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add compat tests for relative jumps with immediate offset from absolute symbol

Values assigned to symbols using .set should be specified in words (notbytes). Thus, this test ensures that the value of the const symbol is notconverted to words (divided by 4).Since py-esp32-ulp internally tracks symbol values as words anyway, thisbehaviour has been correct all along. The test aims to show that recentchanges related to immediate value handling did not break this (and toguard against future changes that could break this).

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tests/compat
- jumps.S

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`‎tests/compat/jumps.S‎`

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Original file line number	Diff line number	Diff line change
`@@ -1,4 +1,6 @@`
`1`	`1`	`.text`
	`2`	`+.set const,3`
	`3`	`+.global const# exporting symbol is required for binutils, not important for py-esp32-ulp`
`2`	`4`
`3`	`5`	`entry:`
`4`	`6`	`nop`
`@@ -27,6 +29,9 @@ entry:`
`27`	`29`	`jumps-8,42, lt`
`28`	`30`	`jumps-32,42, lt`
`29`	`31`
	`32`	`+# jumps with immediate offset from absolute symbol`
	`33`	`+ jumps const,42, lt`
	`34`	`+`
`30`	`35`	`# jumpr with labels`
`31`	`36`	`jumpr entry,42, lt`
`32`	`37`	`jumpr later,42, lt`
`@@ -50,6 +55,9 @@ entry:`
`50`	`55`	`jumpr-8,42, lt`
`51`	`56`	`jumpr-32,42, lt`
`52`	`57`
	`58`	`+# jumps with immediate offset from absolute symbol`
	`59`	`+ jumpr const,42, lt`
	`60`	`+`
`53`	`61`	`nop`
`54`	`62`	`nop`
`55`	`63`	`nop`

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Commitc29b7a2

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`‎tests/compat/jumps.S‎`

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