FreeCalypso > hg > freecalypso-reveng
annotate leo-obj/README @ 347:21d38dce4d15
fluid-mnf: removed silly wait for RETURN from no-arguments display
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Fri, 13 Mar 2020 06:27:15 +0000 |
parents | 006d6de4ec6b |
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rev | line source |
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130
87b82398a08b
leo-obj project subtree started, tiobjd tool moved into it
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
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1 TI's TCS211 aka Leonardo firmware is a mixture of C sources and linkable object |
87b82398a08b
leo-obj project subtree started, tiobjd tool moved into it
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
2 modules (packaged into archive libraries) in the COFF format used by TI's TMS470 |
87b82398a08b
leo-obj project subtree started, tiobjd tool moved into it
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
3 compiler toolchain. One of the goals of the FreeCalypso project is to transform |
87b82398a08b
leo-obj project subtree started, tiobjd tool moved into it
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
4 this firmware into full C source by analyzing the COFF object blobs with a tool |
87b82398a08b
leo-obj project subtree started, tiobjd tool moved into it
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
5 that groks the symbolic information present therein, then replacing each blob |
87b82398a08b
leo-obj project subtree started, tiobjd tool moved into it
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
6 either with a matching source piece from another TI firmware leak (e.g., the one |
87b82398a08b
leo-obj project subtree started, tiobjd tool moved into it
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
7 in ftp.ifctf.org:/pub/GSM/LoCosto) or with newly written C code that exports |
87b82398a08b
leo-obj project subtree started, tiobjd tool moved into it
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
8 the same functions and global variables etc, with logic inside matching the |
87b82398a08b
leo-obj project subtree started, tiobjd tool moved into it
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
9 disassembly of the original. |
87b82398a08b
leo-obj project subtree started, tiobjd tool moved into it
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff
changeset
|
10 |
140
21fda9752bd9
OSL flash objects: created disasm hints for os_com through os_mis
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
130
diff
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11 The present directory tree holds the just-described project - running 'make' |
21fda9752bd9
OSL flash objects: created disasm hints for os_com through os_mis
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
130
diff
changeset
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12 here will first build the tiobjd tool, then run this tool on a bunch of TI's |
21fda9752bd9
OSL flash objects: created disasm hints for os_com through os_mis
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
130
diff
changeset
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13 objects, applying some hand-added disassembly hints in many cases. |
21fda9752bd9
OSL flash objects: created disasm hints for os_com through os_mis
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
130
diff
changeset
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14 |
21fda9752bd9
OSL flash objects: created disasm hints for os_com through os_mis
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
130
diff
changeset
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15 It is noteworthy that there are two kinds of COFF object blobs present in the |
21fda9752bd9
OSL flash objects: created disasm hints for os_com through os_mis
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
130
diff
changeset
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16 TCS211 semi-src, with respect to the amount of symbolic information present |
21fda9752bd9
OSL flash objects: created disasm hints for os_com through os_mis
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
130
diff
changeset
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17 therein. The objects contained in the binary libraries under |
21fda9752bd9
OSL flash objects: created disasm hints for os_com through os_mis
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
130
diff
changeset
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18 g23m/__out__/gsm_<blah>/lib have just the minimal amount of symbolic info |
21fda9752bd9
OSL flash objects: created disasm hints for os_com through os_mis
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
130
diff
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19 needed in order for these objects to be relocatable and linkable, whereas the |
21fda9752bd9
OSL flash objects: created disasm hints for os_com through os_mis
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
130
diff
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20 objects in the GPF libraries under gpf/LIB exhibit much richer "-g"-style |
165
006d6de4ec6b
leo-obj: starting to look at OSX
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
140
diff
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21 symbolic information. Our tiobjd tool makes use of whatever symbolic info is |
006d6de4ec6b
leo-obj: starting to look at OSX
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
140
diff
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22 present. |