Usermode - Added armv6 userland shims

diff --git a/Usermode/Libraries/acess.ld_src/acess_armv6.ld.h b/Usermode/Libraries/acess.ld_src/acess_armv6.ld.h
new file mode 100644 (file)
index 0000000..0ea7f90
--- /dev/null
+++ b/Usermode/Libraries/acess.ld_src/acess_armv6.ld.h
@@ -0,0 +1,235 @@
+/* Script for -z combreloc: combine and sort reloc sections */
+OUTPUT_FORMAT("elf32-littlearm", "elf32-bigarm",
+             "elf32-littlearm")
+OUTPUT_ARCH(arm)
+ENTRY(_start)
+SEARCH_DIR(__LIBDIR)
+SECTIONS
+{
+  /* Read-only sections, merged into text segment: */
+  PROVIDE (__executable_start = SEGMENT_START("text-segment", 0x8000)); . = SEGMENT_START("text-segment", 0x8000);
+  .interp         : { *(.interp) }
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+      PROVIDE_HIDDEN (__rela_iplt_start = .);
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+    }
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+      *(.rela.tdata .rela.tdata.* .rela.gnu.linkonce.td.*)
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+      *(.rela.ctors)
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+      *(.rela.bss .rela.bss.* .rela.gnu.linkonce.b.*)
+      PROVIDE_HIDDEN (__rel_iplt_start = .);
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+      PROVIDE_HIDDEN (__rela_iplt_start = .);
+      *(.rela.iplt)
+      PROVIDE_HIDDEN (__rela_iplt_end = .);
+    }
+  .rel.plt        :
+    {
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+  .init           :
+  {
+    KEEP (*(.init))
+  } =0
+  .plt            : { *(.plt) }
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+  {
+    *(.text.unlikely .text.*_unlikely)
+    *(.text.exit .text.exit.*)
+    *(.text.startup .text.startup.*)
+    *(.text.hot .text.hot.*)
+    *(.text .stub .text.* .gnu.linkonce.t.*)
+    /* .gnu.warning sections are handled specially by elf32.em.  */
+    *(.gnu.warning)
+    *(.glue_7t) *(.glue_7) *(.vfp11_veneer) *(.v4_bx)
+  } =0
+  .fini           :
+  {
+    KEEP (*(.fini))
+  } =0
+  PROVIDE (__etext = .);
+  PROVIDE (_etext = .);
+  PROVIDE (etext = .);
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+  .eh_frame       : ONLY_IF_RO { KEEP (*(.eh_frame)) }
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+     the same address within the page on the next page up.  */
+  . = ALIGN(CONSTANT (MAXPAGESIZE)) + (. & (CONSTANT (MAXPAGESIZE) - 1));
+  /* Exception handling  */
+  .eh_frame       : ONLY_IF_RW { KEEP (*(.eh_frame)) }
+  .gcc_except_table   : ONLY_IF_RW { *(.gcc_except_table .gcc_except_table.*) }
+  /* Thread Local Storage sections  */
+  .tdata         : { *(.tdata .tdata.* .gnu.linkonce.td.*) }
+  .tbss                  : { *(.tbss .tbss.* .gnu.linkonce.tb.*) *(.tcommon) }
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+  {
+    PROVIDE_HIDDEN (__preinit_array_start = .);
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+  {
+    /* gcc uses crtbegin.o to find the start of
+       the constructors, so we make sure it is
+       first.  Because this is a wildcard, it
+       doesn't matter if the user does not
+       actually link against crtbegin.o; the
+       linker won't look for a file to match a
+       wildcard.  The wildcard also means that it
+       doesn't matter which directory crtbegin.o
+       is in.  */
+    KEEP (*crtbegin.o(.ctors))
+    KEEP (*crtbegin?.o(.ctors))
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+       the crtend.o file until after the sorted ctors.
+       The .ctor section from the crtend file contains the
+       end of ctors marker and it must be last */
+    KEEP (*(EXCLUDE_FILE (*crtend.o *crtend?.o ) .ctors))
+    KEEP (*(SORT(.ctors.*)))
+    KEEP (*(.ctors))
+  }
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+  {
+    KEEP (*crtbegin.o(.dtors))
+    KEEP (*crtbegin?.o(.dtors))
+    KEEP (*(EXCLUDE_FILE (*crtend.o *crtend?.o ) .dtors))
+    KEEP (*(SORT(.dtors.*)))
+    KEEP (*(.dtors))
+  }
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+  .data.rel.ro : { *(.data.rel.ro.local* .gnu.linkonce.d.rel.ro.local.*) *(.data.rel.ro* .gnu.linkonce.d.rel.ro.*) }
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+      _end.  Align after .bss to ensure correct alignment even if the
+      .bss section disappears because there are no input sections.
