diff options
Diffstat (limited to 'gcc/expr.h')
| -rw-r--r-- | gcc/expr.h | 32 |
1 files changed, 21 insertions, 11 deletions
diff --git a/gcc/expr.h b/gcc/expr.h index 4e02c24b75f..e84779639b5 100644 --- a/gcc/expr.h +++ b/gcc/expr.h @@ -218,9 +218,9 @@ do { \ #define STACK_CHECK_STATIC_BUILTIN 0 #endif -/* The default interval is one page. */ -#ifndef STACK_CHECK_PROBE_INTERVAL -#define STACK_CHECK_PROBE_INTERVAL 4096 +/* The default interval is one page (4096 bytes). */ +#ifndef STACK_CHECK_PROBE_INTERVAL_EXP +#define STACK_CHECK_PROBE_INTERVAL_EXP 12 #endif /* The default is to do a store into the stack. */ @@ -228,6 +228,11 @@ do { \ #define STACK_CHECK_PROBE_LOAD 0 #endif +/* The default is not to move the stack pointer. */ +#ifndef STACK_CHECK_MOVING_SP +#define STACK_CHECK_MOVING_SP 0 +#endif + /* This is a kludge to try to capture the discrepancy between the old mechanism (generic stack checking) and the new mechanism (static builtin stack checking). STACK_CHECK_PROTECT needs to be bumped @@ -252,7 +257,7 @@ do { \ one probe per function. */ #ifndef STACK_CHECK_MAX_FRAME_SIZE #define STACK_CHECK_MAX_FRAME_SIZE \ - (STACK_CHECK_PROBE_INTERVAL - UNITS_PER_WORD) + ((1 << STACK_CHECK_PROBE_INTERVAL_EXP) - UNITS_PER_WORD) #endif /* This is arbitrary, but should be large enough everywhere. */ @@ -650,9 +655,15 @@ extern rtx force_label_rtx (tree); The constant terms are added and stored via a second arg. */ extern rtx eliminate_constant_term (rtx, rtx *); -/* Convert arg to a valid memory address for specified machine mode, - by emitting insns to perform arithmetic if nec. */ -extern rtx memory_address (enum machine_mode, rtx); +/* Convert arg to a valid memory address for specified machine mode that points + to a specific named address space, by emitting insns to perform arithmetic + if necessary. */ +extern rtx memory_address_addr_space (enum machine_mode, rtx, addr_space_t); + +/* Like memory_address_addr_space, except assume the memory address points to + the generic named address space. */ +#define memory_address(MODE,RTX) \ + memory_address_addr_space ((MODE), (RTX), ADDR_SPACE_GENERIC) /* Return a memory reference like MEMREF, but with its mode changed to MODE and its address changed to ADDR. @@ -773,10 +784,9 @@ extern void update_nonlocal_goto_save_area (void); extern rtx allocate_dynamic_stack_space (rtx, rtx, int); /* Probe a range of stack addresses from FIRST to FIRST+SIZE, inclusive. - FIRST is a constant and size is a Pmode RTX. These are offsets from the - current stack pointer. STACK_GROWS_DOWNWARD says whether to add or - subtract from the stack. If SIZE is constant, this is done - with a fixed number of probes. Otherwise, we must make a loop. */ + FIRST is a constant and size is a Pmode RTX. These are offsets from + the current stack pointer. STACK_GROWS_DOWNWARD says whether to add + or subtract them from the stack pointer. */ extern void probe_stack_range (HOST_WIDE_INT, rtx); /* Return an rtx that refers to the value returned by a library call |