Added boot carrier for freeldr. I'm at the point where I need to do something about the mac disklabel, because freeldr is trying to read a PC partition table. I'll need to sleep on it a bit. Modified: trunk/reactos/boot/freeldr/Makefile Modified: trunk/reactos/boot/freeldr/bootsect/Makefile Added: trunk/reactos/boot/freeldr/bootsect/Makefile.i386 Added: trunk/reactos/boot/freeldr/bootsect/Makefile.powerpc Added: trunk/reactos/boot/freeldr/bootsect/ofwboot.s _____
Modified: trunk/reactos/boot/freeldr/Makefile --- trunk/reactos/boot/freeldr/Makefile 2005-03-30 22:04:56 UTC (rev 14385) +++ trunk/reactos/boot/freeldr/Makefile 2005-03-31 09:30:29 UTC (rev 14386) @@ -29,7 +29,7 @@
$(MAKE) -C fdebug
test: - + clean: $(MAKE) -C bootsect clean $(MAKE) -C freeldr clean @@ -38,6 +38,7 @@ $(MAKE) -C tools clean
bootcd: +ifeq ($(ARCH),i386) $(CP) bootsect/isoboot.bin ${BOOTCD_DIR}/../isoboot.bin $(CP) bootsect/dosmbr.bin ${BOOTCD_DIR}/loader/dosmbr.bin $(CP) bootsect/ext2.bin ${BOOTCD_DIR}/loader/ext2.bin @@ -46,5 +47,6 @@ $(CP) bootsect/isoboot.bin ${BOOTCD_DIR}/loader/isoboot.bin $(CP) freeldr/freeldr.sys ${BOOTCD_DIR}/loader/freeldr.sys $(CP) freeldr/setupldr.sys ${BOOTCD_DIR}/loader/setupldr.sys +endif
.PHONY : clean _____
Modified: trunk/reactos/boot/freeldr/bootsect/Makefile --- trunk/reactos/boot/freeldr/bootsect/Makefile 2005-03-30 22:04:56 UTC (rev 14385) +++ trunk/reactos/boot/freeldr/bootsect/Makefile 2005-03-31 09:30:29 UTC (rev 14386) @@ -25,56 +25,8 @@
.PHONY : clean bootcd
-all: $(BIN2C) dosmbr.bin fat.bin fat32.bin isoboot.bin ext2.bin - - -$(BIN2C) : - @$(MAKE) --no-print-directory -C $(FREELDR_TOOLS_PATH) - -dosmbr.bin : dosmbr.asm - @echo freeldr: Assembling dosmbr - @$(NASM_CMD) $(NFLAGS) -o dosmbr.bin -f bin dosmbr.asm - -fat.bin : fat.asm $(BIN2C) - @echo freeldr: Assembling fat - @$(NASM_CMD) $(NFLAGS) -o fat.bin -f bin fat.asm - @$(BIN2C) fat.bin fat.h fat_data - - -fat32.bin : fat32.asm $(BIN2C) - @echo freeldr: Assembling fat32 - @$(NASM_CMD) $(NFLAGS) -o fat32.bin -f bin fat32.asm - @$(BIN2C) fat32.bin fat32.h fat32_data - -isoboot.bin : isoboot.asm - @echo freeldr: Assembling isoboot - @$(NASM_CMD) $(NFLAGS) -o isoboot.bin -f bin isoboot.asm - -ext2.bin : ext2.asm - @echo freeldr: Assembling ext2 - @$(NASM_CMD) $(NFLAGS) -o ext2.bin -f bin ext2.asm - @$(BIN2C) ext2.bin ext2.h ext2_data - - -.PHONY : bootcd -bootcd: bootcd_dirs isoboot.bin - $(CP) isoboot.bin $(BOOTCD_DIR) - $(CP) dosmbr.bin $(BOOTCD_DIR)/disk/loader - $(CP) ext2.bin $(BOOTCD_DIR)/disk/loader - $(CP) fat.bin $(BOOTCD_DIR)/disk/loader - $(CP) fat32.bin $(BOOTCD_DIR)/disk/loader - $(CP) isoboot.bin $(BOOTCD_DIR)/disk/loader - -.PHONY : bootcd_dirs -bootcd_dirs: - $(MKDIR) $(BOOTCD_DIR) - $(MKDIR) $(BOOTCD_DIR)/disk - $(MKDIR) $(BOOTCD_DIR)/disk/reactos - $(MKDIR) $(BOOTCD_DIR)/disk/install - $(MKDIR) $(BOOTCD_DIR)/disk/bootdisk - $(MKDIR) $(BOOTCD_DIR)/disk/loader - -clean: - @-$(RM) *.bin - @-$(RM) *.h - @echo freeldr: Clean ALL done. +ifeq ($(ARCH),powerpc) +include Makefile.powerpc +else +include Makefile.i386 +endif _____
