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Add a check that the data area does not overrun the stack.

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* msp430/msp430-sim.ld (.stack): Add an assertion to make sure
	that the data area does not overrun the stack.  PROVIDE a new
	symbol __stack_size to allow the user to set the limit.
	* msp430/msp430xl-sim.ld (.stack): Likewise.
	* rl78/rl78-sim.ld (.stack): Likewise.
	* rl78/rl78.ld (.stack): Likewise.
	* rx/rx-sim.ld (.stack): Likewise.
	* rx/rx.ld (.stack): Likewise.
This commit is contained in:
Nick Clifton
2015-05-18 14:14:28 +01:00
committed by Corinna Vinschen
parent 7b3c1cffce
commit 324bd11706
7 changed files with 110 additions and 3 deletions
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18
libgloss/rx/rx-sim.ld
View File

@@ -155,10 +155,26 @@ SECTIONS
} > RAM
PROVIDE (__bsssize = SIZEOF(.bss) / 4);
/* The __stack_size value of 0x100 is just a guess, but since it is
PROVIDEd the user can override it on the command line. It has to be
set here, rather than inside the .stack section, as symbols defined
inside sections are only evaluated during the final phase of the link,
long after the ASSERT is checked. An ASSERT referencing a PROVIDED but
not yet evaluated symbol will automatically fail.
FIXME: It would be nice if this value could be automatically set via
gcc's -fstack-usage command line option somehow. */
PROVIDE (__stack_size = 0x100);
.stack (ORIGIN (STACK)) :
{
PROVIDE (__stack = .);
*(.stack)
/* Linker section checking ignores empty sections like
this one so we have to have our own test here. */
ASSERT ((__stack > (_end + __stack_size)),
"Error: Too much data - no room left for the stack");
} > STACK
/* Providing one of these symbols in your code is sufficient to have
@@ -213,7 +229,7 @@ SECTIONS
/* DWARF 2 */
.debug_info 0 : { *(.debug_info .gnu.linkonce.wi.*) }
.debug_abbrev 0 : { *(.debug_abbrev) }
.debug_line 0 : { *(.debug_line) }
.debug_line 0 : { *(.debug_line .debug_line.* .debug_line_end ) }
.debug_frame 0 : { *(.debug_frame) }
.debug_str 0 : { *(.debug_str) }
.debug_loc 0 : { *(.debug_loc) }

18
libgloss/rx/rx.ld
View File

@@ -159,10 +159,26 @@ SECTIONS
} > RAM
PROVIDE (__bsssize = SIZEOF(.bss) / 4);
/* The __stack_size value of 0x100 is just a guess, but since it is
PROVIDEd the user can override it on the command line. It has to be
set here, rather than inside the .stack section, as symbols defined
inside sections are only evaluated during the final phase of the link,
long after the ASSERT is checked. An ASSERT referencing a PROVIDED but
not yet evaluated symbol will automatically fail.
FIXME: It would be nice if this value could be automatically set via
gcc's -fstack-usage command line option somehow. */
PROVIDE (__stack_size = 0x100);
.stack (ORIGIN (STACK)) :
{
PROVIDE (__stack = .);
*(.stack)
/* Linker section checking ignores empty sections like
this one so we have to have our own test here. */
ASSERT ((__stack > (_end + __stack_size)),
"Error: Too much data - no room left for the stack");
}
/* Providing one of these symbols in your code is sufficient to have
@@ -217,7 +233,7 @@ SECTIONS
/* DWARF 2 */
.debug_info 0 : { *(.debug_info .gnu.linkonce.wi.*) }
.debug_abbrev 0 : { *(.debug_abbrev) }
.debug_line 0 : { *(.debug_line) }
.debug_line 0 : { *(.debug_line .debug_line.* .debug_line_end ) }
.debug_frame 0 : { *(.debug_frame) }
.debug_str 0 : { *(.debug_str) }
.debug_loc 0 : { *(.debug_loc) }