@gmail.com>
----
- arch/riscv64/atomic_arch.h | 4 ++--
- 1 file changed, 2 insertions(+), 2 deletions(-)
-
-diff --git a/arch/riscv64/atomic_arch.h b/arch/riscv64/atomic_arch.h
-index c9765342..41ad4d04 100644
---- a/arch/riscv64/atomic_arch.h
-+++ b/arch/riscv64/atomic_arch.h
-@@ -14,7 +14,7 @@ static inline int a_cas(volatile int *p, int t, int s)
- 		"	sc.w.aqrl %1, %4, (%2)\n"
- 		"	bnez %1, 1b\n"
- 		"1:"
--		: "=&r"(old), "=r"(tmp)
-+		: "=&r"(old), "=&r"(tmp)
- 		: "r"(p), "r"(t), "r"(s)
- 		: "memory");
- 	return old;
-@@ -31,7 +31,7 @@ static inline void *a_cas_p(volatile void *p, void *t, void *s)
- 		"	sc.d.aqrl %1, %4, (%2)\n"
- 		"	bnez %1, 1b\n"
- 		"1:"
--		: "=&r"(old), "=r"(tmp)
-+		: "=&r"(old), "=&r"(tmp)
- 		: "r"(p), "r"(t), "r"(s)
- 		: "memory");
- 	return old;
--- 
-2.23.0
-
diff --git a/meta/recipes-core/musl/musl/0001-riscv-Define-sigcontext-again.patch b/meta/recipes-core/musl/musl/0001-riscv-Define-sigcontext-again.patch
new file mode 100644
index 0000000000..fcb324e15f
--- /dev/null
+++ b/meta/recipes-core/musl/musl/0001-riscv-Define-sigcontext-again.patch
@@ -0,0 +1,48 @@ 
+commit a0993f8f0f161423ecdcb754f282ffd2fe47a7b5
+Author: Rich Felker <dalias@aerifal.cx>
+Date:   Wed Oct 2 09:28:03 2019 -0400
+
+    reintroduce riscv64 struct sigcontext
+    
+    commit ab3eb89a8b83353cdaab12ed017a67a7730f90e9 removed it as part of
+    correcting the mcontext_t definition, but there is still code using
+    struct sigcontext and expecting the member names present in it, most
+    notably libgcc_eh. almost all such usage is incorrect, but bring back
+    struct sigcontext at least for now so as not to introduce regressions.
+
+Upstream-Status: Pending
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+diff --git a/arch/riscv64/bits/signal.h b/arch/riscv64/bits/signal.h
+index 03fe48c1..2ff4be30 100644
+--- a/arch/riscv64/bits/signal.h
++++ b/arch/riscv64/bits/signal.h
+@@ -6,12 +6,6 @@
+ # define SIGSTKSZ 8192
+ #endif
+ 
+-#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
+-typedef unsigned long greg_t;
+-typedef unsigned long gregset_t[32];
+-typedef union __riscv_mc_fp_state fpregset_t;
+-#endif
+-
+ typedef unsigned long __riscv_mc_gp_state[32];
+ 
+ struct __riscv_mc_f_ext_state {
+@@ -41,6 +35,16 @@ typedef struct mcontext_t {
+ 	union __riscv_mc_fp_state __fpregs;
+ } mcontext_t;
+ 
++#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
++typedef unsigned long greg_t;
++typedef unsigned long gregset_t[32];
++typedef union __riscv_mc_fp_state fpregset_t;
++struct sigcontext {
++	gregset_t gregs;
++	fpregset_t fpregs;
++};
++#endif
++
+ struct sigaltstack {
+ 	void *ss_sp;
+ 	int ss_flags;
diff --git a/meta/recipes-core/musl/musl_git.bb b/meta/recipes-core/musl/musl_git.bb
index 13fd17353d..aacff79f7c 100644
--- a/meta/recipes-core/musl/musl_git.bb
+++ b/meta/recipes-core/musl/musl_git.bb
@@ -4,7 +4,7 @@ 
 require musl.inc
 inherit linuxloader
 
-SRCREV = "1f0e9f9cc2e3fa354f94e18b3b362de5f1ec7272"
+SRCREV = "2c2477da9a553c0b9b2fa18073a5dcdbe6d395af"
 
 BASEVER = "1.1.23"
 
@@ -15,8 +15,7 @@  PV = "${BASEVER}+git${SRCPV}"
 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 \
+           file://0001-riscv-Define-sigcontext-again.patch \
           "
 
 S = "${WORKDIR}/git"