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Merge branch 'master' of git://factorcode.org/git/factor

db4
Slava Pestov 2009-05-07 19:41:54 -05:00
parent 25886ff453 b9169a6de2
commit 4a2492c3fc
3 changed files with 33 additions and 13 deletions
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11
basis/cpu/ppc/ppc.factor
View File

@ -3,9 +3,10 @@
USING: accessors assocs sequences kernel combinators make math
math.order math.ranges system namespaces locals layouts words
alien alien.c-types literals cpu.architecture cpu.ppc.assembler
literals compiler.cfg.registers compiler.cfg.instructions
compiler.constants compiler.codegen compiler.codegen.fixup
compiler.cfg.intrinsics compiler.cfg.stack-frame ;
cpu.ppc.assembler.backend literals compiler.cfg.registers
compiler.cfg.instructions compiler.constants compiler.codegen
compiler.codegen.fixup compiler.cfg.intrinsics
compiler.cfg.stack-frame ;
IN: cpu.ppc
! PowerPC register assignments:
@ -116,7 +117,7 @@ M: ppc stack-frame-size ( stack-frame -- i )
M: ppc %call ( word -- ) 0 BL rc-relative-ppc-3 rel-word-pic ;
M: ppc %jump ( word -- )
0 3 LOAD32 rc-absolute-ppc-2/2 rel-here
0 6 LOAD32 8 rc-absolute-ppc-2/2 rel-here
0 B rc-relative-ppc-3 rel-word-pic-tail ;
M: ppc %jump-label ( label -- ) B ;
@ -130,7 +131,7 @@ M:: ppc %dispatch ( src temp offset -- )
BCTR ;
M: ppc %dispatch-label ( word -- )
0 , rc-absolute-cell rel-word ;
B{ 0 0 0 0 } % rc-absolute-cell rel-word ;
:: (%slot) ( obj slot tag temp -- reg offset )
temp slot obj ADD

4
vm/cpu-ppc.S
View File

@ -236,8 +236,10 @@ DEF(void,flush_icache,(void *start, int len)):
blr
DEF(void,primitive_inline_cache_miss,(void)):
mflr r3
mflr r6
DEF(void,primitive_inline_cache_miss_tail,(void)):
PROLOGUE
mr r3,r6
bl MANGLE(inline_cache_miss)
EPILOGUE
mtctr r3

31
vm/cpu-ppc.hpp
View File

@ -7,11 +7,22 @@ namespace factor
register cell ds asm("r13");
register cell rs asm("r14");
/* In the instruction sequence:
LOAD32 r3,...
B blah
the offset from the immediate operand to LOAD32 to the instruction after
the branch is two instructions. */
static const fixnum xt_tail_pic_offset = 4 * 2;
inline static void check_call_site(cell return_address)
{
#ifdef FACTOR_DEBUG
cell insn = *(cell *)return_address;
assert((insn & 0x3) == 0x1);
/* Check that absolute bit is 0 */
assert((insn & 0x2) == 0x0);
/* Check that instruction is branch */
assert((insn >> 26) == 0x12);
#endif
}
@ -21,8 +32,8 @@ inline static void check_call_site(cell return_address)
inline static void *get_call_target(cell return_address)
{
return_address -= sizeof(cell);
check_call_site(return_address);
cell insn = *(cell *)return_address;
cell unsigned_addr = (insn & B_MASK);
fixnum signed_addr = (fixnum)(unsigned_addr << 6) >> 6;
@ -32,19 +43,25 @@ inline static void *get_call_target(cell return_address)
inline static void set_call_target(cell return_address, void *target)
{
return_address -= sizeof(cell);
#ifdef FACTOR_DEBUG
assert((return_address & ~B_MASK) == 0);
check_call_site(return_address);
#endif
cell insn = *(cell *)return_address;
insn = ((insn & ~B_MASK) | (((cell)target - return_address) & B_MASK));
fixnum relative_address = ((cell)target - return_address);
insn = ((insn & ~B_MASK) | (relative_address & B_MASK));
*(cell *)return_address = insn;
/* Flush the cache line containing the call we just patched */
__asm__ __volatile__ ("icbi 0, %0\n" "sync\n"::"r" (return_address):);
}
inline static bool tail_call_site_p(cell return_address)
{
return_address -= sizeof(cell);
cell insn = *(cell *)return_address;
return (insn & 0x1) == 0;
}
/* Defined in assembly */
VM_ASM_API void c_to_factor(cell quot);
VM_ASM_API void throw_impl(cell quot, stack_frame *rewind);