Changeset 0acb7d0 in buchla-68k

Timestamp:

07/20/2017 04:15:24 PM (7 years ago)

Author:

Thomas Lopatic <thomas@…>

Branches:

master

Children:

cd1d0db

Parents:

7913d06

Message:

Generate bios.abs.

Files:

• Makefile (modified) (2 diffs)
• misc/mkhd.sh (modified) (3 diffs)
• misc/ram.ld (modified) (1 diff)
• misc/rom.ld (modified) (1 diff)

Makefile

@@ -25 +25 @@
 HEADERS :=              $(wildcard include/*.h)
 
-all:                    bios.img midas.abs
+all:                    bios.abs midas.abs
 
 PROLOG_C :=             croot.c
@@ -166 +166 @@
 build/%.o:              rom/%.s $(HEADERS) | build
                                 $(CROSS_GCC) $(FLAGS_ASM) -c -o $@ $<
+
+bios.abs:               bios.elf bios.img
+                                misc/mkhd.sh $(CROSS_NM) bios.elf >/tmp/bios.hdr
+                                cat /tmp/bios.hdr bios.img >bios.abs
+                                rm /tmp/bios.hdr
 
 bios.img:               bios.elf

misc/mkhd.sh

@@ -31 +31 @@
 echo >&2
 
-getsym _Lo_RAM; SYM_LO_RAM=${RET}
-getsym _etext;  SYM_ETEXT=${RET}
-getsym _edata;  SYM_EDATA=${RET}
-getsym _end;    SYM_END=${RET}
+getsym _stext; SYM_STEXT=${RET}
+getsym _etext; SYM_ETEXT=${RET}
+getsym _sdata; SYM_SDATA=${RET}
+getsym _edata; SYM_EDATA=${RET}
+getsym _sbss;  SYM_SBSS=${RET}
+getsym _ebss;  SYM_EBSS=${RET}
 
 echo >&2
 
-LEN_TEXT=$((${SYM_ETEXT} - ${SYM_LO_RAM}))
-LEN_DATA=$((${SYM_EDATA} - ${SYM_ETEXT}))
-LEN_BSS=$((${SYM_END} - ${SYM_EDATA}))
+LEN_TEXT=$((${SYM_SDATA} - ${SYM_STEXT}))
+LEN_DATA=$((${SYM_EDATA} - ${SYM_SDATA}))
+LEN_IMAG=$((${LEN_TEXT} + ${LEN_DATA}))
+LEN_BSS=$((${SYM_EBSS} - ${SYM_SBSS}))
+
+printf '  sz_text  0x%08x  %6s\n' ${LEN_TEXT} ${LEN_TEXT} >&2
+printf '  sz_data  0x%08x  %6s\n' ${LEN_DATA} ${LEN_DATA} >&2
+printf '  sz_imag  0x%08x  %6s\n' ${LEN_IMAG} ${LEN_IMAG} >&2
+printf '   sz_bss  0x%08x  %6s\n' ${LEN_BSS}  ${LEN_BSS}  >&2
+
+echo >&2
 
 out8() {
@@ -64 +74 @@
 }
 
-out16 24602
+out16 24603
 out32 ${LEN_TEXT}
 out32 ${LEN_DATA}
@@ -70 +80 @@
 out32 0
 out32 0
-out32 ${SYM_LO_RAM}
+out32 ${SYM_STEXT}
 out16 65535
+out32 ${SYM_SDATA}
+out32 ${SYM_SBSS}

misc/ram.ld

@@ -3 +3 @@
 SECTIONS
 {
-    .text (0x10000) :
+    .text (0x10000):
     {
+        _stext = .;
         *(.text .text.*)
         *(.rodata .rodata.*)
-        _etext = .;
+        _etext = ALIGN(0x10);
     }
 
-    .data : ALIGN(0x10)
+    .data (_etext):
     {
+        _sdata = .;
         *(.data .data.*)
-        _edata = .;
+        _edata = ALIGN(0x10);
     }
 
-    .bss : ALIGN(0x10)
+    .bss (_edata):
     {
+        _sbss = .;
         *(.bss .bss.*)
+        _ebss = .;
     }
 

misc/rom.ld

@@ -3 +3 @@
 SECTIONS
 {
-    .text (0x100000) :
+    .text (0x100000):
     {
+        _stext = .;
         *(.text .text.*)
         *(.rodata .rodata.*)
-        _etext = .;
+        _etext = ALIGN(0x10);
     }
 
-    .data : ALIGN(0x10)
+    .data (_etext):
     {
+        _sdata = .;
         *(.data .data.*)
         _edata = .;
     }
 
-    .bss (0x400) :
+    .bss (0x400):
     {
+        _sbss = .;
         *(.bss .bss.*)
+        _ebss = .;
     }
-
-    _end = .;
 }