[PATCH 3/5] linux-user/hppa: write the floating-point registers to a core dump

[Matt Turner <mattst88@gmail.com>]

Write an NT_FPREGSET note for HPPA, matching the kernel's
elf_fpregset_t layout (ELF_NFPREG = 32): fr0-fr31 as 64-bit values.

Signed-off-by: Matt Turner <mattst88@gmail.com>
---
 linux-user/hppa/elfload.c    | 7 +++++++
 linux-user/hppa/target_elf.h | 9 +++++++++
 2 files changed, 16 insertions(+)

diff --git ./linux-user/hppa/elfload.c ./linux-user/hppa/elfload.c
index ff4301b2ed..dd5b0b380e 100644
--- ./linux-user/hppa/elfload.c
+++ ./linux-user/hppa/elfload.c
@@ -17,6 +17,13 @@ const char *get_elf_platform(CPUState *cs)
     return "PARISC";
 }
 
+void elf_core_copy_fpregs(target_elf_fpregset_t *r, const CPUArchState *env)
+{
+    for (int i = 0; i < 32; i++) {
+        r->fpr[i] = tswap64(env->fr[i]);
+    }
+}
+
 void elf_core_copy_regs(target_elf_gregset_t *r, const CPUArchState *env)
 {
     int i;
diff --git ./linux-user/hppa/target_elf.h ./linux-user/hppa/target_elf.h
index 22547b1437..4357873aff 100644
--- ./linux-user/hppa/target_elf.h
+++ ./linux-user/hppa/target_elf.h
@@ -39,4 +39,13 @@ typedef struct target_elf_gregset_t {
 #define STACK_ALIGNMENT         64
 #define VDSO_HEADER             "vdso.c.inc"
 
+#define HAVE_ELF_CORE_FPREGS    1
+
+/*
+ * Matches the kernel's elf_fpregset_t (ELF_NFPREG = 32): fr0-fr31.
+ */
+typedef struct target_elf_fpregset_t {
+    uint64_t fpr[32];
+} target_elf_fpregset_t;
+
 #endif
-- 
2.54.0