Added: trunk/reactos/boot/freeldr/bootsect/Makefile.i386 --- trunk/reactos/boot/freeldr/bootsect/Makefile.i386 2005-03-30 22:04:56 UTC (rev 14385) +++ trunk/reactos/boot/freeldr/bootsect/Makefile.i386 2005-03-31 09:30:29 UTC (rev 14386) @@ -0,0 +1,52 @@
+all: $(BIN2C) dosmbr.bin fat.bin fat32.bin isoboot.bin ext2.bin + +$(BIN2C) : + @$(MAKE) --no-print-directory -C $(FREELDR_TOOLS_PATH) + +dosmbr.bin : dosmbr.asm + @echo ===================================================== Assembling dosmbr + @$(NASM_CMD) $(NFLAGS) -o dosmbr.bin -f bin dosmbr.asm + +fat.bin : fat.asm $(BIN2C) + @echo ===================================================== Assembling fat + @$(NASM_CMD) $(NFLAGS) -o fat.bin -f bin fat.asm + @$(BIN2C) fat.bin fat.h fat_data + + +fat32.bin : fat32.asm $(BIN2C) + @echo ===================================================== Assembling fat32 + @$(NASM_CMD) $(NFLAGS) -o fat32.bin -f bin fat32.asm + @$(BIN2C) fat32.bin fat32.h fat32_data + +isoboot.bin : isoboot.asm + @echo ===================================================== Assembling isoboot + @$(NASM_CMD) $(NFLAGS) -o isoboot.bin -f bin isoboot.asm + +ext2.bin : ext2.asm + @echo ===================================================== Assembling ext2 + @$(NASM_CMD) $(NFLAGS) -o ext2.bin -f bin ext2.asm + @$(BIN2C) ext2.bin ext2.h ext2_data + + +.PHONY : bootcd +bootcd: bootcd_dirs isoboot.bin + $(CP) isoboot.bin $(BOOTCD_DIR) + $(CP) dosmbr.bin $(BOOTCD_DIR)/disk/loader + $(CP) ext2.bin $(BOOTCD_DIR)/disk/loader + $(CP) fat.bin $(BOOTCD_DIR)/disk/loader + $(CP) fat32.bin $(BOOTCD_DIR)/disk/loader + $(CP) isoboot.bin $(BOOTCD_DIR)/disk/loader + +.PHONY : bootcd_dirs +bootcd_dirs: + $(MKDIR) $(BOOTCD_DIR) + $(MKDIR) $(BOOTCD_DIR)/disk + $(MKDIR) $(BOOTCD_DIR)/disk/reactos + $(MKDIR) $(BOOTCD_DIR)/disk/install + $(MKDIR) $(BOOTCD_DIR)/disk/bootdisk + $(MKDIR) $(BOOTCD_DIR)/disk/loader + +clean: + @-$(RM) *.bin + @-$(RM) *.h + @echo Clean ALL done. _____
Added: trunk/reactos/boot/freeldr/bootsect/Makefile.powerpc --- trunk/reactos/boot/freeldr/bootsect/Makefile.powerpc 2005-03-30 22:04:56 UTC (rev 14385) +++ trunk/reactos/boot/freeldr/bootsect/Makefile.powerpc 2005-03-31 09:30:29 UTC (rev 14386) @@ -0,0 +1,35 @@
