[opcodes, pk, sim, xcc] made jumps shorter and PC-relative

6 files changed, 13 insertions, 67 deletions

diff --git a/Makefile.in b/Makefile.in
index 5239d00..05e6dc4 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -91,7 +91,7 @@ COMPILE       := $(CC) -MMD -MP $(CFLAGS) \
 #  - LIBS    : Library flags (eg. -l)
 
 LD            := $(CC)
-LDFLAGS       := @LDFLAGS@
+LDFLAGS       := @LDFLAGS@ -nostartfiles -nostdlib
 LIBS          := @LIBS@
 LINK          := $(LD) $(LDFLAGS) -T $(src_dir)/pk/pk.ld
 
diff --git a/config.h.in b/config.h.in
index 0bb21e0..dce08f0 100644
--- a/config.h.in
+++ b/config.h.in
@@ -30,5 +30,11 @@
 /* Define if virtual memory support is enabled */
 #undef PK_ENABLE_VM
 
+/* Define if subproject MCPPBS_SPROJ_NORM is enabled */
+#undef SOFTFLOAT_ENABLED
+
+/* Define if subproject MCPPBS_SPROJ_NORM is enabled */
+#undef SOFTFLOAT_RISCV_ENABLED
+
 /* Define to 1 if you have the ANSI C header files. */
 #undef STDC_HEADERS
diff --git a/configure b/configure
index 35f548d..f1d154a 100755
--- a/configure
+++ b/configure
@@ -3909,7 +3909,7 @@ fi
 # Default compiler flags
 #-------------------------------------------------------------------------
 
-CFLAGS="-Wall -O3 -std=gnu99"
+CFLAGS="-Wall -Os -std=gnu99"
 
 
 #-------------------------------------------------------------------------
diff --git a/configure.ac b/configure.ac
index 33b3d09..45bbaae 100644
--- a/configure.ac
+++ b/configure.ac
@@ -71,7 +71,7 @@ AC_HEADER_STDC
 # Default compiler flags
 #-------------------------------------------------------------------------
 
-AC_SUBST([CFLAGS],  ["-Wall -O3 -std=gnu99"])
+AC_SUBST([CFLAGS],  ["-Wall -Os -std=gnu99"])
 
 #-------------------------------------------------------------------------
 # MCPPBS subproject list
diff --git a/pk/pk.ld b/pk/pk.ld
index 5dd3ce4..0ccf7ef 100644
--- a/pk/pk.ld
+++ b/pk/pk.ld
@@ -2,8 +2,7 @@ OUTPUT_ARCH( "mips:riscv" )
 
 ENTRY( __start )
 
-GROUP( -lc -lgloss -lgcc )
-
+GROUP( -lc -lgcc -lgloss )
 
 SECTIONS
 {
@@ -31,18 +30,6 @@ SECTIONS
     *(.gnu.linkonce.t.*)
   }
 
-  /* init: Code to execute before main (called by crt1.S) */
-  .init : 
-  {
-    KEEP( *(.init) )
-  }
-
-  /* fini: Code to execute after main (called by crt1.S) */
-  .fini : 
-  {
-    KEEP( *(.fini) )
-  }
-
   /* rodata: Read-only data */
   .rodata : 
   {
@@ -57,53 +44,6 @@ SECTIONS
   _etext = .;
 
   /*--------------------------------------------------------------------*/
-  /* Global constructor/destructor segement                             */
-  /*--------------------------------------------------------------------*/
-  /* The .ctors/.dtors sections are special sections which contain a
-     list of constructor/destructor function pointers. crtbegin.o
-     includes code in a .init section which goes through the .ctors list
-     and calls each constuctor. crtend.o includes code in a .fini
-     section which goes through the .dtors list and calls each
-     destructor. crtbegin.o includes a special null pointer in its own
-     .ctors/.dtors sections which acts as a start indicator for those
-     lists. crtend.o also includes a special null pointer in its own
-     .ctors/.dtors sections which acts as an end indictor. The linker
-     commands below are setup so that crtbegin.o's .ctors/.dtors
-     sections are always first and crtend.o's .ctors/.dtors sections are
-     always last. This is the only way the list of functions will have
-     the begin and end indicators in the right place. */
-
-  /* ctors : Array of global constructor function pointers */
-  .ctors :
-  {
-    KEEP( *crtbegin.o(.ctors) )
-    KEEP( *(EXCLUDE_FILE(*crtend.o) .ctors) )
-    KEEP( *(SORT(.ctors.*)) )
-    KEEP( *(.ctors) )
-  }
-
-  /* dtors : Array of global destructor function pointers */
-  .dtors :
-  {
-    KEEP( *crtbegin.o(.dtors) )
-    KEEP( *(EXCLUDE_FILE(*crtend.o) .dtors) )
-    KEEP( *(SORT(.dtors.*)) )
-    KEEP( *(.dtors) )
-  }
-
-  /*--------------------------------------------------------------------*/
-  /* Other misc gcc segments (this was in idt32.ld)                     */
-  /*--------------------------------------------------------------------*/
-  /* I am not quite sure about these sections but it seems they are for
-     C++ exception handling. I think .jcr is for "Java Class
-     Registration" but it seems to end up in C++ binaries as well. */
-
-  .eh_frame_hdr     : { *(.eh_frame_hdr)     }
-  .eh_frame         : { KEEP( *(.eh_frame) ) }
-  .gcc_except_table : { *(.gcc_except_table) }
-  .jcr              : { KEEP (*(.jcr))       } 
-
-  /*--------------------------------------------------------------------*/
   /* Initialized data segment                                           */
   /*--------------------------------------------------------------------*/
 
diff --git a/pk/riscv-opc.h b/pk/riscv-opc.h
index 042da63..864014f 100644
--- a/pk/riscv-opc.h
+++ b/pk/riscv-opc.h
@@ -225,8 +225,8 @@
 #define  MASK_SQRT_S_RM 0xfff067e0
 #define MATCH_CVTU_L_D_RM 0xd4006520
 #define  MASK_CVTU_L_D_RM 0xfff067e0
-#define MATCH_JAL 0xc8000000
-#define  MASK_JAL 0xf8000000
+#define MATCH_JAL 0xc2000000
+#define  MASK_JAL 0xfe000000
 #define MATCH_LWU 0xf0006000
 #define  MASK_LWU 0xfe007000
 #define MATCH_CVT_S_D_RM 0xd4000660
@@ -250,7 +250,7 @@
 #define MATCH_SLLW 0xee007040
 #define  MASK_SLLW 0xfe007fe0
 #define MATCH_J 0xc0000000
-#define  MASK_J 0xf8000000
+#define  MASK_J 0xfe000000
 #define MATCH_SLTI 0xe8002000
 #define  MASK_SLTI 0xfe007000
 #define MATCH_REMU 0xea0010e0