+      FIXME: Why do we need it? When there is no .bss section, we don't
+      pad the .data section.  */
+   . = ALIGN(. != 0 ? 32 / 8 : 1);
+  }
+  _bss_end__ = . ; __bss_end__ = . ;
+  . = ALIGN(32 / 8);
+  . = ALIGN(32 / 8);
+  __end__ = . ;
+  _end = .; PROVIDE (end = .);
+  /* Stabs debugging sections.  */
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+  /DISCARD/ : { *(.note.GNU-stack) *(.gnu_debuglink) *(.gnu.lto_*) }
+}
+
+

diff --git a/Usermode/Libraries/ld-acess.so_src/arch/armv6.S.h b/Usermode/Libraries/ld-acess.so_src/arch/armv6.S.h
new file mode 100644 (file)
index 0000000..3564392
--- /dev/null
+++ b/Usermode/Libraries/ld-acess.so_src/arch/armv6.S.h
@@ -0,0 +1,137 @@
+//
+// Acess2 ARMv7 - System Calls
+//
+
+.globl _start
+.extern SoMain
+_start:
+       pop {r0}
+       ldm sp, {r1,r2,r3}
+       bl SoMain
+       
+       mov r4, r0
+
+       pop {r0,r1,r2}
+       blx r4
+       
+       b _exit
+
+@ Stupid GCC
+.globl __ucmpdi2
+__ucmpdi2:
+       cmp r0, r2
+       movmi r0, #0
+       movmi pc, lr
+       movhi r0, #2
+       movhi pc, lr
+       cmp r1, r2
+       movmi r0, #0
+       movmi pc, lr
+       movhi r0, #2
+       movhi pc, lr
+       mov r0, #1
+       mov pc, lr
+
+@ Well, can't blame it
+@ - Clear the instruction cache
+.globl __clear_cache
+__clear_cache:
+       svc #0x1001
+       mov pc, lr
+
+@ DEST
+@ SRC
+@_memcpy:
+@      push rbp
+@      mov rbp, rsp
+@      
+@      ; RDI - First Param
+@      ; RSI - Second Param
+@      mov rcx, rdx    ; RDX - Third
+@      rep movsb
+@      
+@      pop rbp
+@      ret
+@
+.globl _errno
+_errno:        .long   0       @ Placed in .text, to allow use of relative addressing
+
+.macro syscall0 _name, _num    
+.globl \_name
+\_name:
+       push {lr}
+       svc #\_num
+       str r2, _errno
+       pop {pc}
+.endm
+
+.macro syscall5 _name, _num
+.globl \_name
+\_name:
+       push {r4, lr}
+       ldr r4, [sp,#8]
+       svc #\_num
+       str r2, _errno
+       pop {r4, pc}
+.endm
+
+.macro syscall6 _name, _num
+.globl \_name
+\_name:
+       push {r4,r5,lr}
+       ldr r4, [sp,#12]
+       ldr r5, [sp,#16]
+       svc #\_num
+       str r2, _errno
+       pop {r4,r5,pc}
+.endm
+
+#define SYSCALL0(_name,_num)   syscall0 _name, _num
+#define SYSCALL1(_name,_num)   SYSCALL0(_name, _num)
+#define SYSCALL2(_name,_num)   SYSCALL0(_name, _num)
+#define SYSCALL3(_name,_num)   SYSCALL0(_name, _num)
+#define SYSCALL4(_name,_num)   SYSCALL0(_name, _num)
+// TODO: 5/6 need special handling, because the args are on the stack
+#define SYSCALL5(_name,_num)   syscall5 _name, _num
+#define SYSCALL6(_name,_num)   syscall6 _name, _num
+
+// Override the clone syscall
+#define _exit  _exit_raw
+#define _clone _clone_raw
+#include "syscalls.s.h"
+#undef _exit
+#undef _clone
+
+.globl _clone
+_clone:
+       push {r4}
+       mov r4, r1
+       svc #SYS_CLONE
+       str r2, _errno
+       tst r4, r4
+       beq _clone_ret
+       @ If in child, set SP
+       tst r0,r0
+       movne sp, r4
+_clone_ret:
+       pop {r4}
+       mov pc, lr
+
+.globl _exit
+_exit:
+       svc #0
+       b .
+
+.globl abort
+abort:
+       mov r0, #0
+       svc #0
+       b .
