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Fixed the mess with all the different stacks

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@204 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Linus Nielsen Feltzing 2002-04-23 21:59:20 +00:00
parent 3236c3581b
commit 8ee52130f0
3 changed files with 17 additions and 16 deletions
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11
gdb/linker.cfg
View file

@ -10,16 +10,17 @@ SECTIONS
*(.rodata) *(.rodata)
} }
.bss :
{
_stack = . + 0x1000;
}
.text : .text :
{ {
*(.text) *(.text)
} }
.bss :
{
_stack = . + 0x1000;
_stub_stack = _stack + 0x1000;
}
.pad 0x0900C800 : .pad 0x0900C800 :
{ {
LONG(0); LONG(0);

18
gdb/sh-stub.c
View file

@ -358,12 +358,11 @@ void catch_exception_127 (void);
void breakpoint (void); void breakpoint (void);
#define init_stack_size 2*1024 /* if you change this you should also modify BINIT */ //#define stub_stack_size 2*1024
#define stub_stack_size 2*1024
int init_stack[init_stack_size] __attribute__ ((section ("stack"))) = {0}; //int stub_stack[stub_stack_size] __attribute__ ((section (".stack"))) = {0};
int stub_stack[stub_stack_size] __attribute__ ((section ("stack"))) = {0};
extern int stub_stack[];
void INIT (void); void INIT (void);
void start (void); void start (void);
@ -934,6 +933,8 @@ void breakpoint (void)
/**** Processor-specific routines start here ****/ /**** Processor-specific routines start here ****/
/**** Processor-specific routines start here ****/ /**** Processor-specific routines start here ****/
extern int stack[];
/* SH1/SH2 exception vector table format */ /* SH1/SH2 exception vector table format */
typedef struct typedef struct
{ {
@ -949,13 +950,12 @@ typedef struct
** Note that we only define the first 128 vectors, since the Jukebox ** Note that we only define the first 128 vectors, since the Jukebox
** firmware has its entry point at 0x200 ** firmware has its entry point at 0x200
*/ */
const vec_type vectable __attribute__ ((section (".vectors"))) = const vec_type vectable __attribute__ ((section (".vectors"))) =
{ {
&start, /* 0: Power-on reset PC */ &start, /* 0: Power-on reset PC */
init_stack + init_stack_size, /* 1: Power-on reset SP */ stack, /* 1: Power-on reset SP */
&start, /* 2: Manual reset PC */ &start, /* 2: Manual reset PC */
init_stack + init_stack_size, /* 3: Manual reset SP */ stack, /* 3: Manual reset SP */
{ {
&catch_exception_4, /* 4: General invalid instruction */ &catch_exception_4, /* 4: General invalid instruction */
&catch_exception_5, /* 5: Reserved for system */ &catch_exception_5, /* 5: Reserved for system */
@ -1097,7 +1097,7 @@ void INIT (void)
dofault = 1; dofault = 1;
stepped = 0; stepped = 0;
stub_sp = stub_stack + stub_stack_size; stub_sp = stub_stack;
breakpoint (); breakpoint ();
/* We should never come here */ /* We should never come here */
@ -1115,7 +1115,7 @@ void sr(void)
" bra _INIT\n" " bra _INIT\n"
" nop\n" " nop\n"
" .align 2\n" " .align 2\n"
"L_sp: .long _init_stack + 8000"); "L_sp: .long _stack");
asm("saveRegisters:\n"); asm("saveRegisters:\n");
asm(" mov.l @(L_reg, pc), r0\n" asm(" mov.l @(L_reg, pc), r0\n"

4
gdb/start.s
View file

@ -23,7 +23,7 @@
.section .text .section .text
.extern _INIT .extern _INIT
.extern _vectable .extern _vectable
.extern _init_stack .extern _stack
.global _start .global _start
.align 2 .align 2
@ -36,6 +36,6 @@ _start:
nop nop
1: .long _vectable 1: .long _vectable
2: .long _init_stack+2*1024*4 2: .long _stack
3: .long _INIT 3: .long _INIT
.type _start,@function .type _start,@function