h8300.c (h8300_output_function_epilogue): Remove.
* config/h8300/h8300.c (h8300_output_function_epilogue): Remove. (h8300_saveall_function_p): New. (h8300_insert_attributes): Insert the saveall attribute if #pragma saveall is specified. (h8300_attribute_table): Add saveall. (TARGET_ASM_FUNCTION_EPILOGUE): Remove. * doc/extend.texi: Mention the saveall attribute. From-SVN: r72827
This commit is contained in:
Kazu Hirata
Kazu Hirata
parent
dc70e81d6e
commit
3cfa37023c
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@ -1,3 +1,13 @@
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2003-10-22 Kazu Hirata <kazu@cs.umass.edu>
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* config/h8300/h8300.c (h8300_output_function_epilogue): Remove.
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(h8300_saveall_function_p): New.
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(h8300_insert_attributes): Insert the saveall attribute if
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#pragma saveall is specified.
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(h8300_attribute_table): Add saveall.
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(TARGET_ASM_FUNCTION_EPILOGUE): Remove.
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* doc/extend.texi: Mention the saveall attribute.
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2003-10-22 Joseph S. Myers <jsm@polyomino.org.uk>
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* c-typeck.c (pedantic_lvalue_warning): Unconditionally warn of
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@ -49,6 +49,7 @@ Boston, MA 02111-1307, USA. */
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/* Forward declarations. */
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static const char *byte_reg (rtx, int);
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static int h8300_interrupt_function_p (tree);
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static int h8300_saveall_function_p (tree);
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static int h8300_monitor_function_p (tree);
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static int h8300_os_task_function_p (tree);
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static void dosize (int, unsigned int);
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@ -346,7 +347,7 @@ byte_reg (rtx x, int b)
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(regno < SP_REG \
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/* No need to save registers if this function will not return. */ \
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&& ! TREE_THIS_VOLATILE (current_function_decl) \
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&& (pragma_saveall \
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&& (h8300_saveall_function_p (current_function_decl) \
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/* Save any call saved register that was used. */ \
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|| (regs_ever_live[regno] && !call_used_regs[regno]) \
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/* Save the frame pointer if it was used. */ \
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@ -635,15 +636,6 @@ h8300_expand_epilogue (void)
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pop (FRAME_POINTER_REGNUM);
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}
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/* Output assembly language code for the function epilogue. */
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static void
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h8300_output_function_epilogue (FILE *file ATTRIBUTE_UNUSED,
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HOST_WIDE_INT size ATTRIBUTE_UNUSED)
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{
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pragma_saveall = 0;
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}
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/* Return nonzero if the current function is an interrupt
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function. */
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@ -4101,6 +4093,21 @@ h8300_interrupt_function_p (tree func)
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return a != NULL_TREE;
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}
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/* Return nonzero if FUNC is a saveall function as specified by the
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"saveall" attribute. */
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static int
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h8300_saveall_function_p (tree func)
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{
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tree a;
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if (TREE_CODE (func) != FUNCTION_DECL)
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return 0;
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a = lookup_attribute ("saveall", DECL_ATTRIBUTES (func));
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return a != NULL_TREE;
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}
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/* Return nonzero if FUNC is an OS_Task function as specified
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by the "OS_Task" attribute. */
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@ -4176,20 +4183,32 @@ h8300_tiny_data_p (tree decl)
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return a != NULL_TREE;
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}
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/* Generate an 'interrupt_handler' attribute for decls. */
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/* Generate an 'interrupt_handler' attribute for decls. We convert
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all the pragmas to corresponding attributes. */
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static void
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h8300_insert_attributes (tree node, tree *attributes)
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{
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if (!pragma_interrupt
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|| TREE_CODE (node) != FUNCTION_DECL)
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return;
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if (TREE_CODE (node) == FUNCTION_DECL)
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{
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if (pragma_interrupt)
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{
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pragma_interrupt = 0;
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pragma_interrupt = 0;
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/* Add an 'interrupt_handler' attribute. */
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*attributes = tree_cons (get_identifier ("interrupt_handler"),
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NULL, *attributes);
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}
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/* Add an 'interrupt_handler' attribute. */
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*attributes = tree_cons (get_identifier ("interrupt_handler"),
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NULL, *attributes);
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if (pragma_saveall)
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{
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pragma_saveall = 0;
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/* Add an 'saveall' attribute. */
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*attributes = tree_cons (get_identifier ("saveall"),
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NULL, *attributes);
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}
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}
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}
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/* Supported attributes:
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@ -4197,6 +4216,9 @@ h8300_insert_attributes (tree node, tree *attributes)
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interrupt_handler: output a prologue and epilogue suitable for an
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interrupt handler.
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saveall: output a prologue and epilogue that saves and restores
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all registers except the stack pointer.
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function_vector: This function should be called through the
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function vector.
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@ -4210,6 +4232,7 @@ const struct attribute_spec h8300_attribute_table[] =
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{
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/* { name, min_len, max_len, decl_req, type_req, fn_type_req, handler } */
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{ "interrupt_handler", 0, 0, true, false, false, h8300_handle_fndecl_attribute },
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{ "saveall", 0, 0, true, false, false, h8300_handle_fndecl_attribute },
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{ "OS_Task", 0, 0, true, false, false, h8300_handle_fndecl_attribute },
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{ "monitor", 0, 0, true, false, false, h8300_handle_fndecl_attribute },
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{ "function_vector", 0, 0, true, false, false, h8300_handle_fndecl_attribute },
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@ -4526,9 +4549,6 @@ h8300_init_libfuncs (void)
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#undef TARGET_ASM_ALIGNED_HI_OP
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#define TARGET_ASM_ALIGNED_HI_OP "\t.word\t"
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#undef TARGET_ASM_FUNCTION_EPILOGUE
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#define TARGET_ASM_FUNCTION_EPILOGUE h8300_output_function_epilogue
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#undef TARGET_ASM_FILE_START
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#define TARGET_ASM_FILE_START h8300_file_start
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#undef TARGET_ASM_FILE_START_FILE_DIRECTIVE
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@ -2550,6 +2550,12 @@ The compiler will generate more efficient code for loads and stores
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on data in the tiny data section. Note the tiny data area is limited to
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slightly under 32kbytes of data.
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@item saveall
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@cindex save all registers on the H8/300, H8/300H, and H8S
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Use this attribute on the H8/300, H8/300H, and H8S to indicate that
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all registers except the stack pointer should be saved in the prologue
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regardless of whether they are used or not.
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@item signal
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@cindex signal handler functions on the AVR processors
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Use this attribute on the AVR to indicate that the specified
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