ARM: Implement setjmp/longjmp.
* lib/arm-mes-gcc/setjmp.c (setjmp): Implement. (longjmp): Implement.
This commit is contained in:
parent
21bf8a0d92
commit
fbe90fb293
|
@ -21,34 +21,41 @@
|
||||||
#include <setjmp.h>
|
#include <setjmp.h>
|
||||||
#include <stdlib.h>
|
#include <stdlib.h>
|
||||||
|
|
||||||
|
/* This assumes that both longjmp and setjmp either have frames, or both have no frames. */
|
||||||
|
|
||||||
void
|
void
|
||||||
longjmp (jmp_buf env, int val)
|
longjmp (jmp_buf env, int val)
|
||||||
{
|
{
|
||||||
val = val == 0 ? 1 : val;
|
|
||||||
// *INDENT-OFF*
|
// *INDENT-OFF*
|
||||||
#if 1
|
|
||||||
#warning LONGJMP not implemented
|
|
||||||
#else
|
|
||||||
asm (
|
asm (
|
||||||
"mov 0x8(%ebp),%ebp\n\t" // env*
|
"mov r0, %0\n\t"
|
||||||
|
"mov r1, %1\n\t"
|
||||||
"mov 0x4(%ebp),%ebx\n\t" // env->__pc
|
"cmp r1, #0\n\t"
|
||||||
"mov 0x8(%ebp),%esp\n\t" // env->__sp
|
"moveq r1, #1\n\t" /* returning 0 is not allowed, even when the user wanted to. */
|
||||||
"mov 0x0(%ebp),%ebp\n\t" // env->__bp
|
"ldr r13, [r0], #4\n\t" /* stack pointer (sp) */
|
||||||
"jmp *%ebx\n\t" // jmp *PC
|
"ldr r14, [r0], #4\n\t" /* link register (lr) */
|
||||||
);
|
"ldmia r0!, {r4, r5, r6, r7, r8, r9, r10, r11}\n\t"
|
||||||
#endif
|
// TODO: If using VFP, vldmia r0!, {d8-d15}
|
||||||
|
"mov r0, r1\n\t"
|
||||||
|
:
|
||||||
|
: "r" (env), "r" (val));
|
||||||
// *INDENT-ON*
|
// *INDENT-ON*
|
||||||
// not reached
|
// not reached
|
||||||
exit (42);
|
|
||||||
}
|
}
|
||||||
|
|
||||||
int
|
int
|
||||||
setjmp (jmp_buf env)
|
setjmp (jmp_buf env)
|
||||||
{
|
{
|
||||||
long *p = (long *) &env;
|
// *INDENT-OFF*
|
||||||
env[0].__bp = p[-2];
|
asm (
|
||||||
env[0].__pc = p[-1];
|
"mov r0, %0\n\t"
|
||||||
env[0].__sp = (long) &env;
|
"str r13, [r0], #4\n\t" /* stack pointer (sp) */
|
||||||
|
"str r14, [r0], #4\n\t" /* link register (lr) */
|
||||||
|
"stmia r0!, {r4, r5, r6, r7, r8, r9, r10, r11}\n\t"
|
||||||
|
// TODO: If using VFP, vstmia r0!, {d8-d15}
|
||||||
|
:
|
||||||
|
: "r" (env)
|
||||||
|
: "r0");
|
||||||
|
// *INDENT-ON*
|
||||||
return 0;
|
return 0;
|
||||||
}
|
}
|
||||||
|
|
Loading…
Reference in New Issue