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Revu la propagation des exceptions a travers le callback. 

git-svn-id: http://caml.inria.fr/svn/ocaml/trunk@558 f963ae5c-01c2-4b8c-9fe0-0dff7051ff02
master
Xavier Leroy 1995-12-20 10:48:10 +00:00
parent 4fabf7b6b6
commit 67bfa84a18
1 changed files with 26 additions and 5 deletions
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31
asmrun/sparc.asm
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@ -49,6 +49,7 @@
#define Callback3 _callback3
#define Caml_apply2 _caml_apply2
#define Caml_apply3 _caml_apply3
#define Mlraise _mlraise
#define System_frametable _system_frametable
#endif
@ -87,6 +88,7 @@
#define Callback3 callback3
#define Caml_apply2 caml_apply2
#define Caml_apply3 caml_apply3
#define Mlraise mlraise
#define System_frametable system_frametable
#endif
@ -284,34 +286,53 @@ L107: mov %g5, %sp
.global Callback
Callback:
/* Save callee-save registers and return address */
save %sp, -104, %sp
save %sp, -96, %sp
/* Initial shuffling of arguments */
mov %i0, %g1
mov %i1, %i0 /* first arg */
mov %g1, %i1 /* environment */
ld [%g1], %l2 /* code pointer */
L108:
/* Set up a trap frame to catch exceptions escaping the Caml code */
sub %sp, 8, %sp
Load(Caml_exception_pointer, %g5)
sethi %hi(L110), %g4
or %g4, %lo(L110), %g4
std %g4, [%sp + 96]
mov %sp, %g5
/* Set up a callback link on the stack. */
sub %sp, 8, %sp
Load(Caml_bottom_of_stack, %l0)
Load(Caml_last_return_address, %l1)
std %l0, [%sp + 96]
/* Reload allocation pointers and trap pointer */
Load(Caml_exception_pointer, %g5)
/* Reload allocation pointers */
Load(Young_ptr, %g6)
Load(Young_start, %g7)
/* Call the Caml code */
L109: call %l2
nop
/* Restore the global variables used by caml_c_call */
Store(%g5, Caml_exception_pointer)
Store(%g6, Young_ptr)
ld [%sp + 100], %l0
add %sp, 8, %sp
Store(%l0, Caml_last_return_address)
/* Pop trap frame and restore caml_exception_pointer */
ld [%sp + 100], %g5
add %sp, 8, %sp
Store(%g5, Caml_exception_pointer)
/* Save allocation pointer */
Store(%g6, Young_ptr)
/* Move result where the C function expects it */
mov %o0, %i0 /* %i0 will become %o0 after restore */
/* Reload callee-save registers and return */
ret
restore
L110:
/* The trap handler: re-raise the exception through mlraise,
so that local C roots are cleaned up correctly. */
Store(%g5, Caml_exception_pointer)
Store(%g6, Young_ptr)
call Mlraise /* never returns */
nop
.global Callback2
Callback2: