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On Mon, Aug 30, 2004 at 11:33:10AM -0700, H. J. Lu wrote: > On Thu, Aug 26, 2004 at 02:11:55PM -0400, DJ Delorie wrote: > > > > > 3.1. SORT_BY_NAME (SORT_BY_ALIGNMENT (wildcard section pattern)). It > > > will sort the input sections by alignment first, then by name if 2 > > > sections have the same alignment. > > > > I think the semantics here need to be reversed. If this were a real > > programming language, the SORT_BY_NAME would happen last, and override > > any previous (inner) sorting. > > > > Thus, these would be equivalent: > > > > SORT_BY_NAME (SORT_BY_ALIGNMENT (*.text)) > > > > SORT_BY_NAME (*.text) with -sort-sections=alignment > > Here is the updated proposal. Any other comments? > > > H.J. > ---- > New input section sorting options in linker > > 1. New linker script section sorting commands. > > 1.1. Rename SORT to SORT_BY_NAME and make SORT an alias of > SORT_BY_NAME. > 1.2. Add SORT_BY_ALIGNMENT, which appears before a wildcard pattern in > parentheses (.e.g. `SORT_BY_ALIGNMENT (.text*).). It will sort sections > into ascending order by alignment before placing them into the output > file. > > 2. New linker command line option. > > 2.1. .sort-section name. It will apply SORT_BY_NAME to all wildcard > section patterns in the linker script. > 2.2. .sort-section alignment. It will apply SORT_BY_ALIGMENT to all > wildcard section patterns in the linker script. > > 3. Nesting of section sorting commands in linker script. There can be > at most 1 level of nesting for section sorting commands. > > 3.1. SORT_BY_NAME (SORT_BY_ALIGNMENT (wildcard section pattern)). It > will sort the input sections by name first, then by alignment if 2 > sections have the same name. > 3.2. SORT_BY_ALIGNMENT (SORT_BY_NAME (wildcard section pattern)). It > will sort the input sections by alignment first, then by name if 2 > sections have the same alignment. > 3.3. SORT_BY_NAME (SORT_BY_NAME (wildcard section pattern)) is treated > the same as SORT_BY_NAME (wildcard section pattern). > 3.4. SORT_BY_ALIGNMENT (SORT_BY_ALIGMENT (wildcard section pattern)) is > treated the same as SORT_BY_ALIGMENT (wildcard section pattern). > 3.5. All other nested section sorting commands are invalid. > > 4. .sort-section command line option vs. section sorting command in > linker script. > > 4.1. Section sorting commands always take precedent over the command > line option. > 4.2. If the section sorting command in linker script isn.t nested, the > command line option will make the section sorting command to be treated > as nested sorting command. > 4.2.1. SORT_BY_NAME (wildcard section pattern ) with --sort-sections > alignment is equivalent to SORT_BY_NAME (SORT_BY_ALIGNMENT (wildcard > section pattern)). > 4.2.2. SORT_BY_ALIGNMENT (wildcard section pattern) with .sort-section > name is equivalent to SORT_BY_ALIGNMENT (SORT_BY_NAME (wildcard section > pattern)). > 4.3. If the section sorting command in linker script is nested, the > command line option will be ignored. > This patch implements --sort-section. I will update the ld doc if this patch is OK. H.J.
Attachment:
ld-sort-1.patch
Description: Text document
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