sauron_le_noir
Joined: 05 Jul 2008
Posts: 229
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 Posted: Fri Jul 17, 2009 7:01 am Post subject: How to declare en function import |
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I try to program a hello world in mips assembler. But i'm in trouble how to declare a import function in my program. When psp-fixup-imports is executed i've received a
Error, invalid stub address.
The Makefile
| Code: |
PSPSDK = $(shell psp-config --pspsdk-path)
PSPLIBSDIR = $(PSPSDK)/..
TARGET = hellomips
OBJS = hellomips.o
CFLAGS = -O2 -G0 -Wall -mno-crt0 -nostartfiles -nostdlib -nodefaultlibs
ASFLAGS = $(CFLAGS)
BUILD_PRX=1
EXTRA_TARGETS = EBOOT.PBP
PSP_EBOOT_TITLE = Hello World
include $(PSPSDK)/lib/build.mak |
the macs.s file
| Code: |
.macro IMPORT_START module, flags_ver
.set push
.section .rodata.sceResident, "a"
.word 0
__stub_modulestr_\module:
.asciz "\module"
.align 2
.section .lib.stub, "a", @progbits
.global __stub_module_\module
__stub_module_\module:
.word __stub_modulestr_\module
.word \flags_ver
.word 0x5
.word __executable_start
.word __executable_start
.set pop
.endm
.macro IMPORT_FUNC module, funcid, funcname
.set push
.set noreorder
.extern __stub_module_\module
.section .sceStub.text, "ax", @progbits
.globl \funcname
.type \funcname, @function
.ent \funcname, 0
\funcname:
.word __stub_module_\module
.word \funcid
.end \funcname
.size \funcname, .-\funcname
.section .rodata.sceNid, "a"
.word \funcid
.set pop
.endm
.macro IMPORT_FUNC_WITH_ALIAS module, funcid, funcname, alias
.set push
.set noreorder
.extern __stub_module_\module
.section .sceStub.text, "ax", @progbits
.globl \alias
.type \alias, @function
\alias:
.globl \funcname
.type \funcname, @function
.ent \funcname, 0
\funcname:
.word __stub_module_\module
.word \funcid
.end \funcname
.size \funcname, .-\funcname
.section .rodata.sceNid, "a"
.word \funcid
.set pop
.endm |
the moduleinfo.s
| Code: |
.globl module_info
.section .rodata.sceModuleInfo,"a",@progbits
.align 4
module_info:
.half 0
.byte 1
.byte 1
.ascii "Hello world\000"
.space 15
.byte 0
.word _gp
.set push
.section .lib.ent.top, "a", @progbits
.align 2
.word 0
__lib_ent_top:
.section .lib.ent.btm, "a", @progbits
.align 2
__lib_ent_bottom:
.word 0
.section .lib.stub.top, "a", @progbits
.align 2
.word 0
__lib_stub_top:
.section .lib.stub.btm, "a", @progbits
.align 2
__lib_stub_bottom:
.word 0
IMPORT_START "LoadExecForKernel",0x00010000
IMPORT_FUNC "LoadExecForKernel",0x05572A5F,sceKernelExitGame
.set pop
.text
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and finaly the main program hellomips.s
| Code: |
.include "mac.s"
.include "moduleinfo.s"
.global _start
.global module_start
.text
_start:
module_start:
.set noreorder
j $31
nop
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