+TOOLS=$(PATH_TO_TOP)/tools +SECTIONS= \ + --only-section=.text \ + --only-section=.data \ + --only-section=.bss +LDSECT= -Ttext 0xe00000 -Tdata 0xe10000 +OBJS=ofwboot.o freeldr.o +CFLAGS=-mbig -meabi -fPIC -fno-builtin -I../freeldr/include +FREELDR=../freeldr/freeldr.sys + +.SUFFIXES: .c .o + +all: ofwldr + +hack-coff$(EXEEXT): + $(HOST_CC) -I../freeldr/include hack-coff.c -o $@ + +ofwboot.o: ofwboot.s + $(NASM_CMD) $< -c -o $@ + +$(FREELDR): + $(MAKE) -C ../freeldr + +freeldr.o: $(FREELDR) + $(TOOLS)/ppc-le2be $< freeldr.tmp + $(OBJCOPY) -I binary -O elf32-powerpc -B powerpc:common freeldr.tmp $@ + rm freeldr.tmp + +ofwldr: $(OBJS) + mppcw32-ld --no-omagic $(LDSECT) $(OBJS) -g -o $@.elf + mppcw32-objcopy $(SECTIONS) -O aixcoff-rs6000 $@.elf $@ + $(TOOLS)/hack-coff $@ + +clean: + rm -rf ofwldr *.o *.elf *.tmp _____
Added: trunk/reactos/boot/freeldr/bootsect/ofwboot.s --- trunk/reactos/boot/freeldr/bootsect/ofwboot.s 2005-03-30 22:04:56 UTC (rev 14385) +++ trunk/reactos/boot/freeldr/bootsect/ofwboot.s 2005-03-31 09:30:29 UTC (rev 14386) @@ -0,0 +1,960 @@
+ .section .text +_start: + .long 0xe00000 + 12 + .long 0 + .long 0 + +/* + * LIFTED FROM arch/macppc/stand/ofwboot/Locore.c + * Copyright (C) 1995, 1996 Wolfgang Solfrank. + * Copyright (C) 1995, 1996 TooLs GmbH. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by TooLs GmbH. + * 4. The name of TooLs GmbH may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES ; LOSS OF USE, DATA, OR PROFITS; + * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR + * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF + * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +_begin: + sync + isync + + lis %r1,stack@ha + addi %r1,%r1,stack@l + addi %r1,%r1,16384 - 0x10 + + mfmsr %r8 + li %r0,0 + mtmsr %r0 + isync + + mtibatu 0,%r0 + mtibatu 1,%r0 + mtibatu 2,%r0 + mtibatu 3,%r0 + mtdbatu 0,%r0 + mtdbatu 1,%r0 + mtdbatu 2,%r0 + mtdbatu 3,%r0 + + li %r9,0x12 /* BATL(0, BAT_M, BAT_PP_RW) */ + mtibatl 0,%r9 + mtdbatl 0,%r9 + li %r9,0x1ffe /* BATU(0, BAT_BL_256M, BAT_Vs) */ + mtibatu 0,%r9 + mtdbatu 0,%r9 + isync + + li %r8,0x3030 + mtmsr %r8 + + /* Store ofw call addr */ + mr %r21,%r5 + lis %r10,0xe00000@ha + stw %r5,ofw_call_addr - _start@l(%r10) + + lis %r4,_binary_freeldr_tmp_end@ha + addi %r4,%r4,_binary_freeldr_tmp_end@l + lis %r3,_binary_freeldr_tmp_start@ha + addi %r3,%r3,_binary_freeldr_tmp_start@l + + lis %r5,0x8000@ha + addi %r5,%r5,0x8000@l + + bl copy_bits + + bl zero_registers + + lis %r3,0xe00000@ha + addi %r3,%r3,freeldr_banner - _start + + bl ofw_print_string + + bl ofw_print_eol + + /* Zero CTR */ + mtcr %r31 + + lis %r3,0x8000@ha + addi %r3,%r3,0x8000@l + + mtlr %r3 + + lis %r3,call_ofw@ha + addi %r3,%r3,call_ofw - _start + + b call_freeldr + + .align 4 +call_freeldr: + /* Get the address of the functions list -- + * Note: + * Because of little endian switch we must use an even number of + * instructions here.. Pad with a nop if needed. */ + mfmsr %r10 + ori %r10,%r10,1 + mtmsr %r10 + + nop + + /* Note that this is little-endian from here on */ + blr + nop + + .align 4 +call_ofw: + /* R3 has the function offset to call (n * 4) + * Other arg registers are unchanged. + * Note that these 4 instructions are in reverse order due to + * little-endian convention */ + andi. %r0,%r0,65534 + mfmsr %r0 + mtmsr %r0 + /* Now normal ordering resumes */ + subi %r1,%r1,0x100 + + stw %r8,4(%r1) + stw %r9,8(%r1) + stw %r10,12(%r1) + mflr %r8 + stw %r8,16(%r1) + + lis %r10,0xe00000@ha + add %r9,%r3,%r10 + lwz %r3,ofw_functions - _start@l(%r9) + mtctr %r3 + + mr %r3,%r4 + mr %r4,%r5 + mr %r5,%r6 + mr %r6,%r7 + mr %r7,%r8 + + /* Goto the swapped function */ + bctrl + + lwz %r8,16(%r1) + mtlr %r8 + + lwz %r8,4(%r1) + lwz %r9,8(%r1) + lwz %r10,12(%r1) + + addi %r1,%r1,0x100 + /* Ok, go back to little endian */ + mfmsr %r0 + ori %r0,%r0,1 + mtmsr %r0 + + /* Note that this is little-endian from here on */ + blr + nop + +zero_registers: + xor %r2,%r2,%r2 + mr %r0,%r2 + mr %r3,%r2 + + mr %r4,%r2 + mr %r5,%r2 + mr %r6,%r2 + mr %r7,%r2 + + mr %r8,%r2 + mr %r9,%r2 + mr %r10,%r2 + mr %r11,%r2 + + mr %r12,%r2 + mr %r13,%r2 + mr %r14,%r2 + mr %r15,%r2 + + mr %r12,%r2 + mr %r13,%r2 + mr %r14,%r2 + mr %r15,%r2 + + mr %r16,%r2 + mr %r17,%r2 + mr %r18,%r2 + mr %r19,%r2 + + mr %r20,%r2 + mr %r21,%r2 + mr %r22,%r2 + mr %r23,%r2 + + mr %r24,%r2 + mr %r25,%r2 + mr %r26,%r2 + mr %r27,%r2 + + mr %r28,%r2 + mr %r29,%r2 + mr %r30,%r2 + mr %r31,%r2 + + blr + +prim_strlen: + mr %r5,%r3 +prim_strlen_loop: + lbz %r4,0(%r3) + cmpi 0,0,%r4,0 + beq prim_strlen_done + addi %r3,%r3,1 + b prim_strlen_loop + +prim_strlen_done: + sub %r3,%r3,%r5 + blr + +copy_bits: + cmp 0,0,%r3,%r4 + beqlr + lwz %r6,0(%r3) + stw %r6,0(%r5) + addi %r3,%r3,4 + addi %r5,%r5,4 + b copy_bits + +ofw_print_string_hook: + bl ofw_print_number + bl ofw_exit + +ofw_print_string: + /* Reserve some stack space */ + subi %r1,%r1,32 + + /* Save args */ + stw %r3,0(%r1) + + /* Save the lr, a scratch register */ + stw %r8,8(%r1) + mflr %r8 + stw %r8,12(%r1) + + /* Load the package name */ + lis %r3,0xe00000@ha + addi %r3,%r3,ofw_chosen_name - _start + + /* Fire */ + bl ofw_finddevice + + /* Load up for getprop */ + stw %r3,16(%r1) + + lis %r4,0xe00000@ha + addi %r4,%r4,ofw_stdout_name - _start + + addi %r5,%r1,20 + + li %r6,4 + + bl ofw_getprop + + /* Measure the string and remember the length */ + lwz %r3,0(%r1) + bl prim_strlen + mr %r5,%r3 + + lwz %r3,20(%r1) + lwz %r4,0(%r1) + + /* Write the string */ + bl ofw_write + + /* Return */ + lwz %r8,12(%r1) + mtlr %r8 + lwz %r8,8(%r1) + + addi %r1,%r1,32 + blr + + /* Print 8 hex digits representing a number in r3 */ +ofw_print_number: + subi %r1,%r1,32 + stw %r8,0(%r1) + mflr %r8 + stw %r8,4(%r1) + stw %r9,8(%r1) + + xor %r9,%r9,%r9 + stw %r9,12(%r1) + + /* Set up and, devide, shift */ + mr %r8,%r3 + lis %r6,0xf0000000@ha + lis %r7,0x10000000@ha + li %r9,8 + +ofw_number_loop: + nop + cmpi 0,0,%r9,0 + beq ofw_number_return + subi %r9,%r9,1 + + /* Body: isolate digit, divide, print */ + and %r5,%r6,%r8 + divwu %r4,%r5,%r7 + srwi %r6,%r6,4 + srwi %r7,%r7,4 + + nop + + cmpi 0,0,%r4,10 + bge ofw_number_letter + addi %r4,%r4,'0' + b ofw_number_digit_out + +ofw_number_letter: + addi %r4,%r4,'A' - 10 + +ofw_number_digit_out: + stb %r4,12(%r1) + addi %r3,%r1,12 + + stw %r6,16(%r1) + stw %r7,20(%r1) + stw %r8,24(%r1) + stw %r9,28(%r1) + + bl ofw_print_string + + lwz %r6,16(%r1) + lwz %r7,20(%r1) + lwz %r8,24(%r1) + lwz %r9,28(%r1) + + b ofw_number_loop + +ofw_number_return: + /* Return */ + lwz %r9,8(%r1) + lwz %r8,4(%r1) + mtlr %r8 + lwz %r8,0(%r1) + addi %r1,%r1,32 + blr + +ofw_print_eol: + subi %r1,%r1,16 + stw %r8,0(%r1) + mflr %r8 + stw %r8,4(%r1) + li %r4,0x0d0a + sth %r4,8(%r1) + xor %r4,%r4,%r4 + sth %r4,10(%r1) + addi %r3,%r1,8 + bl ofw_print_string + lwz %r8,4(%r1) + mtlr %r8 + lwz %r8,0(%r1) + addi %r1,%r1,16 + blr + +ofw_print_nothing: + subi %r1,%r1,16 + stw %r8,0(%r1) + mflr %r8 + stw %r8,4(%r1) + li %r4,0 + sth %r4,8(%r1) + xor %r4,%r4,%r4 + sth %r4,10(%r1) + addi %r3,%r1,8 + bl ofw_print_string + lwz %r8,4(%r1) + mtlr %r8 + lwz %r8,0(%r1) + addi %r1,%r1,16 + blr + +ofw_print_space: + subi %r1,%r1,16 + stw %r8,0(%r1) + mflr %r8 + stw %r8,4(%r1) + li %r4,0x2000 + sth %r4,8(%r1) + xor %r4,%r4,%r4 + sth %r4,10(%r1) + addi %r3,%r1,8 + bl ofw_print_string + lwz %r8,4(%r1) + mtlr %r8 + lwz %r8,0(%r1) + addi %r1,%r1,16 + blr + +ofw_print_regs: + /* Construct ofw exit call */ + subi %r1,%r1,0xa0 + + stw %r0,0(%r1) + stw %r1,4(%r1) + stw %r2,8(%r1) + stw %r3,12(%r1) + + stw %r4,16(%r1) + stw %r5,20(%r1) + stw %r6,24(%r1) + stw %r7,28(%r1) + + stw %r8,32(%r1) + stw %r9,36(%r1) + stw %r10,40(%r1) + stw %r11,44(%r1) + + stw %r12,48(%r1) + stw %r13,52(%r1) + stw %r14,56(%r1) + stw %r15,60(%r1) + + stw %r16,64(%r1) + stw %r17,68(%r1) + stw %r18,72(%r1) + stw %r19,76(%r1) + + stw %r20,80(%r1) + stw %r21,84(%r1) + stw %r22,88(%r1) + stw %r23,92(%r1) + + stw %r24,96(%r1) + stw %r25,100(%r1) + stw %r26,104(%r1) + stw %r27,108(%r1) + + stw %r28,112(%r1) + stw %r29,116(%r1) + stw %r30,120(%r1) + stw %r31,124(%r1) + + mflr %r0 + stw %r0,128(%r1) + mfcr %r0 + stw %r0,132(%r1) + mfctr %r0 + stw %r0,136(%r1) + mfmsr %r0 + stw %r0,140(%r1) + + /* Count at zero */ + xor %r0,%r0,%r0 + stw %r0,144(%r1) + mr %r3,%r1 + stw %r3,148(%r1) + + /* Body, print the regname, then the register */ +ofw_register_loop: + lwz %r3,144(%r1) + cmpi 0,0,%r3,32 + beq ofw_register_special + lis %r3,0xe00000@ha + addi %r3,%r3,freeldr_reg_init - _start + bl ofw_print_string + lwz %r3,144(%r1) + bl ofw_print_number + bl ofw_print_space + lwz %r3,144(%r1) + mulli %r3,%r3,4 + add %r3,%r1,%r3 + lwz %r3,0(%r3) + stw %r3,152(%r1) + bl ofw_print_number + lwz %r3,144(%r1) + addi %r3,%r3,1 + stw %r3,144(%r1) + b done_dump + +dump_optional: + bl ofw_print_space + bl ofw_print_space + lwz %r3,152(%r1) + lwz %r3,0(%r3) + bl ofw_print_number + bl ofw_print_space + lwz %r3,152(%r1) + lwz %r3,4(%r3) + bl ofw_print_number + bl ofw_print_space + lwz %r3,152(%r1) + lwz %r3,8(%r3) + bl ofw_print_number + bl ofw_print_space + lwz %r3,152(%r1) + lwz %r3,12(%r3) + bl ofw_print_number + bl ofw_print_space +done_dump: + bl ofw_print_eol + b ofw_register_loop + +ofw_register_special: + /* LR */ + lis %r3,0xe00000@ha + addi %r3,%r3,freeldr_reg_lr - _start + bl ofw_print_string + bl ofw_print_space + lwz %r3,128(%r1) + bl ofw_print_number + bl ofw_print_eol + + /* CR */ + lis %r3,0xe00000@ha + addi %r3,%r3,freeldr_reg_cr - _start + bl ofw_print_string + bl ofw_print_space + lwz %r3,132(%r1) + bl ofw_print_number + bl ofw_print_eol + + /* CTR */ + lis %r3,0xe00000@ha + addi %r3,%r3,freeldr_reg_ctr - _start + bl ofw_print_string + bl ofw_print_space + lwz %r3,136(%r1) + bl ofw_print_number + bl ofw_print_eol + + /* MSR */ + lis %r3,0xe00000@ha + addi %r3,%r3,freeldr_reg_msr - _start + bl ofw_print_string + bl ofw_print_space + lwz %r3,140(%r1) + bl ofw_print_number + bl ofw_print_eol + + /* Return */ + lwz %r0,128(%r1) + mtlr %r0 + + lwz %r0,0(%r1) + lwz %r2,8(%r1) + lwz %r3,12(%r1) + + lwz %r4,16(%r1) + lwz %r5,20(%r1) + lwz %r6,24(%r1) + lwz %r7,28(%r1) + + addi %r1,%r1,0xa0 + + blr + +ofw_finddevice_hook: + subi %r1,%r1,32 + stw %r3,0(%r1) + mflr %r3 + stw %r3,4(%r1) + lwz %r3,0(%r1) + bl ofw_finddevice + stw %r3,0(%r1) + lwz %r3,4(%r1) + mtlr %r3 + lwz %r3,0(%r1) + addi %r1,%r1,32 + blr + +ofw_finddevice: + /* Reserve stack space ... + * 20 bytes for the ofw call, + * r8, r9, and lr */ + subi %r1,%r1,32 + + /* Store r8, r9, lr */ + stw %r8,20(%r1) + stw %r9,24(%r1) + mflr %r8 + stw %r8,28(%r1) + + /* Get finddevice name */ + lis %r8,0xe00000@ha + addi %r9,%r8,ofw_finddevice_name - _start + stw %r9,0(%r1) + + /* 1 Argument and 1 return */ + li %r9,1 + stw %r9,4(%r1) + stw %r9,8(%r1) + + stw %r3,12(%r1) + + /* Load up the call address */ + lwz %r9,ofw_call_addr - _start(%r8) + mtlr %r9 + + /* Set argument */ + mr %r3,%r1 + + /* Fire */ + blrl + + lwz %r3,16(%r1) + + /* Restore registers */ + lwz %r8,28(%r1) + mtlr %r8 + lwz %r9,24(%r1) + lwz %r8,20(%r1) + + addi %r1,%r1,32 + + /* Return */ + blr + +ofw_getprop_hook: + /* Reserve stack space: + * 32 bytes for the ofw call + * 12 bytes for r8, r9, lr + */ + /* Reserve stack space ... + * 20 bytes for the ofw call, + * r8, r9, and lr */ + subi %r1,%r1,48 + + /* Store