[LINKER] Add single underscore to all definitions, no -D for dashed param.
This makes possibility for the script to append the definitions to CFLAGS and LDFLAGS, and with the feature of disabling of -D prependation it will make possible to generate ARCH_FLAGS generic to each specific chip.
This commit is contained in:
BuFran
Piotr Esden-Tempski
parent
ea589b9a4e
commit
d15a0e63fe
10
ld/README
10
ld/README
@ -90,7 +90,10 @@ Line description:
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"+" - Don't change the parent. Use for split long line to two.
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<data>: space-separated list of preprocessor symbols supplied to the linker.
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-D option name is automatically prepended to each symbol definition
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-D option name with single underscore is automatically prepended to each
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symbol definition
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if the symbol starts with dash "-", it is interpreted as parameter to
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linker, and no -D or underscore is generated.
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All lines starting with # symbol are treated as Comments
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@ -118,14 +121,15 @@ Example:
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--- devices.data file ---
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stm32f05[01]?4* stm32f0 ROM=16K RAM=4K
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stm32f0 stm32 ROM_OFF=0x08000000 RAM_OFF=0x20000000
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stm32f0 stm32 ROM_OFF=0x08000000 RAM_OFF=0x20000000 -mcpu=cortex-m0 -mthumb
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stm32 END
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--- queried chip name ---
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stm32f051c4t6
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--- output of the awk script ---
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-DROM=16K -DRAM=4K -DROM_OFF=0x08000000 -DRAM_OFF=0x20000000
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-D_ROM=16K -D_RAM=4K -D_ROM_OFF=0x08000000 -D_RAM_OFF=0x20000000 \
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-mcpu=cortex-m0 -mthumb
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The generated linker script file will contain sections rom and ram with
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appropriate initialization code, specified in linker file source linker.ld.S
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@ -30,31 +30,34 @@ ENTRY(reset_handler)
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MEMORY
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{
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/* RAM is always used */
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ram (rwx) : ORIGIN = RAM_OFF, LENGTH = RAM
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ram (rwx) : ORIGIN = _RAM_OFF, LENGTH = _RAM
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#if defined(ROM)
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rom (rx) : ORIGIN = ROM_OFF, LENGTH = ROM
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#if defined(_ROM)
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rom (rx) : ORIGIN = _ROM_OFF, LENGTH = _ROM
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#endif
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#if defined(ROM2)
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rom2 (rx) : ORIGIN = ROM2_OFF, LENGTH = ROM2
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#if defined(_ROM1)
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rom1 (rx) : ORIGIN = _ROM1_OFF, LENGTH = _ROM1
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#endif
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#if defined(RAM1)
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ram1 (rwx) : ORIGIN = RAM1_OFF, LENGTH = RAM1
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#if defined(_ROM2)
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rom2 (rx) : ORIGIN = _ROM2_OFF, LENGTH = _ROM2
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#endif
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#if defined(RAM2)
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ram2 (rwx) : ORIGIN = RAM2_OFF, LENGTH = RAM2
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#if defined(_RAM1)
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ram1 (rwx) : ORIGIN = _RAM1_OFF, LENGTH = _RAM1
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#endif
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#if defined(CCM)
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ccm (rwx) : ORIGIN = CCM_OFF, LENGTH = CCM
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#if defined(_RAM2)
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ram2 (rwx) : ORIGIN = _RAM2_OFF, LENGTH = _RAM2
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#endif
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#if defined(EEP)
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eep (r) : ORIGIN = EEP_OFF, LENGTH = EEP
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#if defined(_CCM)
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ccm (rwx) : ORIGIN = _CCM_OFF, LENGTH = _CCM
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#endif
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#if defined(XSRAM)
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xsram (rw) : ORIGIN = XSRAM_OFF, LENGTH = XSRAM
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#if defined(_EEP)
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eep (r) : ORIGIN = _EEP_OFF, LENGTH = _EEP
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#endif
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#if defined(XDRAM)
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xdram (rw) : ORIGIN = XDRAM_OFF, LENGTH = XDRAM
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#if defined(_XSRAM)
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xsram (rw) : ORIGIN = _XSRAM_OFF, LENGTH = _XSRAM
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#endif
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#if defined(_XDRAM)
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xdram (rw) : ORIGIN = _XDRAM_OFF, LENGTH = _XDRAM
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#endif
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}
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@ -124,42 +127,42 @@ SECTIONS
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_ebss = .;
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} >ram
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#if defined(EEP)
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#if defined(_EEP)
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.eep : {
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*(.eeprom*)
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. = ALIGN(4);
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} >eep
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#endif
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#if defined(CCM)
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#if defined(_CCM)
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.ccm : {
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*(.ccmram*)
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. = ALIGN(4);
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} >ccm
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#endif
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#if defined(RAM1)
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#if defined(_RAM1)
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.ram1 : {
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*(.ram1*)
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. = ALIGN(4);
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} >ram1
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#endif
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#if defined(RAM2)
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#if defined(_RAM2)
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.ram2 : {
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*(.ram2*)
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. = ALIGN(4);
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} >ram2
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#endif
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#if defined(XSRAM)
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#if defined(_XSRAM)
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.xsram : {
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*(.xsram*)
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. = ALIGN(4);
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} >xsram
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#endif
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#if defined(XDRAM)
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#if defined(_XDRAM)
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.xdram : {
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*(.xdram*)
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. = ALIGN(4);
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1
ld/tests/dash.data
Normal file
1
ld/tests/dash.data
Normal file
@ -0,0 +1 @@
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dash END A B C D -mcpu=cortex-m0
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1
ld/tests/dash.result
Normal file
1
ld/tests/dash.result
Normal file
@ -0,0 +1 @@
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-D_A -D_B -D_C -D_D -mcpu=cortex-m0
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@ -1 +1 @@
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-DA=parameter -DB=parameter -DC=parameter -DD=parameter -DE==parameter -DF=parameter -DG=parameter
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-D_A=parameter -D_B=parameter -D_C=parameter -D_D=parameter -D_E==parameter -D_F=parameter -D_G=parameter
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@ -1 +1 @@
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-DA -DB -DC -DD
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-D_A -D_B -D_C -D_D
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@ -1 +1 @@
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-DA -DB -DC -DD -DE -DF
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-D_A -D_B -D_C -D_D -D_E -D_F
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@ -1 +1 @@
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-DA -DB -DC -DD -DE -DF
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-D_A -D_B -D_C -D_D -D_E -D_F
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@ -1 +1 @@
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-DA -DB -DC -DD -DE -DF
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-D_A -D_B -D_C -D_D -D_E -D_F
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@ -38,8 +38,12 @@ BEGIN {
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if ($2 != "+")
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PAT=$2;
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for (i = 3; i <= NF; i = i + 1)
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printf "-D%s ",$i;
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for (i = 3; i <= NF; i = i + 1) {
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if ($i ~ /^-/)
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printf "%s ",$i;
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else
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printf "-D_%s ",$i;
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}
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if (PAT=="END")
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exit;
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