+
+.globl __exidx_start
+__exidx_start:
+       b .
+.globl __exidx_end
+__exidx_end:
+       b .
+

diff --git a/Usermode/Libraries/ld-acess.so_src/arch/armv6.ld b/Usermode/Libraries/ld-acess.so_src/arch/armv6.ld
new file mode 100644 (file)
index 0000000..7f1b3c8
--- /dev/null
+++ b/Usermode/Libraries/ld-acess.so_src/arch/armv6.ld
@@ -0,0 +1,69 @@
+ENTRY(_start)
+OUTPUT_FORMAT(elf32-littlearm)
+
+SECTIONS {
+       . = 0x6FFF0000;
+       gLinkedBase = .;
+       . += SIZEOF_HEADERS;
+       .interp          : { *(.interp) }
+       .note.gnu.build-id : { *(.note.gnu.build-id) }
+       .hash              : { *(.hash) }
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+       .dynsym          : { *(.dynsym) }
+       .dynstr          : { *(.dynstr) }
+       .gnu.version    : { *(.gnu.version) }
+       .gnu.version_d  : { *(.gnu.version_d) }
+       .gnu.version_r  : { *(.gnu.version_r) }
+       .rel.dyn                :
+       {
+               *(.rel.init)
+               *(.rel.text .rel.text.* .rel.gnu.linkonce.t.*)
+               *(.rel.fini)
+               *(.rel.rodata .rel.rodata.* .rel.gnu.linkonce.r.*)
+               *(.rel.data.rel.ro* .rel.gnu.linkonce.d.rel.ro.*)
+               *(.rel.data .rel.data.* .rel.gnu.linkonce.d.*)
+               *(.rel.tdata .rel.tdata.* .rel.gnu.linkonce.td.*)
+               *(.rel.tbss .rel.tbss.* .rel.gnu.linkonce.tb.*)
+               *(.rel.ctors)
+               *(.rel.dtors)
+               *(.rel.got)
+               *(.rel.bss .rel.bss.* .rel.gnu.linkonce.b.*)
+       }
+       .rela.dyn          :
+       {
+               *(.rela.init)
+               *(.rela.text .rela.text.* .rela.gnu.linkonce.t.*)
+               *(.rela.fini)
+               *(.rela.rodata .rela.rodata.* .rela.gnu.linkonce.r.*)
+               *(.rela.data .rela.data.* .rela.gnu.linkonce.d.*)
+               *(.rela.tdata .rela.tdata.* .rela.gnu.linkonce.td.*)
+               *(.rela.tbss .rela.tbss.* .rela.gnu.linkonce.tb.*)
+               *(.rela.ctors)
+               *(.rela.dtors)
+               *(.rela.got)
+               *(.rela.bss .rela.bss.* .rela.gnu.linkonce.b.*)
+       }
+
+       .text : AT(ADDR(.text)) {
+               code = .;
+               *(.text)
+               *(.rodata*)
+               PROVIDE_HIDDEN(__exidx_start = .);
+               .ARM.exidx   : { *(.ARM.exidx* .gnu.linkonce.armexidx.*) }
+               PROVIDE_HIDDEN(__exidx_end = .);
+       }
+
+       .data ALIGN (0x1000) : AT(ADDR(.data)) {
+               data = .;
+               *(.data)
+       }
+
+       .bss ALIGN (0x1000) : AT(ADDR(.bss)) {
+               _sbss = .;
+               *(COMMON)
+               *(.bss)
+               _ebss = .;
+               bss = .;
+       }
+       _end = .;
+}

diff --git a/Usermode/Libraries/libc.so_src/arch/armv6.S b/Usermode/Libraries/libc.so_src/arch/armv6.S
new file mode 100644 (file)
index 0000000..be4887e
--- /dev/null
+++ b/Usermode/Libraries/libc.so_src/arch/armv6.S
@@ -0,0 +1,24 @@
+@ 
+@ Acess2 C Library
+@ - By John Hodge (thePowersGang)
+@ 
+@ arch/armv6.S
+@ - ARMv6 specific code
+.globl setjmp
+setjmp:
+       @ RO: Buffer
+       stm r0, {r0-r14}
+       eor r0, r0
+       mov pc, lr
+
+.globl longjmp
+longjmp:
+       @ R0: Buffer
+       @ R1: Value
+       add r0, #8
+       ldm r0, {r2-r14}
+       mov r0, r1
+       tst r0, r0
+       addeq r0, #1
+       mov pc, lr      @ Will return to after setjmp
+