Merge remote-tracking branch 'remotes/amarkovic/tags/mips-queue-jan-29-2020' into staging

MIPS queue for January 29th, 2020

# gpg: Signature made Wed 29 Jan 2020 18:29:43 GMT
# gpg:                using RSA key D4972A8967F75A65
# gpg: Good signature from "Aleksandar Markovic <amarkovic@wavecomp.com>" [full]
# Primary key fingerprint: 8526 FBF1 5DA3 811F 4A01  DD75 D497 2A89 67F7 5A65

* remotes/amarkovic/tags/mips-queue-jan-29-2020:
  target/mips: Add implementation of GINVT instruction
  target/mips: Amend CP0 WatchHi register implementation
  hw/core/loader: Let load_elf() populate a field with CPU-specific flags
  target/mips: semihosting: Remove 'uhi_done' label in helper_do_semihosting()
  disas: Add a field for target-dependant data to disassemble_info
  target/mips: Rectify documentation on deprecating MIPS r4k machine

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

3 files changed, 20 insertions, 10 deletions

diff --git a/include/disas/dis-asm.h b/include/disas/dis-asm.h
index e9c7dd8..f87f468 100644
--- a/include/disas/dis-asm.h
+++ b/include/disas/dis-asm.h
@@ -372,6 +372,9 @@ typedef struct disassemble_info {
   /* Command line options specific to the target disassembler.  */
   char * disassembler_options;
 
+  /* Field intended to be used by targets in any way they deem suitable.  */
+  int64_t target_info;
+
   /* Options for Capstone disassembly.  */
   int cap_arch;
   int cap_mode;
diff --git a/include/hw/elf_ops.h b/include/hw/elf_ops.h
index e07d276..a1411bf 100644
--- a/include/hw/elf_ops.h
+++ b/include/hw/elf_ops.h
@@ -316,7 +316,8 @@ static int glue(load_elf, SZ)(const char *name, int fd,
                               void *translate_opaque,
                               int must_swab, uint64_t *pentry,
                               uint64_t *lowaddr, uint64_t *highaddr,
-                              int elf_machine, int clear_lsb, int data_swab,
+                              uint32_t *pflags, int elf_machine,
+                              int clear_lsb, int data_swab,
                               AddressSpace *as, bool load_rom,
                               symbol_fn_t sym_cb)
 {
@@ -389,6 +390,9 @@ static int glue(load_elf, SZ)(const char *name, int fd,
             }
     }
 
+    if (pflags) {
+        *pflags = (elf_word)ehdr.e_flags;
+    }
     if (pentry)
         *pentry = (uint64_t)(elf_sword)ehdr.e_entry;
 
diff --git a/include/hw/loader.h b/include/hw/loader.h
index 48a96cd..a9eeea3 100644
--- a/include/hw/loader.h
+++ b/include/hw/loader.h
@@ -101,6 +101,7 @@ const char *load_elf_strerror(int error);
  * @pentry: Populated with program entry point. Ignored if NULL.
  * @lowaddr: Populated with lowest loaded address. Ignored if NULL.
  * @highaddr: Populated with highest loaded address. Ignored if NULL.
+ * @pflags: Populated with ELF processor-specific flags. Ignore if NULL.
  * @bigendian: Expected ELF endianness. 0 for LE otherwise BE
  * @elf_machine: Expected ELF machine type
  * @clear_lsb: Set to mask off LSB of addresses (Some architectures use
@@ -131,8 +132,9 @@ int load_elf_ram_sym(const char *filename,
                      uint64_t (*elf_note_fn)(void *, void *, bool),
                      uint64_t (*translate_fn)(void *, uint64_t),
                      void *translate_opaque, uint64_t *pentry,
-                     uint64_t *lowaddr, uint64_t *highaddr, int big_endian,
-                     int elf_machine, int clear_lsb, int data_swab,
+                     uint64_t *lowaddr, uint64_t *highaddr, uint32_t *pflags,
+                     int big_endian, int elf_machine,
+                     int clear_lsb, int data_swab,
                      AddressSpace *as, bool load_rom, symbol_fn_t sym_cb);
 
 /** load_elf_ram:
@@ -143,9 +145,9 @@ int load_elf_ram(const char *filename,
                  uint64_t (*elf_note_fn)(void *, void *, bool),
                  uint64_t (*translate_fn)(void *, uint64_t),
                  void *translate_opaque, uint64_t *pentry, uint64_t *lowaddr,
-                 uint64_t *highaddr, int big_endian, int elf_machine,
-                 int clear_lsb, int data_swab, AddressSpace *as,
-                 bool load_rom);
+                 uint64_t *highaddr, uint32_t *pflags, int big_endian,
+                 int elf_machine, int clear_lsb, int data_swab,
+                 AddressSpace *as, bool load_rom);
 
 /** load_elf_as:
  * Same as load_elf_ram(), but always loads the elf as ROM
@@ -154,8 +156,9 @@ int load_elf_as(const char *filename,
                 uint64_t (*elf_note_fn)(void *, void *, bool),
                 uint64_t (*translate_fn)(void *, uint64_t),
                 void *translate_opaque, uint64_t *pentry, uint64_t *lowaddr,
-                uint64_t *highaddr, int big_endian, int elf_machine,
-                int clear_lsb, int data_swab, AddressSpace *as);
+                uint64_t *highaddr, uint32_t *pflags, int big_endian,
+                int elf_machine, int clear_lsb, int data_swab,
+                AddressSpace *as);
 
 /** load_elf:
  * Same as load_elf_as(), but doesn't allow the caller to specify an
@@ -165,8 +168,8 @@ int load_elf(const char *filename,
              uint64_t (*elf_note_fn)(void *, void *, bool),
              uint64_t (*translate_fn)(void *, uint64_t),
              void *translate_opaque, uint64_t *pentry, uint64_t *lowaddr,
-             uint64_t *highaddr, int big_endian, int elf_machine,
-             int clear_lsb, int data_swab);
+             uint64_t *highaddr, uint32_t *pflags, int big_endian,
+             int elf_machine, int clear_lsb, int data_swab);
 
 /** load_elf_hdr:
  * @filename: Path of ELF file