linux-user: Move elf_core_copy_regs to mips/elfload.c

Move elf_core_copy_regs to elfload.c.
Move HAVE_ELF_CORE_DUMP, ELF_NREGS, target_elf_gregset_t to target_elf.h.
For now, duplicate the definitions of target_elf_greg_t and tswapreg.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

1 files changed, 46 insertions, 0 deletions

diff --git a/linux-user/mips/elfload.c b/linux-user/mips/elfload.c
index c353ccc1ad..6e884911af 100644
--- a/linux-user/mips/elfload.c
+++ b/linux-user/mips/elfload.c
@@ -4,6 +4,7 @@
 #include "qemu.h"
 #include "loader.h"
 #include "elf.h"
+#include "target_elf.h"
 
 
 const char *get_elf_cpu_model(uint32_t eflags)
@@ -122,3 +123,48 @@ const char *get_elf_base_platform(CPUState *cs)
 }
 
 #undef MATCH_PLATFORM_INSN
+
+#ifdef TARGET_ABI_MIPSN32
+#define tswapreg(ptr)   tswap64(ptr)
+#else
+#define tswapreg(ptr)   tswapal(ptr)
+#endif
+
+/* See linux kernel: arch/mips/include/asm/reg.h.  */
+enum {
+#ifdef TARGET_MIPS64
+    TARGET_EF_R0 = 0,
+#else
+    TARGET_EF_R0 = 6,
+#endif
+    TARGET_EF_R26 = TARGET_EF_R0 + 26,
+    TARGET_EF_R27 = TARGET_EF_R0 + 27,
+    TARGET_EF_LO = TARGET_EF_R0 + 32,
+    TARGET_EF_HI = TARGET_EF_R0 + 33,
+    TARGET_EF_CP0_EPC = TARGET_EF_R0 + 34,
+    TARGET_EF_CP0_BADVADDR = TARGET_EF_R0 + 35,
+    TARGET_EF_CP0_STATUS = TARGET_EF_R0 + 36,
+    TARGET_EF_CP0_CAUSE = TARGET_EF_R0 + 37
+};
+
+/* See linux kernel: arch/mips/kernel/process.c:elf_dump_regs.  */
+void elf_core_copy_regs(target_elf_gregset_t *r, const CPUMIPSState *env)
+{
+    int i;
+
+    for (i = 0; i <= TARGET_EF_R0; i++) {
+        r->regs[i] = 0;
+    }
+    for (i = 1; i < ARRAY_SIZE(env->active_tc.gpr); i++) {
+        r->regs[TARGET_EF_R0 + i] = tswapreg(env->active_tc.gpr[i]);
+    }
+
+    r->regs[TARGET_EF_R26] = 0;
+    r->regs[TARGET_EF_R27] = 0;
+    r->regs[TARGET_EF_LO] = tswapreg(env->active_tc.LO[0]);
+    r->regs[TARGET_EF_HI] = tswapreg(env->active_tc.HI[0]);
+    r->regs[TARGET_EF_CP0_EPC] = tswapreg(env->active_tc.PC);
+    r->regs[TARGET_EF_CP0_BADVADDR] = tswapreg(env->CP0_BadVAddr);
+    r->regs[TARGET_EF_CP0_STATUS] = tswapreg(env->CP0_Status);
+    r->regs[TARGET_EF_CP0_CAUSE] = tswapreg(env->CP0_Cause);
+}