[PATCH 5/5] linux-user/sh4: write the floating-point registers to a core dump

Write an NT_FPREGSET note for SH4, matching struct user_fpu_struct
from arch/sh/include/asm/user.h: fr0-fr15, xf0-xf15, fpscr, fpul.

Signed-off-by: Matt Turner <[email protected]>
---
 linux-user/sh4/elfload.c    | 10 ++++++++++
 linux-user/sh4/target_elf.h | 12 ++++++++++++
 2 files changed, 22 insertions(+)

diff --git ./linux-user/sh4/elfload.c ./linux-user/sh4/elfload.c
index f03ce49e7d..41601626ca 100644
--- ./linux-user/sh4/elfload.c
+++ ./linux-user/sh4/elfload.c
@@ -52,6 +52,16 @@ abi_ulong get_elf_hwcap(CPUState *cs)
     return hwcap;
 }
 
+void elf_core_copy_fpregs(target_elf_fpregset_t *r, const CPUSH4State *env)
+{
+    for (int i = 0; i < 16; i++) {
+        r->fpregs[i] = tswap32(env->fregs[i]);
+        r->xfpregs[i] = tswap32(env->fregs[16 + i]);
+    }
+    r->fpscr = tswap32(env->fpscr);
+    r->fpul = tswap32(env->fpul);
+}
+
 void elf_core_copy_regs(target_elf_gregset_t *r, const CPUSH4State *env)
 {
     for (int i = 0; i < 16; i++) {
diff --git ./linux-user/sh4/target_elf.h ./linux-user/sh4/target_elf.h
index 3fcb63d409..5923022036 100644
--- ./linux-user/sh4/target_elf.h
+++ ./linux-user/sh4/target_elf.h
@@ -25,4 +25,16 @@ typedef struct target_elf_gregset_t {
     struct target_pt_regs pt;
 } target_elf_gregset_t;
 
+#define HAVE_ELF_CORE_FPREGS    1
+
+/*
+ * Matches struct user_fpu_struct from arch/sh/include/asm/user.h.
+ */
+typedef struct target_elf_fpregset_t {
+    uint32_t fpregs[16];
+    uint32_t xfpregs[16];
+    uint32_t fpscr;
+    uint32_t fpul;
+} target_elf_fpregset_t;
+
 #endif
-- 
2.54.0