r8, r9, lr */ + stw %r8,32(%r1) + stw %r9,36(%r1) + mflr %r8 + stw %r8,40(%r1) + + /* Get getprop name */ + lis %r8,0xe00000@ha + addi %r9,%r8,ofw_getprop_name - _start + stw %r9,0(%r1) + + /* 4 Argument and 1 return */ + li %r9,4 + stw %r9,4(%r1) + li %r9,1 + stw %r9,8(%r1) + + stw %r3,12(%r1) /* Package */ + stw %r4,16(%r1) /* Property */ + stw %r5,20(%r1) /* Return buffer */ + stw %r6,24(%r1) /* Buffer size */ + + /* Load up the call address */ + lwz %r9,ofw_call_addr - _start(%r8) + mtlr %r9 + + /* Set argument */ + mr %r3,%r1 + + /* Fire */ + blrl + + /* Workaround to a wierd crash ... not sure what causes it. + * XXX investigate me */ + bl ofw_print_nothing + + /* Return */ + lwz %r3,28(%r1) + + /* Restore registers */ + lwz %r8,40(%r1) + mtlr %r8 + lwz %r9,36(%r1) + lwz %r8,32(%r1) + + addi %r1,%r1,48 + + /* Return */ + blr + +ofw_getprop: + /* Reserve stack space: + * 32 bytes for the ofw call + * 12 bytes for r8, r9, lr + */ + /* Reserve stack space ... + * 20 bytes for the ofw call, + * r8, r9, and lr */ + subi %r1,%r1,48 + + /* Store r8, r9, lr */ + stw %r8,32(%r1) + stw %r9,36(%r1) + mflr %r8 + stw %r8,40(%r1) + + /* Get getprop name */ + lis %r8,0xe00000@ha + addi %r9,%r8,ofw_getprop_name - _start + stw %r9,0(%r1) + + /* 4 Argument and 1 return */ + li %r9,4 + stw %r9,4(%r1) + li %r9,1 + stw %r9,8(%r1) + + stw %r3,12(%r1) /* Package */ + stw %r4,16(%r1) /* Property */ + stw %r5,20(%r1) /* Return buffer */ + stw %r6,24(%r1) /* Buffer size */ + + /* Load up the call address */ + lwz %r9,ofw_call_addr - _start(%r8) + mtlr %r9 + + /* Set argument */ + mr %r3,%r1 + + /* Fire */ + blrl + + /* Return */ + lwz %r3,28(%r1) + + /* Restore registers */ + lwz %r8,40(%r1) + + mtlr %r8 + lwz %r9,36(%r1) + lwz %r8,32(%r1) + + addi %r1,%r1,48 + + /* Return */ + blr + +ofw_write: + /* Reserve stack space: + * 28 bytes for the ofw call + * 12 bytes for r8, r9, lr + */ + /* Reserve stack space ... + * 20 bytes for the ofw call, + * r8, r9, and lr */ + subi %r1,%r1,48 + + nop + + /* Store r8, r9, lr */ + stw %r8,28(%r1) + stw %r9,32(%r1) + mflr %r8 + stw %r8,36(%r1) + + /* Get write name */ + lis %r8,0xe00000@ha + addi %r9,%r8,ofw_write_name - _start + stw %r9,0(%r1) + + /* 3 Arguments and 1 return */ + li %r9,3 + stw %r9,4(%r1) + li %r9,1 + stw %r9,8(%r1) + + stw %r3,12(%r1) + stw %r4,16(%r1) + stw %r5,20(%r1) + + /* Load up the call address */ + lwz %r9,ofw_call_addr - _start(%r8) + mtlr %r9 + + /* Set argument */ + mr %r3,%r1 + + /* Fire */ + blrl + + /* Return */ + lwz %r3,24(%r1) + + /* Restore registers */ + lwz %r8,36(%r1) + mtlr %r8 + lwz %r9,32(%r1) + lwz %r8,28(%r1) + + addi %r1,%r1,48 + + /* Return */ [truncated at 1000 lines; 156 more skipped]
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